JP3882889B2 - Motor control apparatus and recording apparatus provided with the motor control apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a motor control in a recording apparatus such as a printer or a facsimile, and more particularly to a paper feed motor control apparatus.
[0002]
[Prior art]
For example, in an ink jet printer, a step motor or a DC motor is used as a motor for driving a paper feed roller carriage for feeding recording paper toward a recording area. The stepping motor has a constant deceleration distance. However, since the characteristics of a DC motor vary with changes in temperature and load, the deceleration distance and the like vary from time to time. Therefore, in a printer using a DC motor as a drive source, the characteristic determined by the combination with the drive target is measured, and the characteristic value is updated to the latest by repeating the measurement at a predetermined timing. High-precision drive control is realized by controlling the motor based on the value. (Patent No. 3053144 patent publication).
[0003]
[Problems to be solved by the invention]
However, when the recording apparatus has an optional unit such as a cutter unit mainly used for printing on roll paper, for example, and this optional unit has a discharge driving roller using the motor as a common power source, the following problems occur. There was a point. That is, in addition to the standard unit such as the paper feed roller, the characteristic value C in the option addition state where the optional unit is mounted and the characteristic value A in the standard state only in the standard unit where the optional unit is not mounted are measured and updated. There was a problem that it was difficult to update the values appropriately.
[0004]
The reason is that in the conventional motor control device, the option unit is installed on the user side, and the frequency of use in the standard state and in the option addition state is not constant by the user. It is in. That is, since the characteristic value C in the option addition state is influenced by the fluctuation of the characteristic value A in the standard state, if the motor control based on the characteristic value A in the standard state continues for a long time, the characteristic value C is It ’s going to shift. Thereafter, when changing to motor control based on the characteristic value C in the option addition state, for example, when the user has taken a procedure in which the characteristic value C is not measured and updated as an initial operation, the value is greatly increased from the optimum value. The motor control is executed by the shifted characteristic value C, and there is a problem that high-precision drive control cannot be realized.
[0005]
An object of the present invention is to provide an optional addition state in which an optional unit is mounted on the recording apparatus without being affected by fluctuation factors on the user side, such as a difference in the usage frequency of the optional unit of the user, in the recording apparatus having such an optional unit. And a motor control device in which measurement and update to the latest value of the characteristic value A in the standard state of only the standard unit in which the optional unit is not installed and the latest value are performed more appropriately than before are provided. It is to provide a recording apparatus.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a motor control device according to the first aspect of the present invention includes a motor as a power source, a standard unit that is a drive system driven by the motor,
Motor characteristic measuring means for measuring the characteristics of the motor, a memory for storing the characteristics measured by the motor characteristic measuring means, and a motor control arithmetic unit for controlling the motor based on the characteristics stored in the memory, A motor control device in a recording apparatus having a detachable option unit as a drive system driven by the motor, wherein the memory stores the characteristics of the motor in a standard state in which only the standard unit is driven And a second storage unit that stores the characteristics of the motor when the option unit is installed in an option addition state, and the second storage unit stores the characteristics. As the characteristic value, an offset value B, which is a value obtained by subtracting the characteristic value A in the standard state from the characteristic value C in the option addition state, is configured to be stored. The motor characteristic measuring means is configured to update the characteristic value A and the offset value B stored in the memory according to the latest measured characteristic values A and C as needed, and the motor control calculation unit is in an option addition state. In the case of controlling the motor based on the characteristic value C obtained by adding the offset value B stored in the memory to the characteristic value A in the standard state. In the standard state, the motor is controlled based on the characteristic value A. It is comprised so that it may control.
[0007]
According to the present invention, the memory stores a first storage unit that stores the characteristics of the motor in a standard state, and a second storage unit that stores the characteristics of the motor in an optional addition state in which the option unit is mounted. And an offset value B, which is a value obtained by subtracting the characteristic value A in the standard state from the characteristic value C in the option addition state, as the characteristic value stored in the second storage unit. Further, the motor characteristic measuring means is configured to update the characteristic value A and the offset value B stored in the memory according to the latest measured characteristic values A and C as needed. . That is, since the offset value B is introduced, for example, even when the characteristic value A fluctuates greatly and the characteristic value C is not measured because the use of the standard state continues for a long time, the characteristic value A is measured and updated. Based on the above, the offset value B is updated by CA (update value) = B.
[0008]
The motor control calculation unit controls the motor based on the characteristic value C obtained by adding the offset value B stored in the memory to the characteristic value A in the standard state when the option is added. Since it is configured, even when the characteristic value C is not measured, the characteristic value C approaches the optimum value. Therefore, the characteristic value C in the option addition state and the characteristic value A in the standard state of only the standard unit are appropriately measured and updated to the latest value, and thus the fluctuation factor of the usage on the user side. High-precision drive control (fast and accurate) by the motor can be realized without being influenced by the motor.
[0009]
Further, the invention according to claim 2 of the present application includes a motor as a power source, a standard unit which is a drive system driven by the motor, motor characteristic measuring means for measuring the characteristics of the motor, and the motor characteristic measurement. A detachable option unit as a drive system driven by the motor, comprising: a memory for storing characteristics measured by the means; and a motor control arithmetic unit for controlling the motor based on the characteristics stored in the memory. The memory control apparatus includes a first storage unit that stores a characteristic value A of the motor in a standard state in which only the standard unit is driven, and an optional addition in which the optional unit is mounted. A second storage unit for storing the motor characteristic value C in the state, wherein the motor characteristic measuring means performs the previous measurement according to the latest measured characteristic values A and C. The characteristic values A and C stored in the memory are updated as needed, and when the characteristic value A is updated, an increase / decrease value ΔA of a change amount of the value accompanying the update is added to the stored characteristic value C. The motor control calculation unit is configured to update the characteristic value C, and controls the motor based on the characteristic value C stored in the memory when the option is added, and the characteristic value when the standard state is set. The motor is configured to be controlled based on A.
[0010]
According to the present invention, the memory includes a first storage unit that stores a motor characteristic value A in a standard state, and a second storage unit that stores a motor characteristic value C in an option addition state, The motor characteristic measuring means updates the characteristic values A and C stored in the memory according to the latest measured characteristic values A and C as needed, and when the characteristic value A is updated, the change in the value accompanying the update. An increase / decrease value ΔA of the amount is added to the stored characteristic value C to update the characteristic value C, and the motor control operation unit stores the characteristic stored in the memory when the option is added The gist is to control the motor based on the value C. In particular, when the characteristic value A is updated, the characteristic value C is updated by adding the increase / decrease value ΔA of the change amount of the value accompanying the update to the stored characteristic value C.
[0011]
According to the present invention, the calculation method for updating the characteristic value is changed by introducing the “increase / decrease value ΔA”, but the same effect as the effect by introducing the “offset value B” of claim 1 is achieved. An effect is obtained.
[0012]
According to a third aspect of the present invention, in the motor control device according to the first or second aspect, the standard unit is a drive system having a paper feed roller for conveying a recording material toward a recording area as a main part. The optional unit is a cutter unit that is detachably mounted in the vicinity of the downstream side of the recording area, and the cutter unit includes a discharge driving roller for discharging the cut recording material to the outside of the apparatus. And the discharge drive roller is driven by using the motor as a power source.
[0013]
According to the present invention, the optional unit is a cutter unit that is detachably mounted in the vicinity of the downstream side of the recording area, and the cutter unit discharges the recording material that has been cut and separated out of the apparatus. The effect is remarkable when it is applied to a recording apparatus having a drive roller, and the discharge drive roller is driven by the motor as a power source.
[0014]
Further, the invention according to claim 4 of the present application is the recording apparatus according to claim 3, wherein the recording apparatus is configured to be able to convey and record using roll paper as a recording material, and the motor characteristic measuring means is configured to record on the roll paper. The characteristic value C is measured when the roll paper is used up.
[0015]
When recording (printing) on roll paper, when printing on the roll paper is finished, the roll paper tip is not completely rewound, but in the transport path upstream of the recording area of the recording device (with a paper feed roller). There are some which make it wait in the state where it is fed to the nip position). The reason is that, when resuming printing on the next roll paper, the initial feeding operation is omitted and the throughput is improved. In the recording apparatus having such a configuration, when the motor characteristic value is measured in a state where the leading edge of the roll paper is fed into the conveyance path, the roll paper is unnecessarily sent along with the measurement. Therefore, there is a problem of damaging the paper or generating waste.
[0016]
According to the present invention, the motor characteristic measuring means is configured to execute the measurement of the characteristic value C when the roll paper is used up when recording on the roll paper. Can be.
[0017]
A recording apparatus according to a fifth aspect of the present invention includes the motor control apparatus according to any one of the first to fourth aspects. Thereby, the effect of each invention is obtained as a recording apparatus.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing an embodiment of a motor control device mounted on an ink jet printer according to the present invention, FIG. 2 is a flowchart for explaining characteristic value measurement processing by a motor characteristic measurement means, and FIG. It is a flowchart explaining the motor drive control processing by a control calculating part.
is there.
[0019]
As shown in FIG. 1, the printer includes a DC motor 5 as a power source, a standard unit 6 that is a drive system driven by the DC motor 5, and a motor characteristic measuring unit that measures the characteristics of the motor 5. 1, a memory 3 that stores characteristics measured by the motor characteristic measuring unit 1, and a motor control calculation unit 2 that controls the motor 5 based on the characteristics stored in the memory 3. The motor characteristic measurement unit 1 includes a detection unit necessary for measurement and a calculation unit that executes predetermined calculation on the detection data. However, since a specific configuration and operation thereof can be used, a description thereof will be given. Is omitted.
[0020]
This printer has a detachable option unit 7 as a drive system driven by the DC motor 5. The standard unit 6 is a drive system mainly composed of a paper feed roller (not shown) for transporting a recording material toward a recording area, and the optional unit 7 is attached and detached near the downstream side of the recording area. A cutter unit (not shown) that is freely mounted. The cutter unit includes a discharge drive roller (not shown) for discharging the cut and separated recording material to the outside of the apparatus. The motor 5 is driven as a power source.
[0021]
The memory 3 stores the characteristics of the motor 5 in a standard state in which only the standard unit 6 is driven, and the motor 5 in an option addition state in which the option unit 7 is mounted. A second storage unit 3b for storing characteristics. In the present embodiment, the second storage unit 3b stores an offset value B, which is a value obtained by subtracting the characteristic value A in the standard state from the characteristic value C in the option addition state, as the characteristic value stored therein. It is configured as follows.
[0022]
The motor characteristic measuring unit 1 is configured to update the characteristic value A and the offset value B stored in the memory 3 according to the latest measured characteristic values A and C as needed.
[0023]
The motor control calculation unit 2 controls the motor 5 based on the characteristic value C obtained by adding the offset value B stored in the memory 3 to the characteristic value A in the standard state when the option is added. In the standard state, the motor 5 is controlled based on the characteristic value A. In the present embodiment, a detection signal is sent to the motor control calculation unit 2 from the detector 8 that detects that the printer is turned on, and various data necessary for execution of recording are received from the host computer 9. It is supposed to be sent.
[0024]
Further, the printer is configured to be able to transport and record a roll paper (not shown) as a recording material, and the motor characteristic measurement unit 1 measures the characteristic value C when recording on the roll paper. It is configured to execute when the paper is used up.
[0025]
Next, the operation will be described with reference to FIGS. In the above embodiment, upon receiving a detection signal from the power supply detector 8 (step S1), motor characteristic measurement by the motor measurement unit 1 is started (step S2).
[0026]
As shown in step S3, step S4 and step S5, the memory 3 stores, as the characteristic value stored in the second storage unit 3b, the characteristic value C from the option addition state to the characteristic value in the standard state. An offset value B, which is a value obtained by subtracting A, is configured to be stored, and the motor characteristic measurement unit 1 further includes a characteristic value A and a characteristic value A stored in the memory 3 according to the latest measured characteristic values A and C. The offset value B is configured to be updated as needed.
[0027]
That is, since the offset value B is introduced, for example, even when the characteristic value A fluctuates greatly and the characteristic value C is not measured because the use of the standard state continues for a long time, the characteristic value A is measured and updated. Based on the above, the offset value B is updated by CA (update value) = B.
[0028]
Then, as shown in step S11, step S12, step S13, step S14 and step S15, the motor control calculation unit 2 sets the offset value B stored in the memory 3 in the standard state when the option is added. Since the motor 5 is controlled based on the characteristic value C obtained by adding to the characteristic value A, the characteristic value C approaches an optimum value even when the characteristic value C is not measured. ing. Therefore, the characteristic value C in the option addition state and the characteristic value A in the standard state of only the standard unit 6 are appropriately measured and updated to the latest value, so that fluctuations in usage on the user side are achieved. Highly accurate drive control (fast and accurate) by the motor 5 can be realized without being influenced by factors.
[0029]
Next, FIG. 4 is a block diagram showing another embodiment of the motor control device mounted on the ink jet printer according to the present invention, and FIG. 2 is a flowchart for explaining the characteristic value measuring process by the motor characteristic measuring means, FIG. 3 is a flowchart for explaining motor drive control processing by the motor control calculation unit.
is there.
[0030]
As shown in FIG. 4, this printer is different from the previous embodiment in the following points. The memory 30 includes a first storage unit 30a for storing the motor characteristic value A in the standard state and a second storage unit 30b for storing the motor characteristic value C in the option addition state. The motor characteristic measuring unit 1 updates the characteristic values A and C stored in the memory 30 according to the latest measured characteristic values A and C as needed (steps S1, S2, S3, S5, and S40 in FIG. 5). When the characteristic value A is updated, the characteristic value C is updated by adding the increase / decrease value ΔA of the change amount of the value accompanying the update to the stored characteristic value C. (Step S41) As shown in Steps S12, S13, and S14 of FIG. 6, the motor control calculation unit 2 determines the motor 5 based on the characteristic value C stored in the memory 30 when the option is added. To control. In particular, when the characteristic value A is updated, the characteristic value C is updated by adding the increase / decrease value ΔA of the change amount of the value accompanying the update to the stored characteristic value C.
[0031]
According to the present embodiment, the calculation method for updating the characteristic value is changed by introducing the “increase / decrease value ΔA”, but the same operation and effect as the previous “offset value B” are introduced. An effect is obtained.
[0032]
【The invention's effect】
As described above, according to the present invention, in the recording apparatus provided with this type of option unit, the option unit is installed in the recording apparatus without being affected by the fluctuation factors on the user side such as the difference in the usage frequency of the option unit of the user. Measurement and update of the characteristic value C in the option addition state with the option unit and the characteristic value A in the standard state of only the standard unit not equipped with the option unit to the latest value is performed more appropriately than before.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a motor control device mounted on an ink jet printer according to the present invention.
FIG. 2 is a flowchart for explaining characteristic value measurement processing by a motor characteristic measurement unit;
FIG. 3 is a flowchart illustrating motor drive control processing by a motor control calculation unit.
FIG. 4 is a block diagram showing another embodiment of the motor control device mounted on the ink jet printer according to the present invention.
FIG. 5 is a flowchart for explaining characteristic value measurement processing by a motor characteristic measurement unit according to another embodiment.
FIG. 6 is a flowchart for explaining motor drive control processing by a motor control calculation unit according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Motor characteristic measurement part 2 Motor control calculating part 4 Motor drive circuit 5 Motor 6 Standard unit 7 Option unit

Claims (5)

  A motor as a power source, a standard unit which is a drive system driven by the motor, a motor characteristic measuring means for measuring the characteristics of the motor, a memory for storing the characteristics measured by the motor characteristic measuring means, A motor control arithmetic unit for controlling a motor based on characteristics stored in the memory, and a motor control device in a recording apparatus having a detachable option unit as a drive system driven by the motor, The memory stores a first storage unit that stores the characteristics of the motor in a standard state in which only the standard unit is driven, and a second storage unit that stores the characteristics of the motor in an option addition state in which the option unit is mounted. A storage unit, and the second storage unit includes a characteristic value C in an option addition state as a characteristic value stored in the second storage unit. The offset value B that is a value obtained by subtracting the standard state characteristic value A, that is, B = C−A, is stored, and the motor characteristic measuring means stores the memory according to the latest measured characteristic values A and C. The characteristic value A and the offset value B stored in the memory are updated as needed even when the characteristic value C is not measured, and the motor control calculation unit stores the characteristic value A and the offset value B in the memory when the option is added. The motor is controlled based on the characteristic value C obtained by adding the offset value B to the characteristic value A in the standard state, that is, C = A + B, and the motor is controlled based on the characteristic value A in the standard state. A motor control device comprising the motor control device.   A motor as a power source, a standard unit which is a drive system driven by the motor, a motor characteristic measuring means for measuring the characteristics of the motor, a memory for storing the characteristics measured by the motor characteristic measuring means, A motor control arithmetic unit for controlling a motor based on characteristics stored in the memory, and a motor control device in a recording apparatus having a detachable option unit as a drive system driven by the motor, The memory stores a first storage unit that stores a motor characteristic value A in a standard state in which only the standard unit is driven, and a motor characteristic value C in an option addition state in which the option unit is mounted. A second storage unit, wherein the motor characteristic measuring means stores the characteristics stored in the memory according to the latest measured characteristic values A and C. A and C are updated as needed, and when the characteristic value A is updated, even when the characteristic value C is not measured, the increase / decrease value ΔA of the change amount of the value accompanying the update of the characteristic value A is stored. The characteristic value C is added (C + ΔA) to update the characteristic value C as C + ΔA, and the motor control calculation unit stores the characteristic value A stored in the memory when the option is added. The motor is configured to control the motor based on the characteristic value C updated as needed when the motor is updated, and to control the motor based on the characteristic value A in the standard state. Control device.   3. The standard unit according to claim 1, wherein the standard unit is a drive system mainly including a paper feed roller that conveys a recording material toward a recording area, and the optional unit is attached and detached near the downstream side of the recording area. A cutter unit that is freely mounted. The cutter unit includes a discharge drive roller for discharging the cut and separated recording material out of the apparatus, and the discharge drive roller is driven by using the motor as a power source. There is a motor control device.   4. The recording apparatus according to claim 3, wherein the recording device is configured to be able to convey and record a roll paper as a recording material, and the motor characteristic measuring unit measures the characteristic value C when recording on the roll paper. A motor control device configured to be executed when it is used up.   A recording apparatus comprising the motor control device according to any one of claims 1 to 4.

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