JP2831166B2 - Driver controller for vertical linear motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver control device for a vertical linear motor.

[0002]

2. Description of the Related Art A conventional vertical linear motor will be described with reference to FIG. 3. 1 is a controller, 2a to 2d are drivers, 3 is a vertical linear motor, and 4 is each of the drivers 2a.
2d, the primary armature coil of the vertical linear motor 3, the transport capsule 5 having a secondary movable magnet, and the position detector 6 are provided.

In the vertical linear motor shown in FIG. 3, the position detector 6 detects the position of the transfer capsule 5 having the secondary movable magnet, and sends the resulting transfer capsule position detection signal to the controller 1. Here, the thrust command is calculated, and the resulting thrust command is sent to all the drivers 2a to 2d to control the excitation current of each primary armature coil 4 provided corresponding to these drivers 2a to 2d. Thus, positioning and speed control of the transport capsule 5 are performed.

[0004]

In the conventional vertical linear motor shown in FIG. 3, in order to extend the length of the vertical linear motor, each primary armature coil provided corresponding to the drivers 2a to 2d is used. 4, it is necessary to control the exciting current of the primary armature coil 4 located at a position distant from the transfer capsule 5.
There was a problem of generating heat.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a driver control device for a vertical linear motor capable of reducing power consumption and preventing heat generation. Is to do.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an arrangement in which a transfer capsule is arranged along a moving direction.
Of the primary armature coils and the transfer capsule
A movable magnet provided on the vehicle, a position detector for detecting the position of the transfer capsule, a controller for calculating a thrust command based on a transfer capsule position detection signal from the position detector, and the primary motor Each child coil
And a driver for controlling the exciting current of the primary armature coil in accordance with a thrust command from the controller to perform positioning and speed control of the transport capsule. Transfer capsule position detection signal and the primary side armature coil
For each thrust supply section to the transfer capsule
Compare the set threshold value and set the driver ON / OFF.
A comparator for outputting an off signal; and a switch for turning on and off the driver in response to a driver on / off signal from the comparator.

[0007]

The vertical linear motor driver control device of the present invention is configured as described above, detects the position of the transport capsule by the position detector, and sends the resultant transport capsule position detection signal to the controller. Here, a thrust command is calculated, and this thrust command is sent to each driver according to the position of the transfer capsule, while a transfer capsule position detection signal from the position detector is sent to each comparator. At this time, each comparator compares the transport capsule position detection signal with the primary
Each child coil corresponds to the thrust supply section to the transport capsule
The set threshold value is compared with the set threshold value, and in the section where the transport capsule is located, the position detection value exceeds the set threshold value. Therefore, the switch-on signal is sent from the comparator to the switch, and the switch-on signal is sent from the switch to the driver. A signal is sent to control the excitation current of the primary armature coil corresponding to the signal to control the positioning and speed of the transport capsule. At this time, in other sections, since the position detection value does not exceed the set threshold value, the comparator sends a switch-off signal to the switch, and the switch sends a driver-off signal to the driver. Does not control the exciting current of the slave coil. That is, the on / off operation of each driver is performed along with the movement of the transport capsule.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vertical linear motor driver control device according to the present invention will be described below with reference to an embodiment shown in FIGS.
1 is a controller, 2a to 2d are drivers, 3 is a vertical linear motor, 4 is a primary armature coil of a vertical linear motor 3 provided corresponding to each of the drivers 2a to 2d, and 5 is a secondary armature. Transfer capsule with side movable magnet,
6 is a position detector.

Reference numerals 7a to 7d denote comparators provided corresponding to the drivers 2a to 2d, and reference numerals 8a to 8d denote comparators 7a to 7d.
7d and the drivers 2a to 2d, the comparators 7a to 7d compare the transport capsule position detection signal from the position detector 6 with a preset threshold value to turn on the driver.・ Outputs off signal. The switches 8a to 8d turn on and off the drivers 2a to 2d in response to driver on / off signals from the comparators 7a to 7d. That is, the comparators 7a to 7d and the switches 8a to
8d, a driver control device 9 is constituted.
The driver control device 9 controls the transfer capsule from the position detector 6.
The position detection signal is set in advance by comparators 7a to 7d.
Software now performs comparison processing with the set threshold value
ing.

As shown in FIG. 2, the threshold values of the comparators 7a to 7d are set as follows based on the thrust relationship between the drivers 2a to 2d. That is, the thrust of the primary armature coil 4 corresponding to the driver 2a is in the section A to A ′ (driver a).
Section) . The driver 2b ～2D also B～B 'section (driver b section), C~C' section (Dora
Iva c section) , D to D 'section (driver d section)
Each influence, that is, a thrust is given to the transport capsule 5 . Based on the thrust supply section for each of the drivers 2a to 2d, the threshold values of the comparators 7a to 7d are A to
A ′, B to B ′ for the driver 2b, C to C ′ for the driver 2c, and D to the driver 2d.
To D ′.

Next, the operation of the driver control device 9 for the vertical linear motor shown in FIGS. The position of the transport capsule 5 is detected by the position detector 6, and the resulting transport capsule position detection signal is sent to the controller 1, where the thrust command is calculated, and the resulting thrust command is transmitted to the drivers 2a to 2a. While sending to 2d according to the position of the transport capsule, the transport capsule position detection signal from the position detector 6 is transmitted to the driver control device 9. And this
In the driver control device 9 described above, the position of the transport capsule is detected.
ON / OFF control of drivers 2a to 2d based on signals
I do.

At this time, the comparators 7a to 7d compare the transport capsule position detection signal from the position detector 6 with a preset threshold value. Now the transport capsule 5 is shown in FIG.
Since the position detected value entering the comparator 7a exceeds the set threshold value, the switch 7a outputs a switch-on signal from the comparator 7a to the switch 8a, and the switch 8a sends the switch 2a to the driver 2a. Outputs driver ON signal,
The positioning / speed control of the transfer capsule 5 is performed by controlling the exciting current of the primary armature coil 4 corresponding to the driver 2a. At this time, since the position detection values entering the other comparators 7b to 7d do not exceed the set threshold value, the comparators 7b to 7d output switch-off signals to the switches 8b to 8d, and the switches 8b to 8d output the driver 2b. 2d to output a driver-off signal, and do not control the exciting current of the primary armature coil in these other sections.

If the transport capsule 5 moves to the section AB 'in FIG. 2, the position detection value entering the comparators 7a and 7b exceeds the set threshold value, so that the comparators 7a and 7b switch to the switches 8a and 8b. A switch-on signal is output, a driver-on signal is output from the switches 8a and 8b to the driver 2ap2b, and an excitation current of the primary armature coil 4 corresponding to the drivers 2a and 2b is controlled to position and speed the transfer capsule 5 Perform control. At this time, the other comparators 7c, 7
Since the position detection value falling within d does not exceed the set threshold value, the comparators 7c and 7d output a switch-off signal to the switches 8c and 8d, and the switches 8c and 8d output the driver 2
A driver-off signal is output to c and 2d, and excitation current control of the primary armature coil is not performed in these other sections.

That is, as the transport capsule moves, each driver and the primary armature coil are turned on and off.

[0015]

The vertical linear motor driver control device of the present invention detects the position of the transport capsule by the position detector as described above, and sends the resulting capsule position detection signal to the controller. A thrust command is calculated, and the thrust command is sent to each driver according to the position of the transport capsule, while a transport capsule position detection signal from the position detector is sent to the driver control device. At this time, each comparator of the driver control device supplies the transport capsule position detection signal and the thrust to the transport capsule in advance for each primary armature coil.
The threshold value set for each feeding section is compared with the setting threshold value. In the section where the transport capsule is located, the position detection value exceeds the setting threshold value. A signal is sent from the switch to the driver, and a driver-on signal is sent to the driver to control the excitation current of the corresponding primary armature coil to control the positioning and speed of the transfer capsule. At this time, in other sections, since the position detection value does not exceed the set threshold value, the comparator sends a switch-off signal to the switch, and the switch sends a driver-off signal to the driver. Does not control the exciting current of the slave coil. In other words, the on / off operation of each driver is performed together with the movement of the transport capsule, so that the power consumption can be reduced and heat generation can be prevented. In addition, the driver control device uses the comparator to detect the transport capsule position detection signal from the position detector in advance for each primary-side armature coil.
Each corresponding to the thrust supply section to the transport capsule.
Since the comparison processing is performed by software with the set threshold value that has been set , for example, it is possible to install one laser measuring device or the like as a position detector and compare the output signal of the laser measurement device. There is no need to install hardware to detect the position along the entire length of the capsule along the moving direction, so that the number of parts can be minimized, the system configuration can be simplified, and maintenance can be facilitated. it can.

[Brief description of the drawings]

FIG. 1 is a system diagram showing one embodiment of a driver control device for a vertical linear motor according to the present invention.

FIG. 2 is an explanatory diagram showing a relationship between a position of a transport capsule and a thrust.

FIG. 3 is a system diagram showing a conventional vertical linear motor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Controller 2a-2d driver 3 Vertical linear motor 4 Primary armature coil 5 Conveying capsule with secondary movable magnet 6 Position detector 7a-7d Comparator 8a-8d Switch 9 Driver control device

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuyoshi Hayakawa 1-1-1, Wadazakicho, Hyogo-ku, Kobe City, Hyogo Prefecture Inside Mitsubishi Heavy Industries, Ltd.Kobe Shipyard (72) Inventor Kazuhiro Kameshiro Kobe City, Hyogo Prefecture 1-1-1, Wadazakicho, Hyogo-ku Mitsubishi Heavy Industries, Ltd.Kobe Shipyard (72) Inventor Manabu Kinugasa Kazuhiro Ozaki, Investigator, Power Reactor and Nuclear Fuel Development Corp. (56) References JP-A-56-58772 (JP, A) JP-A-2-146981 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02P 7/00 101

Claims (1)

(57) [Claims] 1. A method according to claim 1, wherein the transfer capsules are arranged along a moving direction.
The primary armature coil and the transfer capsule
A secondary movable magnet provided, a position detector for detecting the position of the transfer capsule, a controller for calculating a thrust command based on a transfer capsule position detection signal from the position detector, and the primary armature For each coil
In the vertical linear motor and a provided by the driver to perform controlling the excitation current of the primary side armature coil positioning and speed control of the transport capsule by the thrust command from the controller, conveying from said position detector Capsule position detection signal and
Thrust to the transfer capsule for each primary armature coil
A comparator for comparing a set threshold value set for each supply section and outputting a driver on / off signal;
A switch for turning on / off the driver in response to a driver on / off signal from the comparator.