JP5070464B2 - Redundant rotation type finite angle detector - Google Patents

Description

  The present invention relates to a redundant rotation type finite angle detector, and in particular, forms a pair of channel sensors by disposing protruding magnetic poles having windings only within a predetermined angle range at a pair of 180-degree symmetrical positions of a ring-shaped stator. The present invention relates to a novel improvement for constructing a double redundant system by using a pair of identical output signals from each channel sensor.

As this type of rotational finite angle detector that has been used in the past, for example, the configuration shown in FIG. 2 can be cited, but since the applicant has only developed in-house and has not applied for a patent. Here, patent literature showing the configuration is not disclosed.
2 is an arcuate finite angle stator having a preset finite angle in a range of 100 degrees, for example, and an inner surface 1a of the finite angle stator 1 has a plurality of protruding magnetic poles. 2 are arranged at predetermined angular intervals.

A winding 3 composed of a well-known excitation winding 3a and output winding 3b is wound around each protruding magnetic pole 2.
Inside the finite-angle stator 1, a finite-angle rotor 4 consisting only of a fan-shaped core (iron core or the like) formed at a finite angle is rotatably provided within a range of a predetermined finite angle. The rotational angle position of the finite angle rotor 4 can be detected according to the finite angle rotation.

Since the conventional rotary type finite angle detector is configured as described above, the following problems exist.
That is, since one finite angle rotor is combined with one finite angle stator, only one channel sensor is configured. For example, in response to a demand for a redundant system, FIG. There is also a method of stacking the finite angle sensors shown, but in the case of stacking, it is difficult to match the output signals of each finite angle sensor to be the same, and the magnetism between the finite angle sensors It was also difficult to prevent typical crosstalk.

Rotary finite angle detector according to the present invention, an endless the formed wheel-like stator to name an annular, a plurality of first protruding poles formed at least a predetermined first angular range of the annular stator, the a plurality of second projecting magnetic poles formed on the first angle range and second angle range that Jo Tokoro to opposing annular stator, wound before SL in each of the first protruding poles of only the first angle range a first winding for the first channel, the second front SL angular range only the second coil for the second channel which is wound around the respective second protruding poles, rotatably inside the annular stator And a rotor having at least first and second convex portions that are formed only of the core and whose outer periphery changes in a concavo-convex shape along the radial direction, and the protruding magnetic poles at predetermined intervals over the entire inner circumference of the annular stator And the annular stator is Are stacked by the product, it said first, said the inner surface other than the second angle range the first and only no projecting magnetic poles 2 winding is left, the respective first winding and the respective first protruding pole And a first channel sensor is formed by the first protrusions, a second channel sensor is formed by the second projecting magnetic poles, the second windings, and the second protrusions. The first projecting magnetic poles and the second projecting magnetic poles are arranged 180 degrees symmetrical to each other, and the first convex part and the second convex part of the rotor are symmetrical to each other 180 degrees. And a first output signal obtained from the first channel sensor by a finite angle rotation of the rotor and a second output signal obtained from the second channel sensor and identical to the first output signal. This is a configuration that forms a redundant system.

Since the redundant rotation type finite angle detector according to the present invention is configured as described above, the following effects can be obtained.
That is, a pair of channel sensors are formed by arranging a plurality of projecting magnetic poles having windings at 180 ° symmetrical positions of the ring-shaped stator in a predetermined angle range and detecting a finite angle, and a pair of channels output from each channel sensor. It is possible to detect a double redundant system using the same output signal.
Further, since the ring-shaped stator is formed in a ring shape unlike a conventional finite-angle stator, the strength of the ring-shaped stator is high and the mounting rigidity can be increased, and high reliability can be obtained when mounted on a vehicle or the like. .

  The present invention forms a pair of channel sensors by arranging projecting magnetic poles having windings only in a predetermined angular range at a pair of 180-degree symmetrical positions of a ring-shaped stator, and a pair of identical outputs from each channel sensor. An object of the present invention is to provide a redundant rotation type finite angle detector that forms a double redundant system by using a signal.

Hereinafter, preferred embodiments of a redundant rotating finite angle detector according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
The overall shape is that shown by reference numeral 1 is a wheel-shaped stator formed in an endless shape to name an annular 1, the predetermined first angle range θ of the inner surface 1a of the annular stator 1, a plurality of second One protruding magnetic pole 2 is formed to protrude inward at predetermined angular intervals.

A plurality of second projecting magnetic poles 2A project inwardly at predetermined angular intervals in a second angle range θ ′ opposed to the first angle range θ of the inner surface 1a of the annular stator 1 by 180 degrees. Is formed.
Each of the first protruding magnetic poles 2 and each of the second protruding magnetic poles 2A are configured to be 180 degrees symmetrical with respect to the diameter direction line A shown in FIG.

Each of the first projecting magnetic poles 2 includes a first winding 3 for a first channel that includes an excitation winding 3a and an output winding 3b, which are similar to a known variable reluctance (VR) resolver. Is wound.
The second projecting magnetic pole 2A is wound with a second channel winding 3A composed of an excitation winding 3a and an output winding 3b similar to those described above.

  On the inner side of the ring-shaped stator 1, a ring-shaped ring composed of only a known core (having no windings) having at least first and second convex portions 4A and 4B whose outer periphery changes in a concavo-convex shape along the radial direction. A rotor 4 is rotatably provided on the same axis P as that of the annular stator 1 via a rotating shaft (not shown).

  Each of the first protruding magnetic poles 2, the first winding 3, and the first convex portion 4A form a first channel sensor 10 as a finite angle detector, and each of the second protruding magnetic poles 2A and the second winding. A second channel sensor 11 as a finite angle detector is formed by 3A and the second convex portion 4B.

  Incidentally, in the inner surface 1a of the ring-shaped stator 1, in the position between each of the first protruding magnetic poles 2 and each of the second protruding magnetic poles 2A, in FIG. Although not formed at all, for example, the protruding magnetic poles (not shown) that are the same as the protruding magnetic poles 2 and 2A are formed at predetermined intervals over the entire circumference of the inner surface 1a during press working. When the first winding 3 and the second winding 3A are wound around the protruding magnetic poles 2 and 2A having only the second angle range θ and θ ′, the first protrusions having the first winding 3 shown in FIG. Each second protruding magnetic pole 2A having the magnetic pole 2 and the second winding 3A can be formed.

Therefore, the above-mentioned case, the inner surface 1a each first, but would only have no projecting magnetic pole winding remains between the second protruding pole 2, 2A, no trouble at all finite angle detection, In the case of the laminated ring-shaped stator 1, rollover at the time of the lamination is possible.

  Next, in the above-described configuration, when a rotating shaft (not shown) connected to the rotor 4 is rotated along a predetermined finite angle while an excitation signal is applied to each excitation winding 3a, 3a, Similar to the operation of the known VR resolver, the first and second windings 3 in the first channel sensor 10 and the second channel sensor 11 according to the change in gap permeance due to the gap D between the annular stator 1 and the rotor 4. A redundant system can be configured by obtaining the same pair of output signals indicating the finite angle rotational positions output from the output windings 3b and 3b of 3A. Since this is a redundant system, one output signal is usually used and the other output signal is used in an emergency.

  The output signals (output voltages) output from the windings 3 and 3A of the channel sensors 10 and 11 are the gap D between the annular stator 1, that is, the protruding magnetic poles 2 and 2A, and the rotor 4, respectively. It is configured to decrease when the gap becomes larger and increase when the gap D becomes smaller.

  The first projecting magnetic poles 2 and the second projecting magnetic poles 2A are formed in the same number, and the first windings 3 and the second windings 3A are connected in series or in parallel. Used in connection with

  Further, since the ring-shaped stator 1 is formed in a ring shape unlike a conventional finite angle stator, it is possible to improve the mounting rigidity when the ring-shaped stator 1 is mounted on another device. In addition to rotation, the rotor 4 can be a fixed side and the annular stator 1 can be a rotation side.

It is a top view which shows the redundant system rotation type | mold finite angle detector by this invention. It is a top view which shows the conventional finite angle detector.

DESCRIPTION OF SYMBOLS 1 Ring-shaped stator 1a Inner surface 2 1st protrusion magnetic pole 2A 2nd protrusion magnetic pole 3 1st winding 3A 2nd winding 3a Excitation winding 3b Output winding 4 Rotor 4A 1st convex part 4B 2nd convex part 10 1st channel sensor 11 Second channel sensor A Diameter direction line θ First angle range θ ′ Second angle range D Gap P Coaxial axis

Claims (1)

A ring-shaped stator (1) formed in an endless shape, a plurality of first projecting magnetic poles (2) formed in at least a predetermined first angle range (θ) of the ring-shaped stator (1), and the ring-shaped A plurality of second projecting magnetic poles (2A) formed in a predetermined second angle range (θ ′) facing the first angle range (θ) of the stator (1), and only the first angle range (θ) A first winding for a first channel (3) wound around each of the first projecting magnetic poles (2) and a second projecting magnetic pole (2A) of only the second angle range ( θ ' ). The wound second winding (3A) for the second channel and the ring-shaped stator (1) are rotatably provided inside the core, and at least the outer periphery changes in an uneven shape along the radial direction. A rotor (4) having first and second convex portions (4A, 4B),
The projecting magnetic poles (2, 2A) are formed at predetermined intervals over the entire circumference of the inner surface (1a) of the annular stator (1), and the annular stator (1) is laminated by rolling, and the first and second Only the protruding magnetic poles that do not have the first and second windings (3, 3A) are left on the inner surface (1a) other than the angle range (θ, θ ′),
A first channel sensor (10) is formed by the first protruding magnetic poles (2), the first windings (3), and the first protrusions (4A).
A second channel sensor (11) is formed by the second projecting magnetic poles (2A), the second windings (3A), and the second protrusions (4B).
The annular stator (1) and the rotor (4) are arranged on the same axis (P), and the first protruding magnetic poles (2) and the second protruding magnetic poles (2A) are arranged 180 degrees symmetrical to each other. The first convex part (4A) and the second convex part (4B) of the rotor (4) are arranged 180 degrees symmetrical to each other,
A first output signal obtained from the first channel sensor (10) by a finite angle rotation of the rotor (4) and a second output signal identical to the first output signal obtained from the second channel sensor (11). And a redundant system rotation type finite angle detector.

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