JPH04220517A - Rotation detector - Google Patents

Abstract

PURPOSE:To reduce particularly the number of leads to be used for input/output for a rotation detector such as a resolver. CONSTITUTION:A rotation detector comprises an analog/digital converter connected to a stator winding and two leads connected to the analog/digital converter, and also comprises an oscillator connected to a first detector winding and at least two leads connected to the oscillator.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotation detector such as a resolver, and more particularly to a novel improvement for reducing the number of lead wires used for input and output.

0002

[Prior Art] There are various rotation detectors such as resolvers of this type that have been used in the past, but a typical configuration among them is the one disclosed in Japanese Patent Application Laid-Open No. 63-318725. The configurations shown in FIGS. 5 and 6 can be mentioned. In other words, in the case of the tracking type resolver shown in FIG.
A two-phase detector rotor 3 consisting of a rotor winding 1 and a second rotor winding 2 is rotatably provided, and a pair of lead wires R1 and R2 are connected to the first rotor winding 1. At the same time, the second rotor winding 2 is configured as a closed loop.

A detector stator 4 is fixedly provided opposite the detector rotor 3, and this detector stator 4 has a first detector stator 4 having a phase difference of 90° from each other.
It is composed of a stator winding 5 and a second stator winding 6. A resolver/digital converter 7, which is an analog/digital converter, is connected to each lead wire S1, S2, S3, and S4 connected to each of the stator windings 5, 6, and this resolver/digital converter 7 is connected to a pair of output lead wires 8 and 9.

Furthermore, in the case of the receiver type resolver shown in FIG. 6, the detector stator 4 is constituted by a first stator winding 5 and a second stator winding 6, which are configured to have a phase difference of 90° from each other. At the same time, four lead wires S1, S2, S3, and S4 are connected to each stator winding 5, 6. A detector rotor 3 is rotatably provided opposite the detector stator 4, and a rotor winding 1 constituting the detector rotor 3 has a pair of lead wires R.
1, R2 is connected.

[0005]

[Problems to be Solved by the Invention] Conventional rotation detectors are
Due to the above configuration, the following problems existed. In other words, in the case of the tracking type shown in Fig. 5, the resolver/digital converter and the detector stator were connected via independent connection wires, so there were a total of six lead wires from the rotation detector body. This made it difficult to connect the lead wires. Furthermore, since the resolver/digital converter is provided at a position separated from the main body of the rotation detector, it is not easy to connect the output signal of the rotation detector to other signal processing sections. Furthermore, in the case of the receiver type shown in FIG. 6, the number of lead wires on the rotation detector main body was six, making it difficult to connect the lead wires. The present invention has been made to solve the above-mentioned problems, and in particular, it is an object of the present invention to provide a rotation detector that reduces the number of lead wires used for input and output.

[0006]

[Means for Solving the Problems] A rotation detector according to the present invention includes at least two-phase rotor windings provided on a detector rotor within a main body, and at least two-phase stator windings facing the detector rotor. A rotation detector comprising: an analog/digital converter connected to the stator winding; and two lead wires connected to the analog/digital converter, the analog/digital converter being connected to the main body. This is the configuration provided in the.

The rotation detector according to another aspect of the invention includes a first detector winding of at least two phases provided in the main body, and a second detector winding of at least one phase opposite to the first detector winding. an oscillator connected to the first detector winding; and at least two detector windings connected to the first detector winding. The main body has a configuration in which signals are input and output using a minimum of four lead wires.

[0008]

[Operation] In the rotation detector according to the present invention, in the case of the tracking type configuration shown in FIG. 1, since the analog/digital converter is directly connected to the detector stator, the output lead wire on the detector stator side is There are 2 lead wires, and input/output can be performed with a total of 4 lead wires on the input/output side.

In the case of the receiver type configuration shown in FIG. 2, an oscillator is connected to the detector stator (which can also be a rotor) having a two-phase winding configuration, and the 90° phase shift generated by the oscillator is In order to supply the SIN wave and COS wave to the winding, only two lead wires are required to supply the signal to the detector stator, making a total of four leads on the input and output sides. Input and output can be performed using lines.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the rotation detector according to the present invention will be described in detail below with reference to the drawings. Note that the same or equivalent parts as in the conventional example will be described with the same reference numerals. 1 to 4 are for illustrating a rotation detector according to the present invention. FIG. 1 is a configuration diagram showing a tracking type rotation detector, FIG. 2 is a configuration diagram showing a receiver type rotation detector, and FIG.
4 is a half-sectional view showing a hollow shaft type rotation detector, and FIG. 4 is a side view showing the shaft type rotation detector.

First, in FIG. 1, the reference numeral 1 indicates a first rotor winding provided on the main body 30, and a second rotor winding is provided with a phase difference of 90° from this first rotor winding 1. The wire 2 constitutes a two-phase detector rotor 3, which is rotatably provided in the main body 30. A pair of lead wires R1 and R2 connected to the first rotor winding 1 are connected to an oscillator 31,
The second rotor winding 2 is configured as a closed loop, and includes a pair of lead wires 32 connected to the oscillator 31;
33 is led out of the main body 30.

A detector stator 4 is fixedly provided to the main body 30 opposite to the detector rotor 3, and the detector stator 4 includes a first stator having a phase difference of 90° from each other. It is composed of a winding 5 and a second stator winding 6. Each of the lead wires S1, S2, S3, and S4 connected to each of the stator windings 5 and 6 is directly connected to a resolver/digital converter 7, which is an analog/digital converter.
A pair of output lead wires 8 and 9 are connected to.

The resolver/digital converter 7 is provided in the main body 30, and each output lead wire 8, 9 provided in the resolver/digital converter 7 is led out of the main body 30. There is.

Therefore, by applying an input signal to the pair of lead wires 32 and 33 of the oscillator 31 through a signal transmission means (not shown) such as a slip ring or a rotary transformer, the ° S with different phase
An IN wave and a COS wave are sent to each winding 1,2.

In the above-mentioned state, the rotation state of the detector rotor 3 is detected by each winding 5, 6 of the detector stator 4, and the rotation detection signal obtained from the analog/digital converter 7 is transmitted to the output lead wires 8, 9.

Further, in the receiver type rotation detector shown in FIG. 2, the same parts as in FIG. 1 will be described using the same reference numerals. The first stator winding 5 and the second stator winding 6, which are configured to have a phase difference of 90 degrees from each other, constitute the detector stator 4 (constituting the first detector winding), and each stator winding 5, lead wire S1 connected to 6,
An oscillator 31 is connected to S2, S3, and S4.

A detector rotor 3 (constituting a second detector winding) is rotatably provided opposite the detector stator 4, and the rotor winding 1 constituting the detector rotor 3 includes: A pair of lead wires R1 and R2 are connected. Therefore, by applying an input signal to the pair of lead wires 32 and 33 of the oscillator 31, the 9
A SIN wave and a COS wave with different phases of 0° are connected to each winding 1,
Sent to 2.

In the above-mentioned state, the rotation state of the detector rotor 3 is taken out from each lead wire R1, R2 of the detector rotor 3 via a signal transmission means such as a slip ring or a rotary transformer. In the case of the receiver type configuration shown in FIG. (Second detector winding)
It goes without saying that a rotation detector can also be constructed when the stator is used as a stator.

Note that FIGS. 3 and 4 show a hollow shaft type rotation detector 50 and a shaft type rotation detector 60.
In the case of the hollow shaft type rotation detector 50, a hollow rotating shaft 51 is rotatably provided within the main body 30, a detector rotor 3 is provided on the hollow rotating shaft 51, and a detector stator 4 is provided on the main body 30. is provided.

A rotary transformer 52 is provided in the main body 30, and the analog/digital converter 7 is provided in the main body 30. Further, the shaft type rotation detector 60 has a structure in which the analog/digital converter 7 is provided on the main body 30 in which the rotation shaft 61 is provided. In this embodiment, the case of a resolver has been described, but the same effect can be obtained when a synchronizer or the like is used. Also, the number of winding phases used can be increased.

[0021]

[Effects of the Invention] Since the rotation detector according to the present invention is constructed as described above, the following effects can be obtained. That is, since the analog/digital converter is directly connected to the tracking type rotation detector, the number of lead wires on the input/output side can be significantly reduced. In addition, in the case of a receiver-type rotation detector with a built-in oscillator, the signal can be supplied to the two-phase winding through two lead wires, so the number of lead wires can be significantly reduced as in the above case. can be done. Furthermore, the connection process when connecting the rotation detector to another device is greatly simplified, and the rotation detector can be easily attached to and detached from the device.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing a tracking type rotation detector, which is a rotation detector according to the present invention.

FIG. 2 is a configuration diagram showing a receiver-type rotation detector.

FIG. 3 is a half-sectional view showing a hollow shaft type rotation detector.

FIG. 4 is a side view showing a shaft-type rotation detector.

FIG. 5 is a configuration diagram showing a conventional tracking type rotation detector.

FIG. 6 is a configuration diagram showing a conventional tracking type rotation detector.

[Explanation of symbols]

1 Rotor winding 2 Rotor winding 3 Detector rotor (second detector winding) 4
Detector stator (first detector winding) 5 Stator winding 6 Stator winding 7 Analog/digital converter 8 Lead wire 9 Lead wire 32 Lead wire 33 Lead wire R1 Lead wire R2 Lead wire 30 Main body 31 Oscillator

Claims (2)

[Claims] [Claim 1] Detector rotor (3) within the main body (30)
A rotation detector having at least two-phase rotor windings (1, 2) provided at the detector rotor (3) and at least two-phase stator windings (5, 6) facing the detector rotor (3), wherein the stator winding an analog/digital converter (7) connected to the lines (5, 6) and said analog/digital converter (
7) and two lead wires (8, 9) connected to the
The analog/digital converter (7) is connected to the main body (30
). 2. A first detector winding (4) of at least two phases provided in the main body (30), and a second detector of at least one phase facing the first detector winding (4). Winding wire (3)
A rotation detector comprising the above-mentioned detector windings (3, 4) as a stator or a rotor,
an oscillator (31) connected to the first detector winding (4);
and at least two lead wires (32, 33) connected to the oscillator (31). A rotation detector characterized in that it is capable of inputting and outputting.