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Resolver

A rotary transformer and coil technology, applied in the direction of transformer, conversion sensor output, transformer/inductor coil/winding/connection, etc., can solve problems such as angle detection error

Inactive Publication Date: 2013-01-16
AISAN IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In this case, since the Figure 18 In case the gain of the COS coil is set to 0.71 / 0.57=1.25, therefore, with Figure 19 The gain in the case of 0.63 / 0.53=1.19 is different, and there is a problem of angle detection error
[0013] Moreover, since it is desired to perform high-precision detection on the output shaft of an electric motor for automobiles, this is particularly a problem

Method used

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Embodiment Construction

[0046] Next, a first embodiment of the present invention will be described with reference to the drawings.

[0047] Figure 16 It is a cross-sectional view simply showing the motor structure of the first embodiment.

[0048]The motor 10 is a brushless motor including a case main body 61, a case cover 62, a motor stator 63, a motor rotor 64, a motor shaft 65, a motor bearing 66a, and a motor bearing 66b.

[0049] The case main body 61 and the case cover 62 are made of cast aluminum alloy or the like. The motor bearing 66b is mounted on the case main body 61, and the motor bearing 66a is mounted on the case cover 62. The motor shaft is supported by the motor bearing 66b and the motor bearing 66a. 65 to enable the motor shaft 65 to rotate.

[0050] A motor stator 63 is fixed to the inner periphery of the case main body 61 . The motor stator 63 has coils, and generates magnetic force by energization.

[0051] On the other hand, a motor rotor 64 including permanent magnets is f...

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Abstract

A resolver comprises a first coil layer and a second coil layer each formed on a flat plate and an insulating layer formed between the first coil layer and the second coil layer. A SIN signal excitation coil includes a SIN first coil formed in the first coil layer and a SIN second coil formed in the second coil layer. A COS signal excitation coil includes a COS first coil formed in the first coil layer and a COS second coil formed in the second coil layer.

Description

technical field [0001] The present invention relates to a resolver for detecting the rotation angle of an output shaft of an automobile motor or the like. Background technique [0002] In hybrid vehicles and electric vehicles, high-output brushless motors are being used, and they are expected to increase in power in the future. In order to control a brushless motor of a hybrid vehicle, it is necessary to accurately grasp the rotation angle of the output shaft of the motor. This is because it is necessary to accurately grasp the rotational position of the rotor in order to control switching of energization to each coil of the stator. [0003] Therefore, the resolver is mounted on the motor, and it is desired to detect the angle accurately. The resolver used in the driving mechanism of an automobile is required to have high precision due to the high rotational speed of the driving mechanism in addition to good environmental adaptability. Furthermore, like other automotive c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/18H01F27/28H01F41/04G01D5/12
CPCH02K24/00H02K3/26G01D15/00G01D1/00G01B7/30G01D5/2086
Inventor 中村健英
Owner AISAN IND CO LTD