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Real-time monitoring method of transformer ratio of sine and cosine resolver

A resolver, real-time monitoring technology, applied to instruments, measuring electrical variables, measuring devices, etc., can solve problems such as safety accidents, control failures, damage to control components and control systems, etc., to achieve elimination of influence, strong versatility, and strong reliability Faithful effect

Inactive Publication Date: 2019-04-23
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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AI Technical Summary

Problems solved by technology

[0006] The angular position information collected by the sine-cosine resolver is the direct basis for the angle control of the control system. If the position information is collected incorrectly, it will lead to control failure and even damage to the control components and control system, resulting in safety accidents.

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  • Real-time monitoring method of transformer ratio of sine and cosine resolver
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  • Real-time monitoring method of transformer ratio of sine and cosine resolver

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Embodiment Construction

[0016] A real-time monitoring method for the voltage transformation ratio of a sine-cosine resolver is realized based on the real-time monitor module of the sine-cosine resolver, and the excitation signal and the feedback signal of the sine-cosine resolver are sequentially squared and summed and quotiented to obtain the transformed voltage Ratio K; the monitoring result is obtained by comparing the transformation ratio coefficient K with the judgment threshold.

[0017] The decision threshold adjusts the upper limit threshold K in the transformation ratio monitoring unit according to the actual value range of the transformation ratio of the sine-cosine resolver MAX and the lower threshold K MIN .

[0018] The real-time monitoring module includes a square computing unit, a sum and a quotient computing unit, and a transformer ratio monitoring unit. Among them, the square operation unit completes the operation of squaring the excitation signal (EXC+ / -) and the feedback signal (...

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Abstract

The invention relates to a real-time monitoring method of the transformer ratio of a sine and cosine resolver, and belongs to the field of control system design. An excitation signal (EXC+ / -) and a feedback signal (SIN+ / -, COS+ / -) of the sine and cosine resolver are demodulated and operated in real time, the voltage transformation ratio K of the sine and cosine resolver is resolved, and real-timemonitoring of the health status of a sine and cosine sensor is realized. According to the real-time monitoring method of the transformer ratio of the sine and cosine resolver, high instantaneity is achieved, the excitation signal is introduced to participate in monitoring, the influence of the excitation signal on monitoring results is eliminated, and high universality is achieved.

Description

technical field [0001] The invention discloses a real-time monitoring method for the voltage transformation ratio of a sine-cosine rotary transformer, which belongs to the field of control system design. Background technique [0002] With the development of technology, angular displacement transformers (also called: angular displacement sensors) are often used in control systems to obtain angular displacement information of control components. Applying single-phase alternating current to the stator winding of the angular displacement transformer, the change of the rotor angle and the output voltage of the rotor winding have a functional relationship such as a sine-cosine relationship or a linear relationship, so that the angular displacement transformer is divided into a sine-cosine rotary transformer and a linear rotary transformer [0003] These two types of sensors are widely used in the field of control. The sine-cosine rotary transformer has high stability and anti-int...

Claims

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Application Information

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IPC IPC(8): G01R29/20
CPCG01R29/20
Inventor 索晓杰马小博李亚锋周勇段小虎边庆
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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