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Rotary transformer system fault detection method, device and controller

A technology of resolver and system failure, applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve problems such as small detection coverage, and achieve the effect of solving small detection coverage.

Inactive Publication Date: 2019-06-14
SUNGROW POWER SUPPLY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a resolver system fault detection method, device and controller to solve the problem of small detection coverage in the prior art

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  • Rotary transformer system fault detection method, device and controller
  • Rotary transformer system fault detection method, device and controller
  • Rotary transformer system fault detection method, device and controller

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0046] The invention provides a fault detection method for a resolver system to solve the problem of small detection coverage in the prior art.

[0047] See figure 2 , the resolver system fault detection method includes:

[0048] S101. Collect two orthogonal signals output by the resolver feedback processing circuit in the resolver system;

[0049] In practical applications, the acquisition of the two orthogonal signals can be realized through corresponding ports, such as ADC (Analog-to-...

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Abstract

The invention provides a rotary transformer system fault detection method, a device and a controller. Based on certainty of an amplitude value of a rotary transformer feedback orthogonal signal, whenany link in the rotary transformer system has fault, according to the amplitude values of two orthogonal signals output by a rotary transformer feedback processing circuit, the fault can be represented through judging that at least one of the two orthogonal signals is abnormal; and namely, full-range fault detection for the rotary transformer system can be realized, and a problem of small detection coverage range in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a fault detection method and device for a resolver system and a controller. Background technique [0002] In the electric vehicle drive system, the rotor position of the motor is a key variable for torque control; if the rotor position detection is inaccurate, the electric vehicle may have the risk of losing control of the output torque. The existing technology usually uses a resolver system to detect the position of the motor rotor. The system mainly includes four parts: a resolver excitation amplifier circuit, a resolver and a resolver feedback processing circuit, and a hardware decoding chip, such as figure 1 shown. [0003] The working principle of the resolver system is: the hardware decoder chip sends the excitation signal to the resolver excitation amplifier circuit; the resolver amplifier circuit amplifies the excitation signal sent by the hardware decoder chip...

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Application Information

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IPC IPC(8): G01R31/00
Inventor 杜恩利陈文杰于安博
Owner SUNGROW POWER SUPPLY CO LTD