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Processing circuit and device for excited response signals of rotary transformer

A technology of excitation signal and processing circuit, which is applied in the direction of electronic commutator, motor parameter estimation/correction, etc., can solve the problems of signal distortion output signal parameters, unreliable decoding, not within the preset range, etc., to achieve sine Good degree, save system cost, enhance the effect of output load capacity

Pending Publication Date: 2018-08-21
SUZHOU WEICHUANG ELECTRICAL EQUIP TECH
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Problems solved by technology

[0009] The purpose of the present invention is to provide a resolver excitation response signal processing circuit and processing device, aiming to solve the problem of signal distortion and output signal parameters not within the preset range in the existing resolver circuit technology, resulting in incorrect decoding reliable question

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  • Processing circuit and device for excited response signals of rotary transformer
  • Processing circuit and device for excited response signals of rotary transformer
  • Processing circuit and device for excited response signals of rotary transformer

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The above-mentioned resolver excitation response signal processing circuit and processing device are suitable for the hardware circuit design of the resolver excitation response signal processing of the AC asynchronous motor rotor position decoding system for new energy vehicles. The processing circuit includes: decoding chip AD2S1205 and rotary The excitation signal interface circuit of the transformer, the decoding chip AD2S1205 and the response signal interface circuit of the resolver. Among them, the design of the excitation signal interface circuit mainly solves the problem that the amp...

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Abstract

The invention belongs to the technical field of power electronics, and provides a processing circuit and device for excited response signals of a rotary transformer. Simple gain adjustment and bias voltage adjustment are carried out in order to adapt to different rotary transformer turn ratios, and the problems that excitation amplitude is not matched, and response signals are not matched as direct current components and alternating current voltages are synchronously amplified are avoided. An excitation push-pull output module is used for enhancing the output on-load capacity, and the system cost is reduced. A port of the response signals is subjected to electrostatic discharge protection processing and filtering parameter model selection, so that normal work of common and differential mode response signals is guaranteed, the sine degree is good, it is guaranteed that fed common mode signals are within a recognition range, the phenomenon of signal distortion is avoided, and the problems that in the existing rotary transformer circuit technology, signal distortion exists, output signal parameters are not within a preset range, and therefore decoding is not reliable are solved.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a processing circuit and a processing device for a resolver excitation response signal. Background technique [0002] A resolver is an AC micro-motor that outputs electrical signals that are a function of the rotor angle or position. It is mainly used in angular position servo control systems or motion servo control systems, and is used for sensing and measuring angular positions. , which can be used to accurately measure the signal of the rotor position, thereby improving the control performance of the motion servo control system, and has been widely used in the field of motor control. The resolver is combined with the digital decoding chip to realize the decoding of angular position and speed signals, such as figure 1 As shown, where: θ is the shaft angle, sin(ωt) is the rotor excitation frequency, E0 is the rotor excitation amplitude, and the resolution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/17H02P23/14
CPCH02P6/17H02P23/14
Inventor 骆鹏孙旭辉
Owner SUZHOU WEICHUANG ELECTRICAL EQUIP TECH
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