System and method for generating rotary transformer excitation signal

Abstract

The invention discloses a rotary transformer excitation signal generation system and method, and the system comprises a main control module which is used for generating a digital modulation wave which changes according to a sine rule; a low-pass filter which is used for converting the digital modulation wave into a sine wave; a first-stage operation amplification circuit which is used for carrying out the first-stage amplification of the sine wave; a high-pass filter circuit which is used for blocking sine waves; a second-stage operational amplification circuit which is used for carrying out second-stage amplification on the sine waves; and a phase inverting circuit which is used for inverting the sine waves to generate rotary transformer excitation signals. The problems of large weight, large size, high cost and difficulty in integration of the existing rotary transformer excitation signal generation method are solved, and the rotary transformer excitation signal generation method has the advantages of low cost, small size, light weight, easiness in integration and the like.

Description

technical field [0001] The invention belongs to the technical field of resolver control, in particular to a system and method for generating a resolver excitation signal. Background technique [0002] In a closed-loop control system, a resolver or a photoelectric encoder is generally used for angle signal acquisition. When a resolver is used for angle acquisition, its signal source is generally provided by an excitation module or an excitation chip, or processed by a digital-to-analog conversion circuit. The excitation module is heavy and bulky, and requires an independent external power supply. The excitation chip or digital-to-analog conversion chip is expensive and requires peripheral configuration circuits, which are not conducive to the miniaturization, integration, and low-cost requirements of the product. Contents of the invention [0003] The present invention overcomes one of the deficiencies of the prior art, provides a system and method for generating a resolve...

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Problems solved by technology

[0003] The present invention overcomes one of the deficiencies of the prior art, provides a system and method for generating a resolver excitation signal, and solves the problems of large weight, large volume, high cost and difficulty in integration of the existing resolver excitation signal generation method problem, has the advantages of low cost, small size, light weight, and easy integration

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