Method for testing conversion precision of resolver-to-digital converter

Abstract

The invention discloses a method for testing conversion precision of a resolver-to-digital converter. The method comprises the following steps of simulating a sinusoidal modulation signal, a cosine modulation signal and a reference signal of a resolver by using a waveform generator, and inputting the signals to a tested resolver-to-digital converter; and capturing an output digital signal of the tested resolver-to-digital converter, and utilizing a traditional ADC static parameter testing method to solve the output digital signal of the tested resolver-to-digital converter in order to obtain atest result. According to the method, sine and cosine angle modulation output signals and the reference signal of the resolver are simulated through any waveform generator and are input to the testedresolver-to-digital converter, and a set of corresponding solving methods for the precision of an output conversion angle of the resolver-to-digital converter are used, the accurate testing of the conversion precision of the resolver-to-digital converter is achieved, and a testing process is efficient and reliable.

Description

technical field [0001] The invention relates to the technical field of electronic equipment testing, in particular to a method for testing conversion precision of a resolver-to-digital converter. Background technique [0002] Resolver-to-Digital Converter (RDC: Resolver-to-Digital Converter) is generally used in an angle measurement system with an autosynchronizer and a resolver as a front end. The self-aligning machine is an inductive micro-motor that uses self-synchronizing characteristics to change the angle of rotation into AC voltage or from AC voltage to angle of rotation. It is generally used as a displacement sensor for measuring angles to realize long-distance transmission and conversion of angle signals. , Receive and Instruct. The resolver is an electromagnetic sensor, also known as a synchronous resolver, which is a small AC motor used to measure angles, used to measure the angular displacement and angular velocity of a rotating object, and consists of a stator ...

AI Technical Summary

Problems solved by technology

However, if the angle converter is to be tested and screened in batches, if a test environment is built using an auto-alignment machine or a resolver, testers cannot control factors such as speed and angle during its rotation. The conversion accuracy is difficult to accurately test and cannot meet the test requirements

Therefore, the detection and screening of the conversion accuracy of the angle converter cannot be completed by relying on the existing technology test method

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