Analysis and Correction of Doppler Effect Error in Inductosyn

The electrical signal generated by moving objects will produce Doppler Effect and sound and light issued by moving wave source. This phenomenon will change the signal frequency received. It causes not only dynamic measurement errors, and but also makes mistakes in subsequent calculation. According to Doppler Effect principle, this paper discusses the generation mechanism and model of Doppler Effect error in electronic rotation system, and puts forward the correction algorithm realized easily in digital system on the basis of phase-type inductosyn angle measurement system. The algorithm and model have valuable reference for the similar rotation systems and dynamic acquisition systems.