Research of zero-crossing detection technology in linear induction motor

It is useful to adopt sub-power supply in linear motor for high efficiency. Zero-crossing detection technology is usually used in phase and frequency measurement. In this paper, zero-crossing detection technology is firstly applied to track transportation for sub-power supply. The performance of traditional zero-crossing detection technology in existence is compared particularly in this paper, and shortages of traditional methods are also pointed out. A new zero-crossing detection method is proposed in this paper. Simulation and experiment are executed about the new method; the correctness and the feasibility of the new method are validated.