Total sliding mode speed synchronization control of multi induction motors

The system of one hydraulic displacement pump driving two hydraulic displacement motors to achieve speed synchronization is a multiple inputs and multiple outputs one with coupling and nonlinear characteristics.

For quality of the yarn, the new developed computer control system of FA 425 fly frame has to accurately keep the speed synchronization between flyer motor and rolling motor in the process of start, work and stop of the two motors.

Multi-motor synchronization variable speed drive of dyeing and printing machines without dancers and tension sensor;

In this algorithm,each earth station first estimates the carrier frequency offset of the received network management broadcast channel,and then estimates the frequency of the reference source of each station and the LO frequency of satellite transponder,and finally,open loop frequency compensation is added to the transmitter or the receiver to achieve fast synchronization of the communication si.