This paper describes a slip frequency vector control system of induction motor using chip microcomputer MCS-51. A structure with parameter adaptive compensation is analysed and designed.

As the adaptive feedforward control method used for active control of periodic vibration has many shortcomings, an adaptive feedback control method was proposed based on on-line frequency estimation.

The drive circuitry of the silicon micromachined gyroscope based on adaptive control is investigated. The coherence of two vibratory modes is achieved utilizing adaptive tuning at a given frequency.