PID parameters are seek to correct valve-controlled motor system., to reflect actual conditions truer dispersed artificial model is set up with valve-controlled motor for the example.

Firstly, we use norm theory to research the controlled chaotic systems and lead to some sufficient conditions for system convergence and the choice of state feedback gain matrixes.

The application of the commutation system is controlled by some conditions. The substantial condition of the application of commutation system is the release of the personal danger.