Controllable performance system regulator

The concept of time-varying state feedback control of a system under the desired closed loop scate transition matrix is introduced. By setting the parameters or the preset state transition matrix, the time-varying state feedback can be designed. The theorem and design method are derived and an example of motor control withany desired performance can be achieved under the design of time-varying state feedback regular. By the optimal reduced order method, any system with desired performance can be designed in the same way.