SYSTEM AND METHOD FOR CONTROLLING TARGET TO BE CONTROLLED OF TIME-VARIANT SYSTEM HAVING IDLE TIME

摘要

PROBLEM TO BE SOLVED: To control a target to be controlled of a time-variant system having idle time with good precision.;SOLUTION: Set values expressing the idle time of the target 200 to be controlled, time constant, and process gain are previously set. The set value of the process gain has a predetermined time-variant property. Output value y and its first and second order time differential values are used as the state variable x of the target 200 to be controlled. A nonlinear state estimator 206 estimates the value x(t+Ld) of the state variable x at a future time point after the idle time from present time based on the present output value y and the set values of the idle time, the time constant and the process gain. A gain scheduled sliding mode controller 212 performs a gain scheduled sliding mode control operation based on the estimated value of x(t+Ld) of the state variable x at the future time point, the output deviation z(t+Ld) at the future time point, and the set values of the time constant and the process gain at the future time point so as to determine the operation quantity u_T to the target 200 to be controlled.;COPYRIGHT: (C)2007,JPO&INPIT