and susceptibility to disturbances of reheated-steam temperature
a predictive control scheme was proposed to improve its control performance based on the equivalent input disturbance (EID) approach. A state observer and an EID estimator were devised to estimate an equivalent signal of a disturbance on the control input channel. Due to the phase lag caused by the time delay
the estimate cannot be used for real-time compensation. A disturbance predictor was designed to produce a prediction of the disturbance based on Taylor series theory. As a result
the prediction instead of the estimate of a disturbance was employed for the compensation on the control input channel. A new predictive scheme was proposed to obtain future information on the system state based on the plant model. A state feedback control law was designed using the future state. The control system was divided into two subsystems including disturbance attenuation and tracking control
thereby obtaining the stability criteria and design procedure. Simulation results show that the proposal can achieve the satisfactory performance of control accuracy and anti-disturbance.
关键词
Keywords
references
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