Performance-assessment of a weigh feeder using steady-state predictive output

The present study discusses a design method for controlling a weigh feeder. In the present study, a designed control system is assessed, and the control parameters are updated such that the control performance is improved. The proportional-integral (PI) control law is used to obtain a practical control system in industry. In the control system of a weigh feeder, since the steady-state response is more important than the transient response, the PI parameters of the PI control law are decided based on generalized minimum variance control with steady-state prediction (GMVCS). In the design of GMVCS, steady-state prediction is used instead of dead-time ahead prediction, and hence the steady-state control performance is superior to that of conventional methods. Finally, the effectiveness of the proposed method is demonstrated through experimental results.