Weigh feeder control using a performance-adaptive PI controller

In design of a weigh feeder control system, most controllers employed in industry are designed using proportional and integral (PI) compensations, and it is desirable to achieve high performance by PI control. Hence, a generalized minimum variance control (GMVC)-based PI control system is designed for a weigh feeder, and the design parameters of GMVC are adjusted on the basis of control performance. Because the GMVC-based PI control is based on control performance, the proposed method can be easily adopted in industry. An experimental result demonstrates the effectiveness of the proposed design method.