Design of Weigh Feeder Control System for Energy Saving Using Performance-Adaptive Method  

作　　者：Takao Sato Shohei Kitano Toru Yamamoto Nozomu Araki Yasuo Konishi 

机构地区：[1]Graduate School of Engineering, University of Hyogo, Himeji 671-2201, Japan [2]Graduate School of Engineering, Hiroshima University, Hiroshima 739-8527, Japan

出　　处：《Journal of Mechanics Engineering and Automation》2012年第1期1-8,共8页机械工程与自动化（英文版）

摘　　要：This paper discusses a design method for the control system of a weigh feeder that supplies powder and granular material at a constant rate. Most weigh feeders employed in industry are controlled by proportional and integral （PI） compensation, and the control performance is decided by the selection of parameters. To attain advanced control performance by PI control, the PI parameters are designed on the basis of generalized minimum variance control （GMVC）. In this study, to achieve user-specified control performance by GMVC-based PI control, the design parameters of GMVC are automatically adjusted using a performance-adaptive method. The control performance discussed in this study consists of the variance of the control error and that of the difference in the control input. In a conventional performance-adaptive method, the variance of the control error is reduced. In this study, to reduce energy consumption and to achieve user-specified control performance, the variance of the difference in the control input is specified and the design parameter is determined. To demonstrate its effectiveness, the proposed method is applied to an actual weigh feeder.

关 键 词：Weigh feeder performance-adaptive PI （proportional and integral） control generalized minimum variance control energy saving. 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TP273[自动化与计算机技术—计算机科学与技术]