Research on Synchronous Control in Dyeing Systems Using Fuzzy-Extension Strategies

Multi-motor synchronous transmission is a crucial technology in dyeing control systems. When the current system suffers from sudden unpredictable, uncertain or nonlinear changes, the traditional adaptive control method will fail to fulfill the task of synchronous control. A new fuzzy-extension control strategy, which combines fuzzy theory and the extension concept, is proposed here to solve this problem. With this method, two controllers are employed in the system simultaneously-the fuzzy controller is used to deal with gradual time-variant situations (i.e. quantitative change) while the extension controller is responsible for sudden time-variant situations (i.e. qualitative change). The designed fuzzy-extension controller can switch its mode of control through an intelligent switch. The experimental results demonstrate that the proposed controller has satisfied performance requirements.