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从系统的组成、算法研究、软件设计、系统调试4个方面对水槽液位控制系统进行了详细的设计与阐述。系统组成从水槽液位控制系统出发,从总体上对水槽液位控制系统的硬件结构、各种对象的选择、系统连线等进行了全面设计。上位机通过TwinCAT软件设计出适合于水槽水位控制的最佳程序,其中,最关键的部分是PID控制算法的设计。对常规PID算法进行了深入研究,并且对参数整定进行了详细介绍。同时针对常规PID算法存在的不能根据被控对象参数的变化作出动态调整的缺陷,又设计出了参数自整定模糊控制器。最后对设计好的系统进行调试、监控,获得满意的动态、静态特性和人机界面。
From the aspects of system composition, algorithm research, software design and system commissioning, a detailed design and elaboration of the tank level control system is carried out. The system consists of the tank level control system, overall design of the hardware structure of the tank level control system, the selection of various objects, the system connection and so on. PC by TwinCAT software designed for the best water level control tank, of which, the most critical part is the PID control algorithm design. The conventional PID algorithm is studied in depth, and parameter tuning is introduced in detail. At the same time, aiming at the defect that the conventional PID algorithm can not dynamically adjust according to the change of the controlled object parameters, a parameter self-tuning fuzzy controller is designed. Finally, the design of the system debugging, monitoring, access to dynamic, static characteristics and human-machine interface.