外文翻译-单容水箱液位模糊控制系统设计.doc

英 文 翻 译 系 别 自动化系 专 业 自动化 班 级 学生姓名 学 号 指导教师  Single tank water level fuzzy control system design In industrial process control, the amount usually charged with the following four kinds, namely, level, pressure, flow and temperature. Where in the liquid is not only common in industrial process parameters, and for direct observation, easy to measure. Level control is a common industrial process control, impact on production can not be ignored. For level control system, although the conventional PID control parameters fixed, it is difficult to ensure the control parameters of the system to adapt to changes and changes in working conditions, it is difficult to get the desired effect; fuzzy control parameters have not sensitive and robust and strong features . Single-tank liquid level control system with linearity, hysteresis, coupling characteristics, this paper for the study of the level system, the application of fuzzy control theory to control research. Single tank water system structure Tank level control system consists of a single tank water system ontology and AD / DA data acquisition card and other components, allows the computer to set the level value by controlling the regulator, at the entrance of a regulator valve to control and maintain the water level does not change; valve at the outlet of the receiver D-A converter output signal directly controlled tank. Valves on the inlet and discharge control rely on typical self-balancing system. Fuzzy Control Fuzzy logic control referred to fuzzy control, based on fuzzy set theory, fuzzy linguistic variables and fuzzy logic of a computer-based digital control technology. In 1965, the United States LAZadeh founded the fuzzy set theory; 1973 he gives definitions and theorems related to fuzzy logic control. In 1974, the British EH Mamdani first statement in accordance with the composition of fuzzy control fuzzy controller, and apply it to the control of boilers and stea