基于双模糊控制器的水箱液位控制

摘要

针对工业锅炉自动控制系统中的水箱系统液位控制问题,提出基于模糊控制器的基础上,设计实现一种双模糊控制器.根据输出信号的误差大小分别利用两个模糊控制器进行控制,控制结果传递给调节器,以实现水箱水位不变.从仿真结果来看,双模糊控制器有效地减小了系统稳态误差,响应时间、超调量、稳定时间等性能优于传统的PID控制.%In order to solve the question of liquid level control in boiler system, a new kind of double fuzzy controller is designed in this paper. Two fuzzy controllers were used separately according to actual error signal of the system output, the output was transferred to adjuster for a constant liquid level. Compared with normal PID controller and fuzzy controller, the results show that the double fuzzy controller can reduce steady-state error of the plant, other characteristic such as settling time,speed of response and overshoot are also prior to normal PID controller.