模糊PID控制在直流调速系统中的应用设计说明

模糊控制在直流调速系统中的应用摘 要： 本论文将控制和模糊控制相结合，解决了直流调速系统中转速响应速度慢的问题。在论文中主要针对了电压对传统控制时双闭环直流调速系统性能下降的问题, 提出了模糊控制的方法。这种控制方法主要是根据根据调速系统的偏差 和偏差变化率, 经过模糊逻辑推理,然后对直流电机系统进行调节控制后，系统的动态特性有明显的提高。论文主要针对双闭环直流调速系统进行了仿真分析。为了对直流电机的控制选择出更好的控制方法，本设计中对转速环进行控制，由于在直流调速系统中转速环起主导作用，电流环只是调节电流，所以在设计中将转速环中的调节器用模糊控制器代替，在这两种情况下进行仿真实验。虽然传统控制结构简单，但是转速环控制的情况下，系统达到稳定状态的时间较长而在转速环模糊控制的情况下, 能使系统更快恢复到平衡状态, 且具有更小的转速降。因此,本控制方法能够保证系统具有较好的动态性能。关键词 直流调速, 控制,模糊控制,双闭环ABSTRACT This paper combines PID control and fuzzy control,to solved DC speed-regulating system for speed in slow response problem. Thesis when main voltage to the traditional control in double closed-loop DC speed system performance issues, proposed fuzzy control method. This control method is based mainly on according to the deviation and deviation of rate of change of speed regulating system, through fuzzy logic inference, then adjust the DC motor systems control, dynamic characteristics of the systems has significantly improved. Thesis focused on double closed-loop DC speed-regulating system for the simulation. In order to select better control for DC motor control method, designed to control the speed ring, because of the speed loop in DC speed regulating system play a leading role, current loop is regulating current, so design your speed controller using a fuzzy controller in place of the ring, in both cases conducted simulation experiments. While traditional control structure is simple, the speed c...