摘要
在过程控制领域,SOPDT模型具有广泛的适用性;针对其时滞特性,提出了一种智能采样变比例PI控制器,通过智能采样环节来补偿被调过程的时滞特性,通过变比例控制器来加快调节过程;智能采样可容忍的最大控制偏差值由仿真实验确定,此处取为7;变比例模型经仿真和现场实验得到;利用Matlab进行程序编制和仿真;仿真结果表明,智能采样变比例PI控制器在对SOPDT对象进行控制时具有较小的超调量、较短的过渡时间,抑制干扰能力强,并且具有一定的鲁棒性,是一种性能优越的控制器。
In the process control field, the SOPDT process is very common. Because of its time--delay features, a new intelligent sam- pling variable proportion PI control strategy is proposed. It compensates the time--delay features by intelligent sampling unit and speeds up the adjustment process by variable proportion PI controller. The tolerable maximum control--deviation of intelligent sampling is determined by simulation experiment, here is 7. The model of variable proportion is obtained with simulation and field experiment. Programming and simulation is carried out by Matlab. The computer--simulation results demonstrate that the intelligent sampling variable proportion PI con- troller for SOPDT process has a slight overshoot, fast response, strong anti--jamming ability and good robustness.
出处
《计算机测量与控制》
北大核心
2013年第7期1822-1824,共3页
Computer Measurement &Control
基金
国家自然科学基金资助项目(61102089)
湖南省科技计划资助项目(2010gk3018)
湖南省教育厅科研资助项目(10C1087)
关键词
二阶加滞后对象
智能采样
变比例
比例积分控制器
second--order plus dead--time process
intelligent sampling
variable proportion
PI controller
