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分数阶PID控制器的研究与仿真 被引量:6

A research and simulation of the PID controller with fractional order
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摘要 为了提高整数阶PID控制器的控制精度,将控制器的阶次推广到分数阶领域,可得到分数阶PIλDμ控制器模型。借助一种数字实现形式,在时域中直接运用z变换方法,可计算分数阶PIλDμ控制器。对实例的仿真结果表明,分数阶PIλDμ控制器具有更佳的控制效果,分数阶次的合适选取对控制质量的改善明显。控制器对系统参数的变化不敏感,结构更灵活,鲁棒性也更强。 To improve the accuracy of integer order PID controller,a fractional order controller with a digital implementation is proposed.In the time domain,the proposed controller can be computed with z-transform method directly.Simulation results show that,the fractional order controller is not sensitive to the changes of the system,and besides,it has good control effectiveness,flexible structure,and strong robustness.
作者 张弘
出处 《西安邮电学院学报》 2011年第1期107-110,共4页 Journal of Xi'an Institute of Posts and Telecommunications
关键词 分数阶微积分 分数阶控制器 数字实现 PID控制 fractional calculus fractional order controller digital implementation PID control
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