Ali Ahmad, Majhi Somanath
Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India.
ISA Trans. 2009 Jan;48(1):10-5. doi: 10.1016/j.isatra.2008.09.002. Epub 2008 Oct 9.
In this work, the normalized Internal Model Control (IMC) filter time constant is designed to achieve a specified value of the maximum sensitivity for stable first and second order plus time delay process models, respectively. Since a particular value of the maximum sensitivity results in an almost constant percentage overshoot to controller setpoint change, an empirical relationship between the normalized IMC filter time constant and percentage overshoot is presented. The main advantage of the proposed method is that only a user-defined overshoot is required to design a PI/PID controller. Simulation examples are given to demonstrate the value of the proposed method.
在这项工作中，归一化内模控制（IMC）滤波器时间常数的设计分别是为了使稳定的一阶和二阶加时滞过程模型达到指定的最大灵敏度值。由于最大灵敏度的特定值会导致对控制器设定值变化的超调百分比几乎恒定，因此给出了归一化IMC滤波器时间常数与超调百分比之间的经验关系。该方法的主要优点是设计PI/PID控制器仅需要用户定义的超调量。给出了仿真示例以证明该方法的价值。
