Lqr Based Pt Plus Pd Controller To Control The Non-Linear Process

In this article the controller architecture of Linear Quadratic Regulator (LQR) based PI plus PD controller is designed and implemented for the level control in the conical tank. The proposed controller have a linear quadratic regulator to tune the gain parameters k(p), k(i) and k(d). The time domain specifications, Integral Absolute Error (IAE) and Integral Square Error (ISE) of level control of nonlinear process obtained using proposed LQR based PI plus PD controller. It is compared with the response obtained with LQR PI controller. The set point tracking experimentation was done with promising results for proposed LQR based PI plus PD controller. The design of proposed controller is very simple and it is effective with very low settling time, IAE and ISE.