ICALEPCS2013 - List of Authors (Thakur, S.K.)

Paper	Title	Page
THPPC117	A Control Strategy for Highly Regulated Magnet Power Supplies Using a LQR Approach	1334
	S. Srivastava, Y. Kumar, A. Misra, V.S. Pandit, S. Sahoo, S.K. Thakur VECC, Kolkata, India
	A linear quadratic regulator (LQR) based proportional-Integrator-derivative (PID) controller is proposed for the SMPS based magnet power supply of the high current proton injector operational at VECC. The state weighting matrices ‘Q’ of the LQR based controller is derived analytically using guaranteed dominant pole placement approach with desired ‘ζ’ (maximum overshoot) and ‘ω’(rise time). The uniqueness of this scheme is that the controller gives the desired closed loop response with minimum control effort, hence avoiding the actuator saturation by utilizing both optimum behavior of LQR technique and simplicity of the conventional PID controller. The controller and power supply parameter perturbations is studied along with the load disturbance to verify the robustness of proposed control mechanism.

Paper

Title

Page

A Control Strategy for Highly Regulated Magnet Power Supplies Using a LQR Approach

1334

S. Srivastava, Y. Kumar, A. Misra, V.S. Pandit, S. Sahoo, S.K. Thakur
VECC, Kolkata, India

A linear quadratic regulator (LQR) based proportional-Integrator-derivative (PID) controller is proposed for the SMPS based magnet power supply of the high current proton injector operational at VECC. The state weighting matrices ‘Q’ of the LQR based controller is derived analytically using guaranteed dominant pole placement approach with desired ‘ζ’ (maximum overshoot) and ‘ω’(rise time). The uniqueness of this scheme is that the controller gives the desired closed loop response with minimum control effort, hence avoiding the actuator saturation by utilizing both optimum behavior of LQR technique and simplicity of the conventional PID controller. The controller and power supply parameter perturbations is studied along with the load disturbance to verify the robustness of proposed control mechanism.