Abstract
In this paper, we address the preliminary design considerations to develop a motor-operated valve (MOV) actuator. Both a lead compensator (LC) and a linear proportional-derivative (PD) controller are considered as a tool for controlling the opening and closing of a valve. The LC is designed using the frequency response characteristics to satisfy the given design specifications. The PD controller with a first-order filter in the denominator is optimally tuned so that a genetic algorithm (GA) minimizes an objective function. There is nonlinear saturation in the valve due to its physical structure and the signals applied to the motor are limited. To assess the stability of the overall feedback system when one of the designed controllers is used in operations in a nonlinear section, this study applies Popov’s stability criterion. Simulation works are performed to validate the effectiveness of the proposed methods.
Published Version
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