Pneumatic control valves are still the most used in process industries due to their low cost and simplicity. This paper presents a design procedure of a PID controller for a pneumatic control valve. For comparison, P and PI controllers are also utilized for the control valve. The bond graph method is used to model the control valve, in order to compare the response characteristics of the valve....

Abstract: This paper presents a new method for a PID-control design in which the PID-control loop is represented as an equivalent one to a control loop operating with an optimized PI-controller and a Smith predictor. It requires the nearest approximation of the power plant process description and the dead-time transfer function. The presented method is based on the PID-controller transfer funct...

Abstract: The control of liquid level in tanks and flow between tanks is a basic problem in the process industries. Almost all theprocesses in the industries are non-linear in nature. Designing a controller for a nonlinear process is an important problem. The problem of level control in interacting tank processes are system dynamics and interacting characteristics. In interacting process, dynam...

Abstract— This paper presents a comparative analysis of speed control in brushless DC motor (BLDC motor) using proportional-integral (PI) controller and Fuzzy logic controller (FLC). The controllers were analyzed under no load and loaded condition of the motor. The various parameters such as settling time, peak over shoot, steady state error, and mean square error were calculated and compared f...

The excitation control of synchronous generator in a single machine to an infinite bus (SMIB) power system is very important to improve the stability modes of power system. In addition to the usual or conventional excitation control techniques and speed governors, other devices proved its effectiveness to enhance better system stability like power system stabilizers (PSS) and static VAR compens...

In order to emulate a DC motor control, vector control strategy is employed to decouple flux and torque of an induction motor. The great advantage of this technique is that the induction motor can be controlled with the presentation of all of its properties such as high efficiency, robustness, low maintenance cost. The most widely employed controller is the conventional proportional integral (P...

In the present work a new controller called Particle Swarm Optimization (PSO) based state feedback gain (K) controller has been proposed for frequency regulation of a two area system and then its performance is compared with earlier designed controllers such as Linear Quadratic Regulator– Proportional Integral (LQR-PI) controller and Integral controller. The performance comparison has been done...

A proportional-integral (PI) controller and a sliding mode controller (SMC) are used to control a fourth-order Boost-Boost (BB) converter in continuous conduction mode with two input switches and two output voltages. Based on the equivalent control method, a closed-loop system is developed. The resultant PI gains have a nonlinear relationship with each other. The appropriate PI gains are obtain...