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This paper proposes the design of Discrete-Time PIDA (Proportional-Integral-Derivative-Acceleration) controller. Once, the satisfied PIDA controller in Continuous-Time system is obtained. Then, just discretises it by using trapezoidal approximation or bilinear transformation, the Discrete-Time PIDA controller is easily achieved as well. The root loci of the closed-loop systems are circular shapes...
This paper presents a comparative study of two configuration techniques for building cascade control loops in engineering phase by using traditional analog system and modern digital Foundation Fieldbus (FF) system. For both analog and FF systems, control strategy configurations for providing the process control loop with high safety and the process control loop with high availability are described...
This paper proposes the closed-form formulas used for finding the controllers' parameters for both continuous-time and discrete-time PIDA (Proportional-Integral-Derivative-Acceleration) controllers. The derivations to formulate the formula are given in vector-matrix forms. The examples of usage the closed-form formulas for a third order plant are illustrated. Comparing with other previous research...
This paper proposes the formulas for finding the Proportional gain, Integral gain and Derivative gain simultaneously of the PID controllers in both continuous-time and discrete-time systems. Once, the satisfied PID controller in continuous-time system is obtained. Then, just discretises it by using trapezoidal approximation or bilinear transformation, the discrete-time PID controller is easily achieved...
This paper presents a design method for robustness stability results of unstable systems using forward controller employed to PID × (n-2)/2 Stages PDA Controllers which applied to integral servo problem, both continuous and discrete-time control systems, the root loci of this design method are shown the robustness results with the excellence transient response of this closed loop systems, moreover,...
To obtain the response of sampled system better than of using the Zero Order Hold (ZOH) method. The approximation to the integral using Bilinear discretization is proposed. The results from simulation show that the obtained response from the bilinear or Tustin method is better than the ZOH method at the same sampling time. However, if another of descretization method is necessaries, the overall closed-loop...
This paper presents a new method for designing the PIDA (Proportional-Integral-Derivative-Acceleration) Controller for a third order system. Just changing of the discretization from Zero Order Hold (ZOH) to Bilinear Method, the results from simulations shown that all desired specifications can easily met with better than usual by changing only one parameter.
This paper presents the design of PI controller using Decoupling and CRA technique for quadruple-tanks process. In case of, TITO interacting system such as quadruple-tanks process, the controller designs have been performed ambitiously because interferences between inputs and outputs. With the proposed method, The Decoupling controllers have been used for decreasing the cross coupling between inputs...
This paper presents the approach to design PID controller for a modified quadruple-tank process using inverted decoupling technique. In case of non-minimum phase, TITO system, such as modified quadruple-tank process which can't be controlled by PID controller with standard decoupling technique because the system can't be stabled by saturating manipulate signal. With the proposed method, The inverted...
This paper presents the design of PID controller for track following control of hard disk drive using Coefficient Diagram Method (CDM). For this reason, Track following control of hard disk drive process has many disturbances from internal and external sources, so determining satisfactory controller parameters to stabilize control system and satisfy response specification is difficult. The proposed...
This paper presents the design of PID controller for track following control of hard disk drive using Coefficient Diagram Method (CDM). For this reason, Track following control of hard disk drive process has many disturbances from internal and external sources, so determining satisfactory controller parameters to stabilize control system and satisfying response specification is difficult. The proposed...
This paper presents a design method for discrete-time parallel with continuous-time design for the two degree of freedom (2DOF) control system using PID (Proportional-Integral-Derivative)×(n-2) stage PD as a cascade controller for a class of nth order plant. Both, transient and steady state response specifications are suddenly met when the forward controller is employed. The root loci of this method...
This paper presents the simplest method to design the discrete-time integral servo problem employing PID×(n-2)/2 stage PDA controllers for unstable systems. The results from simulation shown that even the discrete integrator is not introduced the unit impulse responses are easily satisfied differ from the case of continuous-time that necessary to be introduced. In addition, just increasing only the...
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