Pannil, Pittaya

Preferred name

Pannil, Pittaya

Alternative Name

Pannil, P.

Main Affiliation

School of Engineering

pittaya.pa@kmitl.ac.th

Now showing 1 - 10 of 21

Some of the metrics are blocked by your
consent settings
Digital fieldbus-Analog system integration for revamping projects
(2013-01-01)
Thepmanee, Teerawat
;
Pannil, Pittaya
;
Pongswatd, Sawai
;
Rerkratn, Apinai
;
Julsereewong, Amphawan
This paper presents a system integration of modern digital fieldbus and traditional analog devices for revamping projects. Using temperature transmitter with Foundation Fieldbus technology and power regulator with 4-20 mA control input for temperature control based on a PID instruction of programmable logic controller (PLC) is examined as an illustrative case study. A portable plant model was designed and implemented for real hands-on training. In addition, basic network and device configurations as well as ladder logic program and graphical user interface creations are discussed. Experimental results of temperature control in the range of 40-60 °C verifying the proposed concept are also included.
Some of the metrics are blocked by your
consent settings
Posicast PID × (n-2) Stage PD Cascade Controllers for Magnetically-Levitation System
(2017-01-01)
Surintramon, Panupong
;
Pannil, Pittaya
;
Ukakimaparn, Prapart
;
Trisuwannawat, Thanit
When a plant to be controlled is third or higher n<sup>th</sup> order, the PID×(n-2) stage PD cascade controllers are very suitable to be applied for control. To verify the advantages of these controllers, the Magnetically-Levitation plant is then selected as an example of unstable plant to be stabilized and controlled. The design technique is based on placing the controller zeros. The overall controlled system can be approximated as a standard second-order system prompt for designing the Posicast controller to obtain the output response with no overshoot in the last step.
Some of the metrics are blocked by your
consent settings
Discrete-time posicast PID×(n − 2) stage PD cascade controllers for unstable system
(2018-08-01)
Pannil, Pittaya
;
Pool-Em, Kittipat
;
Trisuwannawat, Thanit
;
Ukakimaparn, Prapart
This paper aims to present a discrete-time controller design for a two-degree-of-freedom (2-DOF) control system connected with Posicast function to stabilize an unstable third-order or higher-order plant. The continuous-time controllers used in the 2-DOF control system, the proportional-integral-derivative (PID)×(n − 2) stage proportional-derivative (PD) cascade controllers and the forward controller, are designed by using the Kitti’s method. The Posicast function is used to eliminate an overshoot in step response. Based on the continuous-time controllers designed in the s-domain, the discrete-time controllers with closed-form expression in the z-domain are then calculated by using the bilinear transformation. The magnetic levitation system is employed as an illustrative case study of the unstable plant to be controlled. By comparing the discrete-time system with the continuous-time system, the effectiveness of the proposed discrete-time controller design is verified by MATLAB simulation results.
Some of the metrics are blocked by your
consent settings
Optimal control-based integral servo controller for an overhead crane system
(2015-01-01)
Pannil, Pittaya
;
Kaeojaikla, Phattarapong
;
Trisuwannawat, Thanit
This paper presents an integral servo controller design in order to eliminate the steady-state tracking error of an overhead crane system according to the servo problem. The design technique uses optimal control approach which encourages to achieve the better performance of the controller for overhead crane system. The simulation results show that the designed integral servo controller can eliminate the errors and reduce the settling time of the responses according to the weight for the integral time. How to select the weights for control is also suggested.
Some of the metrics are blocked by your
consent settings
Analysis of macrocycle schedules for an alternative of FF-based feedforward control
(2019-04-01)
Julsereewong, Amphawan
;
Pannil, Pittaya
This paper focuses on analyzing the macrocycle schedules generated for an alternative implementation of Foundation Fieldbus (FF)-based feedforward control with hybrid architecture. The interested alternative control strategy is based on the use of the bias/gain (BG) function block to create feedforward summing function outside a proportional-integral-derivative (PID) function block for use to meet special operation requirements. An FF temperature control loop connected to the DeltaV distributed control system (DCS) providing built-in capability to execute function blocks in an H1 interface card is utilized as a case study to examine the effects of eight different configuration schemes on macrocycle schedules and function block synchronizations. Experimental results obtained from major configuration schemes by placing the PID block in the DCS host controller, the H1 interface card, and the temperature transmitter show that function block allocation affects the control performance to anticipate process disturbance effects.
Some of the metrics are blocked by your
consent settings
Discrete-Time PID×(n-2) Stage PD Cascade Controllers with First Order Hold and Delayed First Order Hold Discretizations
(2017-01-01)
Chiengtee, Channarong
;
Pannil, Pittaya
;
Ukakimaparn, Prapart
;
Trisuwannawat, Thanit
This paper proposes a technique to design the (n-2) stage PD (Proportional-Derivative) controller cascaded with the PID (Proportional-Integral-Derivative) controller in accordance with nth order plants. The Continuous-Time (CT) design is firstly reviewed to show the advantages of the Kitti’s method. The proposed technique is based on the Kitti’s method in combination with the use of First Order Hold (FOH) to discretize the CT plant and Delayed First Order Hold (DFOH) to discretize the CT controller for obtaining the proper Discrete-Time (DT) controller structure. The simulation results confirm that the proposed design technique can be applied to the DT framework with better specifications than it was expected.
Some of the metrics are blocked by your
consent settings
Discrete time robust integral servo with PID × (n-2)/2 Stage PDA Controllers for unstable systems
(2012-12-01)
Pannil, Pittaya
;
Achariyapagon, Prachaya
;
Trisuwannawat, Thanit
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, in case of increasing controller loop gain, the system is still robustly stabilizable with better performance. © 2012 ICROS.
Some of the metrics are blocked by your
consent settings
Discrete robust PIDx(n-2) stage PD cascade controller
(2010-12-01)
Pannil, Pittaya
;
Achariyapagon, Prachaya
;
Trisuwannawat, Thanit
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)x(n-2) stage PD as a cascade controller for a class of n<sup>th</sup> order plant. Both, transient and steady state response specifications are suddenly met when the forward controller is employed. The root loci of this method are shown that the closed loop system is robustly stable with excellence. ©ICROS.
Some of the metrics are blocked by your
consent settings
Discrete-time PIDA controller designed by Tustin's method with and without frequency pre-warping
(2018-06-08)
Ukakimaparn, Prapart
;
Khwunthong, Mathee
;
Trisuwannawat, Thanit
;
Pannil, Pittaya
This paper proposes the formula used for finding the continuous-time PIDA (Proportional-Integral-Derivative-Acceleration) controller's parameters based on pole placement technique. Also, provide the formulas for designing the discrete-time PIDA controllers for both of Tustin's method with and without frequency pre-warping. The designers can use the frequency pre-warping to get the better specification as desired. Moreover, as both of these discrete-time PIDA controllers, theirs transfer functions are proper. Then, they are easy to implement in real-time by the Observable Canonical Form of the difference equations.
Some of the metrics are blocked by your
consent settings
Discrete-time PIDA controller designed by Kitti's method; A third generation
(2017-11-10)
Tongtanee, Anirut
;
Pannil, Pittaya
;
Ukakimaparn, Prapart
;
Trisuwannawat, Thanit
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 in both s-Plane and z-Plane implied that increasing of the open loop gains, the faster and smaller in percent overshoot can be obtained. Comparing among three generations are shown that the third generation of Discrete-Time PIDA controller is the simplest way in design without the difficulty to place the zeros of the controller in z-Plane as in the second generation when the sampling time is too small.

Pannil, Pittaya

Filters

Settings

Sort By

Results per page