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Mini-drone quadrotor altitude control using characteristic ratio assignment PD tuning approach
(2019-01-01)
Chaoraingern, J.
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Tipsuwanporn, V.
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Numsomran, A.
This paper presents PD tuning approach using characteristic ratio assignment (CRA) method for Parrot rolling spider mini-drone quadrotor altitude control system. The aim of this study is to examine the PD controller design and parameter tuning for achieving six degrees of freedom motion control. The CRA technique has been used for determining the proper controller parameters based on the selection of the characteristic polynomial coefficients of the closed loop system conform to the specified the performance criteria. The altitude control simulations applied to Parrot rolling spider mini-drone quadrotor system so that investigated the performance of the proposed controller deign scheme. The results clearly exposed that the control system is fairly stable and out performance, likewise has the effectiveness of controller's parameters adjustability.
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Head loading control for hard disk drive process MRAC technique
(2018-01-01)
Boonpranchoo, V.
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Chaoraingern, J.
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Tipsuwanporn, V.
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Numsomran, A.
Head to disk striking is an essential problem in the servo track writing process caused by less dynamic response control. This paper describes head loading control for the hard disk drive process using model reference adaptive (MRAC) technique, in order to decrease the occurrences of the head striking. The introduced technique, discrete time model reference adaptive has an adjustable control mechanism to decrease the deviation of a system output from the output of the reference model so that increase reference tracking performance. The experiment results implemented in self-servo track writer illustrated that the proposed controller design can achieve the effective control performance comparing with the conventional PID control.
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Chemical dosing control for ultrafiltration water treatment system
(2017-12-13)
Kungwalrut, P.
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Numsomran, A.
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Chaiyasith, P.
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Chaoraingern, J.
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Tipsuwanporn, V.
Chemical dosing is a significant process of water treatment system because it influences on water quality and operational cost. This paper presents a chemical dosing pH control using temporal logic technique for ultrafiltration water treatment system, in order to validate and analyze an appropriate control approach. In this study, a simulation was built in Matlab Simulink, and has been tested with the data collected from a pilot-scale ultrafiltration water treatment system. As stated in the simulation results, the proposed control scheme can achieve the performance specification in pH control.
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Non-linear fuzzy-PID controller design for track following of hard disk drive servo system
(2017-12-13)
Boonpranchoo, V.
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Numsomran, A.
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Chaiyasith, P.
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Chaoraingern, J.
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Tipsuwanporn, V.
This paper presents a non-linear control design scheme for track following control of hard disk drive using Fuzzy-PID controller. The proposed scheme, using a parallel structure combined of non-linear Fuzzy PI controller and Fuzzy PD controller, controls the response of a track following control of hard disk drive system to decrease total of non-repeatable position error (NRPE) and position error signal (PES). A performance verification of the proposed controls was also conducted using HDD benchmark simulation system. Results showed that the non-linear Fuzzy PID controller satisfies an acceptable performance in hard disk drive head track following control and effectively robust to disturbance and process parameter perturbations.
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A PIλDμ controller design for peltier-thermoelectric cooling system
(2017-12-13)
Kungwalrut, P.
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Numsomran, A.
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Chaiyasith, P.
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Chaoraingern, J.
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Tipsuwanporn, V.
This paper describes the fractional-order controller design to achieve stability, performance and robustness of peltier-thermoelectric cooling system modeled as a first-order plus dead-time process which is widely used in a variety of applications. By using the purposed method, the process parameters are estimated from experimental based model identification. Then, the fractional-order controller is designed and optimized by minimizing the function of ISE performance index. Simulation validates theoretical analysis and demonstrates the enhanced performance of the fractional-order controller compared with integer-order.
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The Modified Quadruple-Tanks Process: A Flexible Mathematical Model with an Adjustable Simulink Block
(2014-01-01)
Numsomran, A.
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Chaoraingern, J.
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Trisuwannawat, T.
This paper presents the modified quadruple-tanks process, a flexible laboratory process with an adjustable Simulink block, which is multivariable system consisting of four interconnected water tanks included with lower interacting valve. The new general form of modified quadruple-tanks mathematic model and Simulink block is developed for the advantage of control system analysis and design which can make practical use for many styles of multivariable process by adjusting the value of connected valve resistance, inlet and outlet valve ratio. In this paper described clearly about physical properties of modified quadruple-tanks process, mathematical modeling, transformation of modified quadruple-tanks process, analysis of right half-plane zeros characteristic and controller design for multivariable system. By the several models of transformed modified quadruple-tanks, they can be used to teach students in the skills of multivariable control system analysis and design, understanding control limitation due to interactions, model uncertainties, non-minimum phase behavior, and unpredictable time variations, design decentralized controllers, Implementing decouples to reduce the effect of interactions, and understanding their limitations. © (2014) Trans Tech Publications, Switzerland.
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PID controller design for following control of hard disk drive by characteristic ratio assignment method
(2009-11-01)
Chaoraingern, J.
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Trisuwannawat, T.
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Numsomran, A.
The author present PID controller design for following control of hard disk drive by characteristic ratio assignment method. The study in this paper concerns design of a PID controller which sufficiently robust to the disturbances and plant perturbations on following control of hard disk drive. Characteristic Ratio Assignment (CRA) is shown to be an efficient control technique to serve this requirement. The controller design by CRA is based on the choice of the coefficients of the characteristic polynomial of the closed loop system according to the convenient performance criteria such as equivalent time constant and ration of characteristic coefficient. Hence, in this study, CRA method is applied in PID controller design for following control of hard disk drive. Matlab simulation results shown that CRA design is fairly stable and robust whilst giving the convenience in controller's parameters adjustment.

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