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Discrete Robust PID×(n-2) Stage PD Cascade Controller
Pittaya Pannil,Prachaya Achariyapagon,Thanit Trisuwannawat 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
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 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.
DISCRETE TIME ROBUST INTEGRAL SERVO WITH PID × (n-2)/2 STAGE PDA CONTROLLERS FOR UNSTABLE SYSTEMS
Pittaya Pannil,Prachaya Achariyapagon,Thanit Trisuwannawat 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
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.
NEW REMOTE OPERATION AND MAINTENANCE SYSTEM FOR OFFSHORE PLATFORM APPLICATION
Smornchai Khoonrak,Damnoen Ketpetch,Prachaya Achariyapagon,Sittinon Kongsontana 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
This paper presents a design system for remote operation and maintenance system (ROMS) for offshore platform utilized through Integration of Distribution Control System (DCS), Programmable Logic Controller (PLC) and other Engineering work station. The ROMS was developed to support emergency operation and maintenance by the specialized and experienced people from onshore facilities due to the offshore operation could not be accomplished process operations. The ROMS has evolved handle operation, preventive and predictive maintenance which uses the redundancy secure communication infrastructure utilizing through both satellite and fiber optic from onshore to offshore platform facilities. Moreover, the tested result could be perform that, while emergency evacuation occur in which safety risk evaluated, no human offshore operation is possible.