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RISS 인기검색어
- 검색키워드
- 저자 : Muhammad Shamrooz Aslam (검색결과 3 건)
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H∞ Control for Network T-S Fuzzy Systems under Time Varying Delay for Multi-area Power Systems
Muhammad Shamrooz Aslam,Xisheng Dai 제어·로봇·시스템학회 2020 International Journal of Control, Automation, and Vol.18 No.11
This paper investigates the problem of Load Frequency Control (LFC) and proposes a new eventtriggered scheme for T-S Fuzzy control (TSFC) with the time-varying delay in multi-area interconnected power systems. First, we establish the mathematical model of the three-area interconnected power system. Second, a delay fuzzy-based controller is constructed by considering the same premises as in controller, and then an event-triggered scheme is considered to mitigate the effect of communication burden. Another derives of this paper are implemented to examine the prescribed H∞ or energy-to-energy performance index of the closed-loop power system. Furthermore, in this regard, by taking into account a new version of fuzzy Lyapunov-Krasovskii functional (LKF) in conjunction with free weighting matrices, containing mode-dependent non-integral term such that the resulting system is stable with the desired performance. Then, the desired Fuzzy controller is presented in the account of LMI. Finally, we validate the feasibility and the effectiveness of our results with a Three-area power systems example.
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Dynamic Stability Enhancement Using Fuzzy PID Control Technology for Power System
Khaled Eltag,Muhammad Shamrooz Aslam,Rizwan Ullah 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.1
This article presents Fuzzy Particle Swarm Optimization of PID controller PSO-FPIDC used as a ConventionalPower System Stabilizer CPSS to improve the dynamic stability performance of generating unit duringlow frequency oscillations. Speed deviation Δw and acceleration Δw˙ of synchronous generator are taken as inputto the PSO-FPIDC controller connected to Single Machine Infinite Busbar SMIB system. This controller examinedunder different perturbation scenarios. The dynamic performance of the PSO-FPIDC is compared with theFuzzy Teacher Learner Based Optimization PID TLBO-FPIDC, PSO-PID, TLBO-PID and optimal parameters ofconvectional Power System Stabilizer CPSS. The results show that the performance of PSO-FPIDC has small overshoot/undershoot and damp out lower frequency oscillations very quickly as compared to other controllers.
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Robust Adaptive Control of Robotic Manipulator with Input Timevarying Delay
Saim Ahmed,Haoping Wang,Muhammad Shamrooz Aslam,Imran Ghous,Irfan Qaisar 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.9
This paper presents H∞ adaptive tracking control of uncertain robotic manipulator with unknown externaldisturbances and input time-varying delays. The new adaptive scheme is proposed for trajectory tracking, while H∞ performance is used to attenuate the effect of external disturbances. Firstly, a delay-dependent sufficient condition with input delay and the proposed adaptive controller are developed for the uncertain robotic manipulator, such that the resulting closed-loop system is robustly asymptotically stable. Secondly, a sufficient condition for the H∞ disturbance attenuation performance of the closed-loop system is derived, consequently, the system is robustly asymptotically stable. In the end, two examples are presented to verify the effectiveness of the proposed method.
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