Topic
Open-loop controller
About: Open-loop controller is a research topic. Over the lifetime, 16148 publications have been published within this topic receiving 224014 citations. The topic is also known as: non-feedback controller & open-loop control law.
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TL;DR: In this paper, three active vibration controller design methodologies include the reduced modal controller, the classical and the robust H∞ controller for the high-speed flexible linkage mechanism systems with piezoelectric actuators and sensors are investigated.
52 citations
TL;DR: General type-2 fuzzy logic sets and the modified harmony search algorithm techniques for adaptive tuning of the most popular existing proportional–integral (PI) controller is integrated in order to address uncertainties in the control of electrical vehicles.
Abstract: The control of electrical vehicles (EVs) should be designed robustly and adaptively to improve the system on both dynamic and steady-state performances, because EV systems are basically time variant (e.g. the operation parameters of EV and the road condition are always varying) that make the operation of controlling an EV difficult. In this study, general type-2 fuzzy logic sets and the modified harmony search algorithm techniques for adaptive tuning of the most popular existing proportional–integral (PI) controller is integrated in order to address these uncertainties. Although it is computationally expensive to carry out general type-2 fuzzy systems, it can be examined as a composition of several interval type-2 fuzzy logic systems with a corresponding level of α for each by using a new plan which is presented, general type-2 fuzzy set. The controller uses the linguistic rules directly. The achieved results are compared with optimal fuzzy-PI controller and optimal interval type-2 fuzzy-PI controller results which are the most recent researches into in the present issue to evaluate the proficiency of the proposed controller. The simulation results demonstrate the successfulness and effectiveness of the proposed controller.
52 citations
16 Oct 2006
TL;DR: In this article, an adaptive parameter tuning of a power oscillations damping (POD) controller for the thyristor controlled series compensator (TCSC) is described. And the adaptive control is based on pole shifting.
Abstract: This paper describes an adaptive parameter tuning of a power oscillations damping (POD) controller for the thyristor controlled series compensator (TCSC). The adaptive control is based on pole shifting. In order to maintain good damping over a wide range of operating conditions, the parameters of the POD controller are adapted on-line, based on the measured system input and output. Simulation results are provided to demonstrate the effectiveness of the proposed controller.
52 citations
Patent•
04 Oct 1985
TL;DR: In this article, a microprocessor based motor controller which provides open loop speed control at low conduction angles, closed loop speed controlled at high conduction angle, and a smooth transition between open loop and closed loop zones is presented.
Abstract: A microprocessor based motor controller which provides open loop speed control at low conduction angles, closed loop speed control at high conduction angles, and a smooth transition between open loop and closed loop zones. In open loop, the motor speed is selected and is permitted to vary with applied load. In closed loop, the motor speed is held constant, substantially irrespective of load. In the transition zone, the motor is operated in a hybrid open loop, closed loop fashion. Anti-kickback protection is also provided based on a percentage change in the motor's rotational period.
52 citations