Topic
Proportional control
About: Proportional control is a research topic. Over the lifetime, 3756 publications have been published within this topic receiving 49050 citations.
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TL;DR: In this article, the results of a dynamic optimization procedure in the design of load and frequency control (LFC) of power systems are presented, based on the optimal linear regulator theory, accommodated to satisfy the performance objectives of the LFC in large multi-area interconnections.
Abstract: The results of a dynamic optimization procedure in the design of load and frequency control (LFC) of power systems are presented. This design is based on the optimal linear regulator theory, accommodated to satisfy the performance objectives of the LFC in large multiarea interconnections. A proportional-plus-integral control law is considered. The paper also analyzes the influence of system and design parameters on power system performance considering two-and three-area interconnections. Finally, the problems of implementation are discussed.
153 citations
TL;DR: Simulation and experiments on the newly proposed 8/6-pole DSPM machine have shown that the proposed new self-tuning fuzzy PI controller offers better adaptability than the normal linear PI control and that the developed motor drive offers better steady-state and dynamic performances.
Abstract: In a doubly salient permanent-magnet (DSPM) motor drive, it is difficult to get satisfied control characteristics by using a normal linear proportional plus integral (PI) controller due to the high nonlinearity between speed and current or torque. Hence, a new self-tuning fuzzy PI controller with conditional integral, which is performed by a single-chip N87C196KD, is proposed. The initial parameters of the controller are optimized by using genetic arithmetic. Simulation and experiments on the newly proposed 8/6-pole DSPM machine have shown that the proposed new self-tuning fuzzy PI controller offers better adaptability than the normal linear PI control and that the developed motor drive offers better steady-state and dynamic performances.
152 citations
TL;DR: The novel sliding-mode controller is designed in accordance with the trapezoidal velocity profile to guarantee the desired performance and is demonstrated by simulation and experimental results.
Abstract: This paper proposes a particular motor position control drive design via a novel sliding-mode controller. The newly designed controller is especially suitable for the motor incremental motion control which is specified by a trapezoidal velocity profile. The novel sliding-mode controller is designed in accordance with the trapezoidal velocity profile to guarantee the desired performance. A motor control system associated PC-based incremental motion controller with permanent-magnet synchronous motor is built to verify the control effect. The validity of the novel incremental motion controller with sliding-mode control method is demonstrated by simulation and experimental results.
150 citations
01 Sep 1999
TL;DR: In this article, a modified Smith predictor and a simple but very effective controller design procedure is proposed for time delay processes. And the controller has a simple structure whose high performance particularly for unstable and integrating process is clearly shown.
Abstract: A modified Smith predictor and a simple but very effective controller design procedure is proposed for time delay processes. The controller has a simple structure whose high performance particularly for unstable and integrating process is clearly shown. Design of the controllers is based on standard forms of the closed-loop system response with a variable zero and on the optimum stability approach of De Paor and O'Malley (1989) for a proportional controller for an unstable process. Illustrative examples show the superiority of the proposed controller design method over previously published approaches in terms of both closed-loop performance and robustness.
148 citations
TL;DR: It is proved that the proposed method can guarantee global asymptotical stability of the system, and does not use the modeling parameters in the controller formulation, and thus permits easy implementation in practice.
Abstract: High-precision motion of parallel manipulators depends not only on the position accuracy of each actuator, but also on the position synchronization of all actuators. This paper presents a simple synchronized control algorithm for the setpoint position control of parallel manipulators, by incorporating cross-coupling technology into a common proportional-derivative (PD) control architecture. An integrated controller is developed, consisting of a PD control and a saturated proportional-integral (S-PI) control with feedback of the differential position errors amongst actuators (defined as the synchronization errors). The controller can stabilize the motion of each actuator, and meanwhile synchronize all actuators' motions so that both position and synchronization errors converge to zero. The control algorithm does not use the modeling parameters in the controller formulation, and thus permits easy implementation in practice. It is proved that the proposed method can guarantee global asymptotical stability of the system. Experiments conducted on a planar three-degree-of-freedom parallel manipulator demonstrate the effectiveness of the proposed approach.
148 citations