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This paper proposes a particular method for position velocity loops to solve the velocity control problem associated with conventional sliding mode control of permanent magnet synchronous motor (PMSM) servo system. The merits of conventional sliding mode control approach and PID control technique were introduced to design this novel controller for the position and velocity loops. The sliding mode...
Constant pressure water supply system is a complex time-delay system which makes it difficult to ensure the good control performance and fast response in the working condition for traditional PID control. This paper presents a speed control system of constant pressure pump unit based on fuzzy self-tuning PID control strategy which can realize parameter tuning of PID real-timely. According to a real...
The measurement of parameters for obtaining the mathematical model of the Level process station has to make accurately so as to obtain satisfactory performance of the system. The subject of this paper is concerned with the precise level control of a Level process station. The mathematical modeling of the system is done and control law for fuzzy and fuzzy immune PID is established. The Simulink of...
A buck converter with a digital controller is modeled analytically and compared to laboratory measurements and simulation results. These models will help the practicing engineer in understanding the new digital controllers. This presentation provides engineers less familiar with digital control some tools and insight into how to characterize the behavior of these systems. The models are validated...
A novel control strategy of Fuzzy-Immune PID based on PSO is proposed in this paper. The strategy learns from the immune feedback principle of biological immune system and takes advantage of the good approaching ability of fuzzy control to achieve nonlinear function of the immune controller, and then the PSO algorithm is used to optimize parameters of PID controller and immune controller. Apply the...
This paper shows a strategy for the fuzzy logic control system using an offline simulated ball mill grinding approach. In this study, a step change in the force reference signal is considered a disturbance. The current study focuses on the design and implementation of a fuzzy logic control system for product flow rate of ball mill grinding process. The performance of the system is analyzed by simulating...
Aiming at a complicated coupling and non-linear brushless DC motor (BLDCM) servo system, the conventional algorithms have many disadvantages, such as less precision, lower speed response. Taking the mechanical characteristics of BLDCM into consideration, an improved particle swarm optimization algorithm is presented in this paper, which is applied in the speed control of the Brushless DC Motor (BLDCM)...
A study is presented on the application of particle swarm optimization (PSO) to design intelligent autopilots for ship steering. Two versions of PSO-conventional and anti-predatory (APSO) - have been used. The autopilot consists of a fuzzy logic controller (FLC) emulating the characteristics of manual ship steering. The parameters for the FLC are optimized using PSO and APSO. The robustness of the...
Addressing to the difficulties in PID parameter tuning, low accuracy in temperature controlling and the dissatisfaction in high exactitude extrusion processing of the present PID controllers, a new kind of PID controller based on RBF neural network is proposed. It can not only obtain a higher accuracy in temperature controlling, but also infinitely approach the nonlinear system with quicker and more...
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