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Aiming at the problem that it is difficult to confirm the parameters of the PID controller and the parameters can not be changed once identified, an intelligent PID control method is proposed. According to the size of the system error, this algorithm controls the system with different subsections of different parameters, by using the particle swarm optimization (PSO) to optimize the parameters of...
A servo control system based on DSP+FPGA structure was proposed in this paper in order to achieve better performances of laser tracking system, meanwhile principles of position detection were introduced in details and the modeling as well as simulation for this system was built. FPGA was implemented in this system to sample the signals from detectors and calculate the values of position and velocity...
Mathematical modeling represents an efficient method allowing us to examine properties of a researched object. This article will present the design of an analytic model of a jet engine (MPM-20 engine in particular) that will be used to set the operational envelope of the engine for further use in a control system that will be limited by this envelope.
A lower limbs rehabilitative training robot was designed to improve walking ability of patients who suffer from impairment in locomotion after neurology injuries or aged persons who lack walking capability. The robot was fixed with four omni-directional wheels which can move within any radius in any direction. When the robot is running, some undetected uncertainty disturbances change its running trajectory,...
This work describes a novel modeling and simulation approach of brushless DC motor control system depended on analysis of it's mathematical model. The brushless DC motor ontology model, the voltage type inverter circuit model, the hysteresis current tracking comparative model and the PID speed controller model were constructed in the Simulink environment of Matlab. S-function was used in modeling...
Firstly the necessity of the design of signal coordination control system in urban main roads is presented , and the design thinking and process of the signal coordination control system is given, then according to the design thinking and process create a model of signal coordination control system in urban main road., and Qingyang Road of LAN Zhou City is taken for example, based on the survey data...
In this paper, a program-controlled current source system which is based on direct digital frequency synthesis technology has been proposed. The system adopts PIC16F877 microcontroller as the control center, chooses the AD9850 chip to achieve the program. Through closed-loop design, software use discrete incremental digital PID algorithm to realize precise control of output current system of small...
In this article, fuzzy control theory is used to solve the robot's obstacle avoidance problem. The inputs and the outputs of the fuzzy logic control system are selected suitably to establish the fuzzy control rules and the fuzzy-controller. Computer simulation results show that, by using this algorithm, the robot can avoid the obstacle accurately, and arrive at the destination quickly.
The design of the voltage loop and current loop of three-phase high power factor PWM rectifier was introduced, the strategy of dual-mode control that combine fuzzy control to PI regulator is proposed, which use fuzzy controller to obtain quick dynamic response when deviation is in small range and adopt PI regulator to realize no static error when deviation is in long range, improving the control accuracy...
In the paper, after researched current usage of RFID in automated storage and retrieval system (AS/RS), based on RFID technology , by using Kingview and some other softwares, including Visual Basic and MS Access, a control system, which can manage information in AS/RS and do storage works automatically for QXLMPS-005/1 AS/RS was established. The main steps of design process were given out. This system...
This paper addresses the H∞ control problem for linear systems where sensors, controllers and plants are connected by a network medium. A novel control scheme is proposed to stabilize an unstable plant by employing a time-varying sampling period method. Furthermore, the method may also compensate packet dropout and network-induced delays. The simulation results illustrate the effectiveness of the...
After this text carries on deep research to the fuzzy controller of routine and PID controller, we know that it is a kind of non-linear controller changed. It has a lot of similarity to PID controller, and then we design a fuzzy PID controller. Fuzzy PID controller is the exactly making of each parameter of the fuzzy controller in the key of comprehensive application that puts in the working range...
In this paper, based on parameter self-tuning fuzzy PID controller, a fuzzy inference method is utilized to realize automatic regulating PID parameter, and the application of the controller in a system is studied with MATLAB. The results of simulation indicate that the controller gives a good control performance and has a high reference value for further applications.
The vehicle control system based on Network communication becomes increasingly complicated recently. The traditional research only focuses on the improvement of network communication quality or system control performance. The network configuration had been carried out to study the vehicle chassis integrated control system. Based on the MATLAB/Simulink and TrueTime Toolbox, the distributed CAN network...
Research and design on the DC servo motor position control system was developed based on the virtual instrument technology. The research focuses on the system configuration, PID controller, data acquisition and the real-time control procedures. An experimental rig has been built, and the test has been carried out. The experiment results show that the system in this paper has more advantages than traditional...
Adaptive cruise control (ACC) system is a Driver assistant system, which can provide safe and comfortable driving. Based on the analysis of ACC system, a parameter self-tuning fuzzy-PID algorithm is developed to design the ACC control strategy. According to the traffic condition, the parameters of PID controller are adapted on-line by fuzzy rule. The simulation results show that the parameter self-...
In this paper, active sliding mode controllers are designed to realize the control and synchronization of fractional-order hyper chaotic systems. Based on stability theorems of fractional calculus, the stability analysis of the proposed method is performed. Finally, three numerical simulations are presented to show the effectiveness of the obtained results. The simulations are all implemented using...
In this paper, the sliding-mode lag synchronization control scheme is proposed based on the neural network to synchronize two different delayed chaotic systems. An integral delayed sliding surface is presented to design the sliding mode control. The lag synchronization controller is achieved by combining the RBF (radial basis function) neural network with sliding-mode control. Numerical simulations...
The proportional plus-derivative control of chaotic system is concerned. Controller is firstly designed and then the controlled stochastic forced brusselator is transformed into its equivalent deterministic one by the Chebyshev polynomial approximation. Finally, the chaotic motions of forced brusselator can be successfully converted to the stable lower periodic orbits by proportional plus-derivative...
In this paper, based on passivity theory, coexistence of anti-synchronization and complete synchronization is found between two identical hyper chaotic Lu systems with different initial conditions. The passive controller is employed to make the error dynamical system not only passive but also asymptotically stable. Numerical simulation results illustrate that the designed controller can realize anti-synchronization...
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