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The way of modeling and simulation for Active-Disturbance-Rejection-Controller (ADRC) is discussed by masking subsystem and building user custom library in Matlab/Simulink, after studying the basic principle and structure of ADRC. In this way, the programming workload of researching ADRC can be reduced, and the complex blocks group in Simulink can simplify. The simulation example and results show...
In some industrial process control systems with time delay, the delay-time is constantly changing due to various reasons (eg. the variation of pneumatic pressure). Thus the delay-time is a bounded perturbation parameter in the system. Such industrial process control systems are a kind of non-linear control systems with bounded parameter-perturbation. Reference [1~4] put forward a new stability criterion...
A novel T-S fuzzy control algorithm is presented for active queue management(AQM) in order to solve the problem of congestion control in TCP communication. This kind of control action has robust performance, which is suitable for time varying and complex network systems. For the particular TCP network mode, a T-S fuzzy model is done for the nonlinear TCP/IP network congestion control system. The performance...
Electric Power Steering (EPS) systems have many merits over traditional hydraulic power steering systems in fuel economy, variable assist capabilities and favorable road feeling by virtue of adjustment assist characteristic with adopting assist motor in replacement of hydraulic pump. This paper aims at modeling the mechanical parts, the assist motor and electronic control unit by bond graph technique...
The big inertia torque will be produced, and the speed-adjusting system performance will become bad, when the brushless direct current motor (BLDCM) starts, speeds up and down with the greater inertia load. In order to solve this kind of problem, a fuzzy-PI control scheme combined fuzzy logic strategy and traditional PI control method was presented in this paper, and the simulation experiments of...
We adopt multi-point planning method based on cubic spline function to perform parametric design of dynamic walking. The objective of optimization is to achieve maximum ZMP stability and minimum joint driving torque, together with the combination of multi-objective genetic algorithm to optimize the gait parameters. Simulation verification has also been carried out in ADAMS and Matlab after optimization...
The operation principle of peak current mode control H bridge converter was analyzed. It can observe nonlinear phenomena in H bridge converter after simulating to the model, which builds by the concept of binary logic variables using Matlab/Simulink. According to the characteristics of H bridge converter, a time-delayed feedback control method was applied to suppress the chaos behavior of H bridge...
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...
Based on the analysis of the steering performance, the objective of this paper is to present evidence for the tractor adopted the four-wheel steering (4WS) which can improve the handling and stability of tractor semi-trailer. The simplified single track model with 3 DOF for 4WS tractor semi-trailer has been constructed for dynamic simulation through time-domain response on the two states of small...
In recent years, studies about control methods for complex machines and robots have been developed rapidly. Biped robots are often treated as inverted pendulums for its simple structure. But modeling of robot and other complex machines is a time-consuming procedure. A new method of modeling and simulation of robot based on SimMechanics is proposed in this paper. Physical modeling, parameter setting...
Bionic undulating fin is a new bionic underwater propulsor based on propulsive mode of undulating fin which has high propulsive efficiency, maneuverability and stability. The structure and locomotive model of the bionic undulating fin system were analyzed, and a control system which fits several undulating modes was put forward in this paper. Locomotion simulation was done based on the Matlab/Simulink...
A new stability criterion based on numerical computing and simulation for nonlinear time-invariant systems is presented. It provides a standard and simple way to construct the energy-like function. The relevant proof has been given to justify this stability criterion. In the environment of MATLAB, this method is successfully applied on a practical industrial process control system with time-delay...
A new method to develop automobile's anti-lock braking system is presented under MATLAB software condition. First, a single wheel automobile model and an arrester model are established. Then, several sub modules of anti-lock braking system (ABS) are established, that is slippage rate calculating module, wheel supporting force module, road surface input module and full automobile module. Finally, the...
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