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The paper firstly establishes a port-controlled Hamiltonian dissipation (PCHD) based model of a direct-drive permanent magnet synchronous generator (D-PMSG). A new double loop control of the D-PMSG is proposed with the outer speed loop controlled by a non-singular higher-order terminal sliding mode (NHTSM) controller to undertake maximum wind power point tracking (MPPT). In the inner current control...
The simple adaptive-robust control algorithm for time-invariant uncertain linear plants is proposed. Only scalar input and output of the plant are available for measurement. Algorithm provides tracking of a plant output to a reference signal with required accuracy. Simulations results illustrating an efficiency of proposed scheme are presented.
An Active Disturbance Rejection based solution is proposed for the position control of a standard inverted pendulum system, demonstrating a largely model independent design that is distinctly different from existing model-based designs from classical as well as modern control theory. The quality of the control loop is further improved with a unique double disturbance observer design, which rejects...
This paper presents a controller synthesis method to stabilize piecewise-affine (PWA) slab systems based on invariant sets. Inspired by the theory of sliding modes, sufficient stabilization conditions are cast as a set of Linear Matrix Inequalities (LMIs) by proper choice of an invariant set which is a target sliding surface. The method has two steps: the design of the attractive sliding surface and...
With the rising cost of traditional energy, alternate sources of energy like wind energy are being looked into. This ample source of renewable energy is widely distributed, cheap and also helps in reducing toxic gas emissions. Although, wind energy is one of the renewable sources of energy, there are certain constraints which pose a challenge in using it to its full potential. Higher wind speeds will...
The perpendicular maneuver under water of submarines is a complex multivariable system with coupling. the depth and pitch control system of submarine is difficult to design for the coupling relationship between the bow elevator and stern elevator. the submarine nonlinear model on the vertical is simplified according to the simulation needs. the bow rudder auto disturbance rejection controller (ADRC)...
In this paper, the partial feedback linearization was made for the non-linear model of the triple inverted pendulum, by means of the differential geometry. Then the simulation and analysis of tracking control and interference control were made, which combined with the human simulating intelligent control and LQR control in the system. The results show that the human simulating intelligent control...
This paper deals with the operation principle of the oil-fuel supply system used in supersonic combustion wind tunnel based on variable frequency speed-regulating technology. The mathematical model which describes the characteristics of the system by analyzing the characteristics of all aspects of the system has been established. According to the flow control requirements and the mathematical model,...
Taking the small unmanned four-rotor as a research object, the dynamic model of the small four-rotor was built according to Newton-Euler formaLism. Adaptive Inverse Control (AIC) Theory was used in the control of the small unmanned four-rotor for the first time and the attitude stabiLization control of the small unmanned four-rotor was reaLized on the experimental platform. The simulation results...
This paper describes the fuzzy logic based robust pole-placement controller for the buck converter working in Continuous Conduction Mode (CCM). The converter operates at a switching frequency of 500 KHz. Pole-placement controller does not show good robustness to the load variations and the change in supply and reference voltages. In order to improve the static and dynamic properties, pole-placement...
In this paper, an improved parameters tuning method of model-driven two degree of freedom PID control system has been proposed to enhance the control performances of a PID controlled system. Known for its ability of stabilizing the unstable processes, fast tracking to the change of set points and rejecting disturbance, the model-driven two degree of freedom PID — so called MD TDOF PID has gained research...
This paper presents a new state feedback adaptive controller for the ball and beam system. The proposed controller is compared to the adaptive backstepping controller. First, the controller equations are obtained from the system linear model around the equilibrium point. Next, controller performances are evaluated in simulation using the system linear and the nonlinear models. The simulation results...
In the article balance platform model will be presented, which in further part serve for leading simulation testing series. Because this type of mechanisms are mostly used in the posturoghaphy examinations, which rely on compensation movements registering performed in the straight posture so in the article authors concentrate on system consisting movable plate which moves in two directions x and y...
The paper describes one of possible approaches to control of multi-variable control loop. In this case the so called main controllers, binding members and correction members are used for this one. Simulation verification of designed method of control is presented on three-variable control loop of steam turbine.
In this paper a novel orthogonal 6-DOF (Degree Of Freedom) parallel robot with redundant actuation is studied as an earthquake motion simulator. Taking the practical simulation of earthquake waves into consideration, we firstly analyze the general characteristics of natural earthquakes. Complexity and variety of seismic waves, 3-dimension and multi-DOF movement and strong devastating force are regarded...
The permanent magnet synchronous motor (PMSM) is increasingly playing an important role in alternating current(AC) transmission system. Recently, lots of researches have been investigated for the PMSM system without speed and position sensors. The Vector-control system based on fuzzy self-tuning PID is proposed in this paper. The new algorithm based on fuzzy self-tuning PID can improve the performance...
The mathematic model and MATLAB/SIMULINK simulation model of the hydraulic press's moving crossbeam were set up based on anlyzing of force acted on 800MN huge scale hydraulic press's moving beam. A self-tuning PID controller was designed and simulated by using the MATLAB fuzzy logic tool. The experiment was carried on the 315T experimental test special-purpose press. The results both show that the...
A special kind of direct driving Tension Leveller of Electro-galvanized unit in the Cold-Rolling plant of an Iron & Steel Company in China was mad as the research object. Firstly, the structure of the transmission system and its working principle were introduced. Then, to make a target of improving the transmission system's characteristics, the reference roller control strategy was made. In addition,...
The speed control system of diesel engine is one typical nonlinear system. In order to control speed of the engine, in the paper, the nonlinear model of the 2135 engine governor is established. And the discrete sliding mode variable structure controller is designed. In-ring simulation of MATLAB has proved that when controlling a nonlinear system, the sliding mode variable structure control (VSC) has...
Focusing on the shortage of traditional PID control and fuzzy control, this paper has made the model of Permanent Magnet Linear Synchronous Motors (PMLSM). Then, a fuzzy PID controller has been designed to control the speed of PMLSM, and a simulation experiment is conducted in the last. The results of the experiment verify that fuzzy PID control is superior to PID control.
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