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The three control parameters of PID interact and have a more complex relationship with control index, so the PID parameters tuning is more difficult. According to the Principle of expand response curves, through the theoretical analysising and the simulation verifying, it is found that the three control parameters tuning of PID can change into the single parameter KP tuning, there are the simple correspondence...
The problem of multiple equilibrium points caused by fixed-current levitation control was researched in this paper. Mathematic model of hybrid maglev system with permanent added into suspension magnet was established at first. The contacted force and electromagnetic force between magnet and guide way were expressed separately. Then fixed-current controller based on proportional-integral-differential...
Introduce a short stroke precision stage which is Droven by the linear AC servo motor. We build the mathematical model of the linear motor and the servo control system. The PID controller of the linear AC servo system is designed by partial model matching method. Parameters analysis and experiments are done. The results shows that this model has good positioning accuracy, good dynamic performance...
The temperature control system based on FPGA and Fuzzy-PID technology was used for the temperature control of the regeneration roaster of cold rolling Plant of Panzhihua Iron and Steel, compared with the single Fuzzy or PID control mode. The results show that Fuzzy control was used to adjust for a rapid response in a large error and PID control was used for adjustment of the details in a small error...
This paper introduces the classification of adaptive PID control. It mainly describes the principle of adaptive control and the principles and applications of several common adaptive PID controllers. In addition, this paper has analysed the application of fuzzy adaptive PID control in the trajectory control and spray system control in the trellis spray robot.
Aiming at multi-disturbance characteristic of drum water level system, control system uses three impulse cascade control strategy. This paper designs three impulse cascade control combined of incomplete differential PID and immune P control, fully using the advantages of artificial immune feedback control and incomplete differential PID. Boiler drum level simulation result shows the cascade control...
Considering the disadvantages of the distribution system, which is made of the rotating machine and the mechanical transmission device, such as low positioning accuracy, vulnerable to load influence, this paper puts forward a new kind of distribution system consists of the permanent magnet linear synchronous motor (PMLSM), which is based on the fuzzy Proportional-Integral-Differential (PID) control...
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...
PID is the most common control method in the design of a tank artillery stabilizer which is a position servo control system. Usually, the overshoot conflicts with settling time. This paper presents the dual PID regulating method based on the sliding mode control which can realize both the smaller overshoot and the shorter settling time. The first PID controller focuses on the smallest rise time, and...
In this paper, the author analyzed the construction of air brake of train and its nonlinear characteristic. The simulation model of deceleration control of the pneumatic brake system was built. Compared with different PID model, the simulation results are all discussed. Through the simulation, the feasibility of deceleration feedback method on pneumatic brake control of train is given.
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