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An Optimal Control Method of PID Controller Based on Synthetic Anti-rolling Chaotic System

A chaotic system, optimized control technology, applied to equipment that reduces ship motion, equipment that increases ship stability, and uses hydrofoils to act on the surrounding water surface to reduce ship motion, etc. The actual control effect, etc.

Active Publication Date: 2017-05-24
HARBIN ENG UNIV
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Problems solved by technology

However, at low speeds, the fin stabilizer control system cannot work normally, which will affect the actual control effect

Method used

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  • An Optimal Control Method of PID Controller Based on Synthetic Anti-rolling Chaotic System
  • An Optimal Control Method of PID Controller Based on Synthetic Anti-rolling Chaotic System
  • An Optimal Control Method of PID Controller Based on Synthetic Anti-rolling Chaotic System

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Embodiment Construction

[0052] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0053] combine Figure 1-7 , the present invention comprises the following steps:

[0054] (1) Establish a comprehensive anti-rolling system model, and take the wave inclination as the system input.

[0055] (2) Transform the integrated anti-rolling system model into an integrated anti-rolling chaotic system model, and verify the chaotic characteristics of the integrated anti-rolling system model by using the phase diagram and Lyapunov exponential spectrum analysis method.

[0056] (3) Using the piecewise quadratic function x|x| as the generator of chaos, select the bifurcation K parameter corresponding to the non-positive Lyapunov exponents of the system as the nonlinear feedback of the ship's comprehensive anti-rolling chaotic system The controller performs chaos control on the integrated anti-rolling chaotic system.

[0057] (4) Using the method of combining...

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Abstract

The invention provides an integrated stabilization chaotic system based PID (Proportion Integration Differentiation) controller optimization control method. The analysis is performed on an integrated stabilization system dynamic model equation to obtain a chaotic system so as to solve the problem of ship stabilization. The chaotic behavior of the system under the certain conditions is verified by a phase diagram and Lyapunov exponent spectrum analysis method, controlled parameters are selected, and the chaotic behavior of the system can be effectively controlled by a nonlinear feedback control method. According to the integrated stabilization chaotic system based PID controller optimization control method, the chaotic dynamics behavior of the system is improved and the original dynamic characteristics of the system are reserved; a chaotic search algorithm is combined with an ant colony algorithm to implement the optimization of the PID control parameters and accordingly the global optimization capability of the ant colony algorithm is high, meanwhile the system convergence speed is improved, and accordingly the control system performance is significantly improved; the value of application to a controller device is high, wherein the ship rolling motion is effectively designed through the controller device.

Description

technical field [0001] The invention relates to a ship anti-rolling control method. Background technique [0002] With the rapid development of the theory of ship rolling motion, scholars at home and abroad have begun to study and analyze a large number of complex nonlinear phenomena in the process of ship stabilization by using nonlinear theories and methods. The development of chaos theory and chaos control theory provides a new idea for the analysis of ship rolling motion. [0003] C.Novara-L.Fagiano proposed to use direct feedback control to design nonlinear systems to overcome the difficulties caused by nonlinear parameter changes. Li Tianwei used rectangular pulses to perform perturbation control on the ship's course motion model and achieved good control results. Zhang Hui used The numerical analysis method points out that the change of structural parameters will affect the chaotic motion of the wing nonlinear system, which provides a reference for the effective cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B39/00B63B39/06
Inventor 于立君刘少英王辉陈佳张波波关作钰王正坤李灏
Owner HARBIN ENG UNIV
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