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Magnetic fluid motion control system based on parameter uncertainty quantization

A technology of uncertain parameters and motion control system, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as difficulty in establishing

Active Publication Date: 2019-06-28
NINGBO UNIV
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  • Description
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Problems solved by technology

Due to nonlinearity and parameter uncertainty, it is difficult to establish the relationship between the optimal external magnetic field (control input) and the corresponding dynamics of the MHD flow rate

Method used

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  • Magnetic fluid motion control system based on parameter uncertainty quantization
  • Magnetic fluid motion control system based on parameter uncertainty quantization
  • Magnetic fluid motion control system based on parameter uncertainty quantization

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Embodiment Construction

[0083] Such as figure 1 Shown: The topological structure of the magnetic fluid system in the channel is composed of parallel plates 1, the moving direction of the magnetic fluid 2, and the external electromagnetic field 3 perpendicular to the direction of the velocity of the magnetic fluid. The external electromagnetic field forms electromagnetic fields of different strengths on the magnetic fluid through the adjustment of the current and voltage values, thereby affecting the movement of the magnetic fluid.

[0084] Such as figure 2 Shown: the flow chart of the control of the magnetic fluid system in the channel of the present invention: first, the magnetic fluid enters the channel, and the electromagnetic field is applied between the parallel plates. Secondly, the fluid in the experimental channel is a magnetic fluid. With the aid of high-definition cameras and other experimental equipment, the velocity information of the magnetic fluid at the initial moment is obtained. ...

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Abstract

Provided in the invention is a magnetic fluid motion control system based on parameter uncertainty quantization. The system comprises a controller; a magnetic fluid system model, an objective function, an objective function gradient A or an objective function gradient B are arranged in the controller. According to the invention, the controller design is simplified; the random disturbance and uncertain factor influences in the actual movement of the magnetic fluid can be simulated; and the applicability problem of the control variable parameterization to the model uncertainty problem is solved.The applicability problem of the control variable parameterization to the model uncertainty problem is solved. The total time required by the control algorithm is greatly reduced by being compared with the time required by conventional control algorithms; and thus the possibility of real-time control of the magnetic fluid is increased.

Description

technical field [0001] The invention relates to the field of motion control of magnetic fluid in channels, and focuses on completing the uncertain quantification of model parameters of magnetic fluid in channels and the real-time control strategy of magnetic fluid motion. Background technique [0002] Magnetohydrodynamics (MHD, Magnetohydrodynamics), including the magnetism and behavior of conductive fluids, widely exists in plasmas, microfluidic / nanofluidic flows, electrolytes, etc. Its MHD flow system consisting of a set of Navier-Stokes and Maxwell equations is characterized by the motion of a conductive fluid between parallel plates under externally applied magnetic and electric fields. Recently, the study of MHD flow systems through different manipulation methods has gained continuous attention. Sheikholeslam et al. studied the influence of magnetic field effect on unsteady nanofluid flow between plates. Schuster et al. study the design of boundary controllers based o...

Claims

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Application Information

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IPC IPC(8): G05B13/04
Inventor 陈特欢王泽锴
Owner NINGBO UNIV
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