A control system and control method for a magnetorheological fluid load simulator
A technology of load simulator and magnetorheological fluid, which is applied in the direction of program control system, general control system, control/regulation system, etc., can solve the problems that cannot meet the control system, load simulator maintenance work restrictions, load dynamics and Time-varying characteristic limitations and other issues, to achieve the effect of simple design, easy maintenance, and short development cycle
Active Publication Date: 2017-05-10
CHONGQING UNIV
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Problems solved by technology
[0003] For the existing electro-hydraulic, electric and hydraulic load simulators, their own high dynamic stiffness and complex control strategies have greatly restricted the dynamic and time-varying characteristics of the load, which cannot well meet the requirements of the control system.
The dynamic and time-varying characteristics of electrical loads are good, and the control strategy is relatively simple, but to realize the simulation of complex loads, it is necessary to design relatively complex electrical circuits, which leads to a long development cycle of the load simulator and a long maintenance work for the load simulator. severely restricted
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[0059] A control system for a magnetorheological fluid load simulator, such as figure 1 As shown, it includes a microcontroller 1, a drive module 2, a magnetorheological fluid load simulator 3, a current detection module 4, a speed feedback module 5 and a power supply module 6, wherein:
[0060] Such as figure 2 As shown, the magneto-rheological fluid load simulator 3 includes a cylinder 301, a damping cylinder 302 arranged inside the cylinder 301, a transmission shaft 303 connected to the damping cylinder 302, and a cylinder wound around the damping cylinder 302. The excitation coil 304 on the cylinder 302, the side walls of the damping cylinder 302 and the cylinder 301 are made of magnetically conductive material, and the transmission shaft 303 extends outward from both ends of the cylinder 301 The working gap between the cylinder 301 and the damping cylinder 302 is filled with magnetorheological fluid 305, and the two ends of the cylinder 301 are provided with sealing mec...
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The invention provides a control system of a magnetorheological fluid load simulator and a control method thereof. The control system comprises a microcontroller, a driving module, the magnetorheological fluid load simulator, a current detection module, a rotation speed feedback module and a power module. The microcontroller controls the current of a magnet exciting coil in the magnetorheological fluid load simulator through an increment type digital PID control algorithm, so that corresponding damping force is output through the magnetorheological fluid load simulator; a rotation speed signal collected by the rotation speed feedback module is used for judging the load simulation condition of the magnetorheological fluid load simulator, so that simulation control over a constant-torque load, a constant-power load and a ventilation fan load is achieved. The system is simple in design, short in development period, easy to maintain and high in control precision.
Description
technical field [0001] The invention relates to a magnetorheological fluid load simulator, in particular to a control system and a control method for a magnetorheological fluid load simulator. Background technique [0002] Load simulator technology is mainly a technology for studying loading objects. With the development of social economy, science and technology, energy and other fields, new requirements are constantly emerging, including the research and testing of new products, and load simulation technology has been continuously developed under this background. [0003] For the existing electro-hydraulic, electric and hydraulic load simulators, their own high dynamic stiffness and complex control strategies have greatly restricted the dynamic and time-varying characteristics of the load, which cannot well meet the requirements of the control system. . The dynamic and time-varying characteristics of electrical loads are good, and the control strategy is relatively simple...
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IPC IPC(8): G05B19/04
CPCG05B19/042G05B2219/26
Inventor 叶兆虹孙跃苏玉刚戴欣唐春森王智慧
Owner CHONGQING UNIV