Electric load simulator control method based on negative feedback correction

A technology of load simulator and control method, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as complex control algorithm, and achieve the effects of simplified control algorithm, small impact, and reduced noise effect

Inactive Publication Date: 2020-07-10
NANJING UNIV OF SCI & TECH
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), but the control algorithms are more complex

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  • Electric load simulator control method based on negative feedback correction
  • Electric load simulator control method based on negative feedback correction
  • Electric load simulator control method based on negative feedback correction

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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] combined with figure 1 And attached figure 2 , the electric load simulator, as the control object of the control method of the present invention, is mainly a system composed of a loading motor controller, a loading motor driver, a loading motor, a spring rod and a torque sensor; figure 2 , the control method of the present invention is composed of fuzzy controller 1, PI controller 2 and torque differential negative feedback 3.

[0021] first combined with figure 2 , the control method of the present invention first gives the system a torque input signal T in , torque input signal T in The system output torque T with feedback L Form the torque error signal e and the error change rate ec, the error signal e and the error change rate ec enter the adaptive fuzzy PI controller, and compare the proportional coefficient K according to the established ...

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Abstract

The invention discloses an electric load simulator control method based on negative feedback correction. The electric load simulator control method comprises the steps of: firstly, establishing a mathematical model of an electric load simulator system; secondly, performing stability analysis on the established electric load simulator system; thirdly, if the system is unstable, correcting the system as needs; if the system is stable but a loading bandwidth does not meet the loading requirement, correcting the system as needs; fourthly, correcting the electric load simulator system; and finally,introducing fuzzy control, designing a self-adaptive fuzzy PI controller, and improving control precision and robustness of the system by self-tuning a proportionality coefficient KP and an integralcoefficient KI of the PI controller and further adjusting the value of a time constant Kfd of torque differential negative feedback. The electric load simulator control method is simple in algorithm,easy to implement and smooth in output, and can effectively improve the stability and robustness of the system.

Description

technical field [0001] The invention relates to a brushless DC motor control technology, in particular to a control method of an electric load simulator based on negative feedback correction. Background technique [0002] The load simulator is a semi-physical device that simulates the air hinge moment of the steering gear under laboratory conditions. It can apply load to the steering gear system in real time under laboratory conditions to simulate the stress on the steering surface, and then simulate the performance of the steering gear system. The entire simulation system consists of two parts, the load simulator system and the steering gear system, that is, the loading system and the carrying system (or the loading object and the carrying object). Compared with the destructive experiment of the real object, the operation of the load simulator is simple, the safety factor is high, the experiment cost is reduced, and the development cycle is shortened. The electric load si...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042G05B13/0275
Inventor刘梁贾东旭徐照平
OwnerNANJING UNIV OF SCI & TECH