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Parameter influence analysis method of load simulator based on simulink

A technology of load simulator and analysis method, applied in the direction of controllers with specific characteristics, electric controllers, etc., can solve the problems of less reverse thinking, dependence on linear transfer functions, weak attention to system performance, etc., to improve the parameters The effect of the impact analysis method

Active Publication Date: 2022-02-01
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0009] The purpose of the present invention is to provide a load simulator parameter influence degree analysis method based on SIMULINK, which solves the problem that the influence degree analysis of the existing electro-hydraulic load simulator is too dependent on the linear transfer function, the attention to the system performance is slightly weak, and the reverse is less thinking to characterize issues such as performance changes

Method used

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  • Parameter influence analysis method of load simulator based on simulink
  • Parameter influence analysis method of load simulator based on simulink
  • Parameter influence analysis method of load simulator based on simulink

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Embodiment

[0075] The parameters of the dual vane hydraulic motor force control load simulator are:

[0076] A=2×10 -4 m 3 / rad, B=800N m s / rad, β e =2×10 8 Pa, C t =9×10 -12 m 5 / (N·s), P s =21×10 6 Pa, P r = 0 Pa, V 01 =V 02 =1.7×10 -4 m 3 , J=0.32kg·m 2 .

[0077] Comparing the simulation results: during the simulation, the parameter P in the PID controller is mainly adjusted, and the parameters of the PID controller designed by the present invention are selected as: P=0.05, I=0, D=0.

[0078] The time-varying external disturbance of the system is selected as d=200sint, and the trajectory is The high-frequency torque command that the system expects to track is a curve The low frequency torque command is

[0079] Figure 5 It is the high frequency torque command curve (5HZ) of the system. Image 6 is the curve of the system tracking error changing with time. It can be seen that the tracking error is bounded and convergent, and this bound is very small compared ...

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Abstract

The invention discloses a load simulator parameter influence analysis method based on SIMULINK, which belongs to the field of electro-hydraulic servo control; the method is different from the previous linear analysis method, by analyzing the inherent nonlinearity of the hydraulic system and using MATLAB / SIMULINK Inner modeling, analyzing the degree of influence of the nonlinear parameters in the system, taking the change rate of the nonlinear parameters as the independent variable, and taking the tracking error and bandwidth of the system as the dependent variable, finds out the influence of the main parameters in the system on the system performance affect characteristics. The present invention has the advantages of quick and accurate parameter analysis, and uses the analysis method of SIMULINK to overcome the disadvantages of complicated formulas and low efficiency of parameter analysis in the traditional analysis method; the analysis method of the nonlinear parameter influence degree of the hydraulic load simulator designed by the present invention is simple and practical , has guiding effect on the design and experiment of the hydraulic system.

Description

technical field [0001] The invention belongs to the field of electro-hydraulic servo control, in particular to a SIMULINK-based analysis method for parameter influence degree of a load simulator. Background technique [0002] The load simulator is used to simulate the aerodynamic moment on the rudder surface of the aircraft and other moving objects during flight and movement. It is one of the important ground simulation equipment for missile and other weapon systems. The load simulator is also called the force / torque servo loading system, which belongs to the category of force / torque servo control system and has a structure similar to that of the ordinary force / torque servo system. A general load simulator mainly includes a servo controller, an actuator, and a detection element. The core of the simulator is the servo controller, and the expected output of the system is the loading force / torque. [0003] According to the different loading actuators, load simulators can be di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 罗成洋徐强
Owner NANJING UNIV OF SCI & TECH
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