起落架磁流變減震器電氣控制及算法的設(shè)計(jì)
[Abstract]:With the research and application of intelligent fluid materials, the damping force is continuous, and the adjustable magnetorheological shock absorber has great development space in the landing gear damping. As a result of the landing moment of aircraft landing gear, it is necessary for the control system to generate a certain amount of excitation current in a very short time to improve the performance of the damping system. The response time of the control system is required to be less than 10 Ms. In this paper, the modeling and simulation of fuzzy PID controller, the design of hardware circuit and software of control system are analyzed and studied. The main contents are as follows: (1) Simulation and analysis of fuzzy PID controller: the simulation model of fuzzy PID controller is established and combined with the magnetorheological damping system model of landing gear established by the previous research group. The validity of the fuzzy PID controller model is verified. (2) the design of the hardware circuit and software of the control system: the design of the hardware circuit of the control system based on the single chip microcomputer of MSP430 model, which mainly includes: signal acquisition, signal conditioning, and so on. Signal processing, current drive circuit, etc., and in the hardware circuit, the current feedback mode is used to control the current precision to optimize. In the design of control system software, the combination of main program and subroutine is adopted. In order to improve the accuracy of the control algorithm, the software filtering method is used to eliminate the noise and interference of the signal. After on-line debugging of the controller, the loop current in the coil can be controlled in real time. (3) the experimental results show that the response time of the control system is less than 8 Ms, and the output current is 0? It is verified that the steady-state and dynamic characteristics of the hardware circuit of the controller are superior.
【學(xué)位授予單位】:中國民航大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:V226.2;TP273
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