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The Research of the Technology of Vehicle Height Control

Author: MaBin
Tutor: ShiWeiJia
School: Hebei University of Technology
Course: Mechanical Engineering
Keywords: Vehicle height control Semi-active air suspension DSP MATLAB / SIMULINK Fuzzy Control Multisim
CLC: U463.33
Type: Master's thesis
Year: 2011
Downloads: 20
Quote: 0
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Abstract


With the development of automotive technology , there is a growing emphasis on the vehicle 's driving stability and ride comfort . The electronically controlled air suspension raised , largely meet the requirements of the car . The air suspension began in the 1940s . Was originally used in the military field , applied to civilian areas in the 1980s , with the development of control technology , electronically controlled air suspension also become more sophisticated . Which vehicle height control suspension shall be a branch . This paper analyzes the characteristics and the role of the principle of the semi-active air suspension vehicle height control and analysis of the components of the control system . Established based on the model of the semi-active air suspension stiffness and height adjustable 1/4 , while establishing the fuzzy controller to adjust the stiffness and height adjustment of the PID controller and module created by MATLAB / SIMULINK the model for the simulation analysis. Principle similar to the vehicle control circuit , the control circuit has been redesigned . The brief design CAN bus chassis systems . Prepared by the sub- circuit board for stepper motor control for altitude, speed monitoring . Hardware design based on a modular approach , the preparation of the program , given the programming flowchart . Finally, the design of the circuit in Multisim simulation, the waveform of the output signal of the respective sensor circuit is verified , the use of the TOP2812 development board online simulation function , the stepping motor of the same principles used in the kind of trials.

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Travel System > Suspension
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