Dissertation > Excellent graduate degree dissertation topics show

Research and Realization of BY-Wire Hydraulic Steering System Based on Fuzzy Control

Author: LuZhong
Tutor: LuZhiXiong
School: Nanjing Agricultural College
Course: Vehicle Engineering
Keywords: By-wire hydraulic steering Turn anti-slip Hydraulic circuit Electro-hydraulic proportional valve Fuzzy control algorithm
CLC: U463.4
Type: Master's thesis
Year: 2010
Downloads: 37
Quote: 1
Read: Download Dissertation

Abstract


This paper designed a by-wire hydraulic steering system, with rational space layout and simple structure. The system can replace the complex mechanical transmission mechanism of the traditional steering system, transmit of electrical signals, instead of hydraulic kinetic energy transfer in the hydraulic steering system, can also achieve closed-loop control, then made better regulation and control of vehicle steering stability properties, which is also a direction of vehicle electronic control. The design of the system in this paper is divided into three sections: mechanical, hydraulic, electrical.Firstly, this paper described the basic physical characteristics of the vehicle steering system, analyzed its steering mechanical transmission. According to the vehicle’s steering characteristics, this paper analyzed the transmission characteristics of the transmission mechanism, and set up mathematical model based on the relevant steering parameters, gave the control logic to solve sliding phenomena during steering, increased the anti-slip function for the whole hydraulic steering system.Secondly, this paper analyzed and compared several popular current hydraulic electronic control schemes, proposed a simple and practical electro-hydraulic scheme, the hydraulic schematic diagram was also given. By the simulation of the hydraulic system in the AMEsim software, the paper obtained the curve parameters from the hydraulic simulation, verifying the correctness of the model.Thirdly, the paper completed the electronic control parts of by-wire steering system, including the circuit design and software design of the control system based on TMS320F2812. The circuit design implemented the signal conditioning of sensors (steering wheel angle sensor, cylinder displacement sensor)and actuators (electro-hydraulic proportional valve PWM), matching with the power distribution and the interface module of power supply of the TMS320F2812. The design of software used A/D acquisition and PWM signal transmitter modules in TMS320F2812, achieved the functions of the sensor signal acquisition and PWM signal transmitter. The fuzzy control algorithm used in the main program for signal processing, achieved closed-loop control of the system.Finally, experimental platform of the hydraulic system was set up, and simulation experiments of the software and hardware parts of electric control were completed. This paper initially realized the basic functions of the hydraulic circuit of the by-wire steering, obtained analog signal data and graphics, proving the correctness of the design of the by-wire hydraulic system.

Related Dissertations

  1. Study on the Control System of the Three-phase Secondary Rectification Spot Welding,TG438
  2. Emulational Study on the Semi-active Control Using Magnetorheological Fluid Damper,TU352.1
  3. Electric Vehicle Intelligent Control System,TP29
  4. DeviceNet Intelligent Node Development and Its Application,TP273.5
  5. Based on the analysis of the electro-hydraulic proportional pressure - flow test valve control motor speed control system,TH137
  6. Design of the Universal Digital Controller for Proportional Valve,TH137
  7. Research on Fuzzy Neural Network Models and Its Application,TP18
  8. Fuzzy-PID Control in Electro-Hydraulic Proportional Valve System of Multi-Function Snow-Clean Vehicles,U418.326
  9. Study on Double Clutch Transmission,U463.212
  10. The Dynamic Modeling and Simulation of the Hydraulic System of the Concrete Pump Truck’s Arm,TU646
  11. Study on the System of Monitor for Resistance Spot Welding Based on CAN Bus,TG439.9
  12. The Study on Dynamic Characteristic of the Hydraulic System of Two Cylinders Synchronization,TH137
  13. Switched Reluctance Motor Drive Control System,TM352
  14. Investigation and Exploitation of Computer’s Inspected System for Die-casting Machine,TP277
  15. Research on Test System in Transmission of Tracked Vehicles,TP274
  16. Design of the Road-roller Water Sprinkler System with the Step-less Adjustment,U415.521
  17. Semi-Active Vibration Control Based on MR Damper,TB535.1
  18. Control System Research of Pipe Racking System for the Drilling Platform,TE928
  19. Study on and Identification of Electro-hydraulic Proportional Valve-Motor System,TH137
  20. The Design and Research of Folding-Arm Aerial Cage’s Hydraulic System,TH137
  21. Research on Control Algorithms of WCDMA Radio Frequency Channel Gain,TN929.533

CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Steering system
© 2012 www.DissertationTopic.Net  Mobile