Dissertation > Excellent graduate degree dissertation topics show

Sealed metal cylinder friction characteristics and position control technology research

Author: ShiYanBo
Tutor: LiXiaoNing
School: Nanjing University of Technology and Engineering
Course: Mechanical and Electronic Engineering
Keywords: Metal seal cylinder Friction measurement Servo control PID
CLC: TH138
Type: Master's thesis
Year: 2009
Downloads: 96
Quote: 2
Read: Download Dissertation

Abstract


Cylinder friction is an important reason for the pneumatic servo positioning accuracy. The traditional cylinder using ordinary rubber seals seal, this contact seal makes greater friction between the cylinder piston and cylinder wall, so that the positioning accuracy and stability of the servo system worse. New metal seal cylinder gap sealing principle, greatly reduce the friction of the cylinder. The test for this new type of cylinder has not its friction study of friction, friction characteristics to obtain basic data, provide technical reference for practical engineering applications. In addition, due to the improvement of the friction characteristics, using metal seal cylinder position servo system is of great significance to improve the accuracy and stability of the pneumatic servo system. Firstly, very low for the metal seal cylinder friction characteristics affecting the main factors of friction measurement precision cylinder static and dynamic friction measurement method, and select the appropriate measuring instrument according to the experimental requirements, build a friction test platform . Two series of a plurality of models of the cylinder of a company, a lot of friction measurement test, were measured after the cylinder was allowed to stand for a long time, movement after repeated, and the different positions of the static friction, the use of the error analysis theory derived static friction The numerical range of the measurement; measured dynamic friction of the respective cylinders of the different speeds, the friction characteristic curve is drawn through the segmentation fitting. Followed by the selection of the metal seal cylinder and new electrical proportional pressure valve position servo system. Experimental Study of a proportional pressure control valve characteristics the theoretical modeling system to understand the basic characteristics of the system, and provide a basis for the experimental study of the subsequent position control. Then positioning characteristics of the PID control algorithm metal seal cylinder servo system. According to the characteristics of the pressure control of a variety of pressure-control mode, the influence of the position control by comparing the various methods, a rapid response of the position control method; for system steady accuracy is not high, a variable parameter PID control algorithm to adjust control parameters, the system response for better speed and accuracy of the positioning based on single neuron adaptive PID algorithm under the system characteristics; Based on this study, the test results show that the The method can obtain higher steady-state positioning accuracy. New metal seal cylinder and the the ordinary rubber seal cylinder under the same experimental conditions, the position control of comparative experiments, experiments show that the metal sealed cylinder can get better positioning. Metal seal the cylinder due to the reduction of friction, and significantly improves the accuracy and stability of the position servo.

Related Dissertations

  1. Study on the Control System for Automatic Aiming of HWIL Pitching Mechanism,TJ303
  2. Single Neuron PID Control for Electro-Hydraulic Servo Unit of Ship Rudder,U666.152
  3. Research on Ducted Fan Unmanned Vehicle Autonomous Modeling and Control Strategies,V249.122
  4. Research on Temperature Control System for Laser Diode,TP273
  5. Research on the Control and Remedy of Nanopositioning Stage Drived by Piezo Material Lead Zirconate Titanate,TP273
  6. Design the Control System of Ocean Wave’s Simulation Table Based on Theory of Fuzzy Turning PID,TP273.4
  7. Multilayer coextrusion drooling forming process temperature control technology,TQ320.721
  8. Brushless DC Motor and Control System,TM33
  9. Research on Solenoid Valve Test System for Water Medium,TH134
  10. Application of Servo System in Tension Control of Unwinder Machine,TP273
  11. PID Controller Design of Linear Systems with Time Delay Based on Parametric Space and GUI Simulation,TP273
  12. The Research on Hydraulic System of Two-roll Straightening Machine,TG333.23
  13. Research on Modification and Application of Particle Swarm Optimization Algorithm Based on Control Methods,TP301.6
  14. Pneumatic Muscle Actuators humanoid design and control of the elbow,TP242
  15. Design and Optimization Control of the Electroslag Furnace Atomization Automatic Control System,TP273
  16. Study on Industrial Boiler Water Level Control System,TP273
  17. The Research of Mobile Machine Vision Navigation and Obstacle Avoidance System,TP242
  18. Research and Design of Optimized Fractional-Order PID Controller,TP13
  19. The Design and Study of Control System of Car-type Heat Treating Furnace,TG155.92
  20. Automotive the starter performance of high-precision high stability of the test method and application,U467
  21. Research of Control Strategy Based on the Electro-hydraulic Proportional Position Control System,TH137.52

CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Pneumatic transmission
© 2012 www.DissertationTopic.Net  Mobile