Electro Hydraulic Control Theory and Its Applications Under Extreme Environment

Book description

Electro hydraulic Control Theory and Its Applications under Extreme Environment not only presents an overview on the topic, but also delves into the fundamental mathematic models of electro hydraulic control and the application of key hydraulic components under extreme environments. The book contains chapters on hydraulic system design, including thermal analysis on hydraulic power systems in aircraft, power matching designs of hydraulic rudder, and flow matching control of asymmetric valves and cylinders. With additional coverage on new devices, experiments and application technologies, this book is an ideal reference on the research and development of significant equipment.

  • Addresses valves' application in aircrafts, including servo valves, relief valves and pressure reducing valves
  • Presents a qualitative and quantitative forecast of future electro-hydraulic servo systems, service performance, and mechanization in harsh environments
  • Provides analysis methods, mathematical models and optimization design methods of electro-hydraulic servo valves under extreme environments

Table of contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Copyright
  5. Preface
  6. Abstract
  7. Chapter 1. Overview
    1. 1.1. Electrohydraulic control technology
    2. 1.2. Aircraft electrohydraulic servo control technology
    3. 1.3. History and evolvement process of the electrohydraulic servo valve
    4. 1.4. Research significance of electrohydraulic servo control system under extreme environmental conditions
  8. Chapter 2. Hydraulic Fluid and Electrohydraulic Servo Valves
    1. 2.1. Hydraulic fluid in electrohydraulic servo systems
    2. 2.2. Principle and mathematic model of electrohydraulic servo valves
  9. Chapter 3. Jet-Pipe Electrohydraulic Servo Valve
    1. 3.1. Overview
    2. 3.2. Fundamentals and structure of jet-pipe servo valve
    3. 3.3. Terminology and definition of electrohydraulic servo valve
    4. 3.4. Overseas patents of the jet-pipe servo valve
    5. 3.5. Applications of jet-pipe servo valve on aircraft
    6. 3.6. Conclusions
  10. Chapter 4. Aircraft Hydraulic Power System
    1. 4.1. Outline of aircraft hydraulic energy systems
    2. 4.2. Hydraulic system of the Airbus A320
    3. 4.3. Thermal analysis of aircraft hydraulic systems and oil temperature control technology
    4. 4.4. Conclusions
  11. Chapter 5. Aircraft Electrohydraulic Servo Control Technology
    1. 5.1. Electrohydraulic control technology
    2. 5.2. Elastic O-type ring sealing technology
    3. 5.3. Aircraft electrohydraulic servo technology
    4. 5.4. Control actuation system of anti-aircraft missile
    5. 5.5. Auxiliary power unit of anti-aircraft missile
    6. 5.6. Aircraft gas turbine pump hydraulic power application technology
    7. 5.7. Power-matching design of hydraulic rudder system
  12. Chapter 6. Flow-Matching Control of Asymmetrical Hydraulic Valve and Asymmetrical Hydraulic Cylinder
    1. 6.1. Mathematical model and pressure characteristics of hydraulic servo mechanism with zero-lap valve controlled asymmetrical cylinder
    2. 6.2. Hydraulic control system speed gain characteristics
    3. 6.3. Natural frequency of hydraulic cylinders and pneumatic cylinders
  13. Chapter 7. Pressure Characteristics of Symmetrical Uneven Underlap Hydraulic Slide Valves
    1. 7.1. Pressure characteristics of symmetrical uneven hydraulic slide valves
    2. 7.2. Pressure and leakage at null position
    3. 7.3. Application examples
  14. Chapter 8. Single Stage Overflow Valve in Aerocraft Hydraulic Control Systems
    1. 8.1. Characteristics and working principle of single stage overflow valve with balanced piston and fixed orifice
    2. 8.2. Working point and basic characteristics
    3. 8.3. Influence of structural parameters on dynamic characteristics
    4. 8.4. Valve characteristics in vibration environment
    5. 8.5. Influence of operation point of overflow valve on frequency of missile electrohydraulic energy system
  15. Chapter 9. Hydraulic Pressure Reducing Valve for Aircraft
    1. 9.1. Structure characteristics and working principle
    2. 9.2. Mathematical model
    3. 9.3. Theoretical characteristics and their influencing factors
  16. Chapter 10. Hydraulic Components in Extreme Temperature Environments
    1. 10.1. Aircraft hydraulic accumulator and gas cylinder in extreme temperature environments
    2. 10.2. Electrohydraulic servo valve in extreme temperature environments
  17. Chapter 11. Electrohydraulic Servo Valve in Vibration and Impact Environment
    1. 11.1. Mathematical model of electrohydraulic servo valve in vibration and impact
    2. 11.2. Electrohydraulic servo valve in unit step acceleration environment
    3. 11.3. Electrohydraulic servo valve in unit pulse acceleration environment
    4. 11.4. Electrohydraulic servo valve under vibration condition
    5. 11.5. Conclusions
  18. Chapter 12. Electrohydraulic Servo Valves in Centrifugal Environments
    1. 12.1. Acceleration composition theorem with circular transport motion
    2. 12.2. Electrohydraulic servo valves in a centrifugal environment of uniformly circular motion
    3. 12.3. Electrohydraulic servo valves in a centrifugal environment of uniformly accelerated circular motion
    4. 12.4. Null bias of electrohydraulic servo valves in a centrifugal environment
    5. 12.5. Performance of electro hydraulic servo valves in a centrifugal environment
    6. 12.6. Layout measures of electrohydraulic servo valves in vibration, impact and centrifugal environments
  19. Chapter 13. Optimal Design of the Electrohydraulic Servo Valve
    1. 13.1. Optimal design of the electrohydraulic servo valve based on amplitude margin
    2. 13.2. Optimal design of the torque motor integrated stiffness of the electrohydraulic servo valve
    3. 13.3. Electrohydraulic servo valve with compensating throttle
    4. 13.4. Asymmetrical nozzle flapper type single-stage electrohydraulic servo valve
    5. 13.5. Asymmetry of the nozzle flapper valve of the two-stage electrohydraulic servo valve with force feedback
  20. Chapter 14. Marine Hydraulic Technology
    1. 14.1. Hydraulic system of ship pitch propeller
    2. 14.2. Ship accumulator-pump hydraulic energy system
    3. 14.3. Dynamic pressure damper technology
    4. 14.4. Marine hydraulic system screw joint technology
    5. 14.5. Hydraulic system wave absorber
    6. 14.6. Submarine seawater hydraulic system
  21. Index

Product information

  • Title: Electro Hydraulic Control Theory and Its Applications Under Extreme Environment
  • Author(s): Yaobao Yin
  • Release date: February 2019
  • Publisher(s): Butterworth-Heinemann
  • ISBN: 9780128140574