Hydraulic Servo-systems

1 Introduction.- 1.1 Historical View and Motivation for Hydraulic Systems.- 1.2 Aims and Focus of the Book.- 1.3 Outline of the Chapters.- 1.4 Background of the Work and Bibliographical Notes.- 2 General Description of Hydraulic Servo-systems.- 2.1 Basic Structure of Hydraulic Servo-systems.- 2.2 Description of the Components.- 2.3 Classification of Hydraulic Servo-systems.- 2.4 Measurement and Control Devices.- 2.5 Application Examples.- 3 Physical Fundamentals of Hydraulics.- 3.1 Physical Properties of Fluids.- 3.2 General Equations of Fluid Motion.- 3.3 Flow Through Passages.- 3.4 Spool Port Forces.- 3.5 Electro-hydraulic Analogy.- 4 Physically Based Modelling.- 4.1 Introduction.- 4.2 Elementary Models.- 4.3 Typical Non-linear State-space Models.- 4.4 Structured and Simplified Models of Valve-controlled Systems.- 4.5 Determination of Specific Model Parameters.- 4.6 Implementation and Software Tools.- 4.7 Section Summary.- 5 Experimental Modelling (Identification).- 5.1 Introduction.- 5.2 Pre-identification Process.- 5.3 Overview of Model Structures.- 5.4 Description of Selected Non-linear Model Structures.- 5.5 Parameter Estimation Methods.- 5.6 Optimisation Algorithms.- 5.7 Grey-box Identification ofNon-linear Hydraulic Servo-system Models.- 5.8 Fuzzy Identification.- 5.9 Identification with Artificial Neural Networks.- 6 Hydraulic Control Systems Design.- 6.1 Introduction.- 6.2 Classical Feedback Control Design.- 6.3 Estimator-based State Feedback Control.- 6.4 Extensions to Linear Feedback Control.- 6.5 Feedback Linearising Control.- 6.6 Approaches Similar to Feedback Linearisation.- 6.7 Fuzzy Control.- 6.8 Neural-network-based Control.- 6.9 Vibration Damping Control.- 6.10 State Estimation.- 6.11 Implementation and Software Tools.- 6.12 Rapid Prototyping Tools for Control.- 6.13 Section Summary.- 7 Case Studies and Experimental Results.- 7.1 Identification and Control of a Synchronising Cylinder.- 7.2 Modelling and Control of a Small Differential Cylinder.- 7.3 Control of a Big Differential Cylinder.- 7.4 Vibration Damping Control for a Flexible Robot.- 7.5 Vibration Damping Control for a Concrete Pump.- Appendix A Fluid Power Symbols.- Appendix B Data and Catalogue Sheets.- Appendix C Non-linear Control Background.- References.