Hydraulic Power System Analysis

ISBN: 9780824799564 出版年：2006 页码：401 Akers, Arthur Gassman, Max Smith, Richard CRC Press

Introduction What Is Fluid Power? A Brief History of Fluid Power Fluid Power Applications, Present and Future Advantages of Using Fluid Power Systems A Probable Future Development Properties of Fluids and Their Units Basic Properties of Fluids Compressibility of Liquids Steady State Modeling Rationale for Model Development Source of Equations Conservation of Flow and Energy Friction Losses in Pipes and Fittings Basic Component Equations Worked Examples Discussion Dynamic Modeling Development of Analytical Methods Software Options Dynamic Effects Worked Examples Modeling Hints and Tips Discussion Linear Systems Analysis Introduction Linear Systems The Laplace Transform Inversion, the Heaviside Expansion Method Stability Block Diagrams Spring-Mass-Damper Time Response to Unit Step Force Time Constant Frequency Response and Feedback Introduction Mathematics of Frequency Response Frequency Response Diagrams Using Frequency Response to Find Controller Gain Summary Valves and Their Uses Introduction Directional Control Valves Special Directional Control Valves, Regeneration Flapper Nozzle Valve Flow Control Elements Relief Valves Unloading Valve Pressure Reducing Valve Pressure Sequencing Valve Counterbalance Valve Flow Regulator Valve Pumps and Motors Configuration of Pumps and Motors Pump and Motor Analysis Leakage Form of Characteristic Curves Axial Piston Pumps and Motors Pressure During a Transition Torque Affected by Pressure Transition - Axial Piston Pump Torque and Flow Variation with Angle for Multicylinder Pumps Hydrostatic Transmissions Introduction Performance Envelope Hydrostatic Transmission Physical Features Hydrostatic Transmission Dynamic Analysis Pressure Regulating Valve Purpose of Valve Operation of Valve Mathematical Model of Valve Effect of Damping Valve Model Expansion Basic Valve Model Model Expansion An Assessment of Modeling Flow Division Introduction The Hydraulic Ohm Method Brief Review of DC Electrical Circuit Analysis Fluid Power Circuit Basic Relationships Consolidation of Fluid Power Resistances Application to Unsteady State Flow Conclusions Noise Control Introduction Discussion of Method Mathematical Model Effect of Entrained Air in Fluid Further Discussion of the Mathematical Model Other Methods of Noise Control Damping Methods Index