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Fundamentals of Fluid Power Control.
This is an undergraduate text/reference for applications in which large forces with fast response times are achieved using hydraulic control.
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Leiden :
Cambridge University Press,
2009.
|
| Temas: | |
| Acceso en línea: | Texto completo |
MARC
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| 049 | |a UAMI | ||
| 100 | 1 | |a Watton, John. | |
| 245 | 1 | 0 | |a Fundamentals of Fluid Power Control. |
| 260 | |a Leiden : |b Cambridge University Press, |c 2009. | ||
| 300 | |a 1 online resource (510 pages) | ||
| 336 | |a text |b txt |2 rdacontent | ||
| 337 | |a computer |b c |2 rdamedia | ||
| 338 | |a online resource |b cr |2 rdacarrier | ||
| 520 | |a This is an undergraduate text/reference for applications in which large forces with fast response times are achieved using hydraulic control. | ||
| 588 | 0 | |a Print version record. | |
| 505 | 0 | |a Cover -- Half-title -- Title -- Copyright -- Contents -- Preface -- 1 Introduction, Applications, and Concepts -- 1.1 The Need for Fluid Power -- 1.2 Circuits and Symbols -- 1.3 Pumps and Motors -- Example 1.1 -- Example 1.2 -- 1.4 Cylinders -- 1.5 Valves -- 1.6 Servoactuators -- 1.7 Power Packs and Ancillary Components -- 1.8 References and Further Reading -- BOOKS AND PAPERS -- COMMERCIAL DESIGN LITERATURE -- 2 An Introduction to Fluid Properties -- 2.1 Fluid Types -- HFB-Type -- Shell Irus Fluid BLT -- 2.2 Fluid Density -- 2.3 Fluid Viscosity -- 2.4 Bulk Modulus -- 2.5 Fluid Cleanliness -- 2.6 Fluid Vapor Pressure and Cavitation -- 2.7 Electrorheological (ER) Fluids and Magnetorheological (MR) Fluids -- 2.8 References and Further Reading -- 3 Steady-State Characteristics of Circuit Components -- 3.1 Flow Through Pipes -- 3.1.1 The Energy Equation -- 3.1.2 Laminar and Turbulent Flow in Pipes -- the Effect of Fluid Viscosity -- 3.1.3 The Navier-Stokes Equation -- 3.1.4 Laminar Flow in a Circular Pipe -- 3.1.5 The General Pressure-Drop Equation -- 3.1.6 Temperature Rise in 3D Flow -- 3.1.7 Computational Fluid Dynamics (CFD) Software Packages -- 3.2 Restrictors, Control Gaps, and Leakage Gaps -- 3.2.1 Types -- 3.2.2 Orifice-Type Restrictors -- 3.2.3 Flow Between Parallel Plates -- 3.2.4 Flow Between Annular Gaps -- 3.2.5 Flow Between an Axial Piston Pump Slipper and Its Swash Plate -- 3.2.6 Flow Between a Ball and Socket -- 3.2.7 Flow Between Nonparallel Plates Reynolds Equation -- 3.2.8 Flow Through Spool Valves of the Servovalve Type and the Use of a CFD Package for Analysis -- 3.2.9 Flow Characteristics of a Cone-Seated Poppet Valve -- 3.2.10 A Double Flapper-Nozzle Device for Pressure-Differential Generation -- 3.2.11 The Jet Pipe and Deflector-Jet Fluidic Amplifier -- 3.3 Steady-State Flow-Reaction Forces -- 3.3.1 Basic Concepts. | |
| 505 | 8 | |a 3.3.2 Application to a Simple Poppet Valve -- 3.3.3 Application to the Main Stage of a Two-Stage Pressure-Relief Valve -- 3.3.4 Application to a Spool Valve -- 3.3.5 Application to a Cone-Seated Poppet Valve -- 3.3.6 Application to a Flapper-Nozzle Stage -- 3.4 Other Forces on Components -- 3.4.1 Static and Shear-Stress Components -- 3.4.2 Transient Flow-Reaction Forces -- 3.5 The Electrohydraulic Servovalve -- 3.5.1 Servovalve Types -- 3.5.2 Servovalve Rating -- 3.5.3 Flow Characteristics, Critically Lapped Spool -- 3.5.4 Servovalve with Force Feedback -- 3.5.5 Servovalve with Spool-Position Electrical Feedback -- 3.5.6 Flow Characteristics, Underlapped Spool -- 3.6 Positive-Displacement Pumps and Motors -- 3.6.1 Flow and Torque Characteristics of Positive-Displacement Machines -- 3.6.2 Geometrical Displacement of a Positive-Displacement Machine -- 3.6.3 Flow Losses for an Axial Piston Machine -- 3.6.4 Torque Losses for an Axial Piston Machine -- 3.6.5 Machine Efficiency Axial Piston Pump -- 3.6.6 Machine Efficiency Axial Piston Motor -- 3.7 Pressure-Relief Valve Pressure-Flow Concepts -- 3.8 Sizing an Accumulator -- 3.9 Design of Experiments -- Example -- 3.10 References and Further Reading -- 4 Steady-State Performance of Systems -- 4.1 Determining the Power Supply Pressure Variation during Operation for a Pump-PRV-Servovalve Combination: A Graphical Approach -- 4.2 Meter-Out Flow Control of a Cylinder -- 4.3 A Comparison of Counterbalance-Valve and an Overcenter-Valve Performances to Avoid Load Runaway -- 4.4 Drive Concepts -- 4.5 Pump and Motor Hydraulically Connected: A Hydrostatic Drive -- 4.6 Pump and Motor Shaft Connected: A Power Transfer Unit (PTU) -- The Condition for Zero Speed -- The Condition for Each Pressure to Fall to Its PRV Setting -- The Condition for Equal Pressures -- 4.7 Servovalve-Motor Open-Loop and Closed-Loop Speed Drives. | |
| 505 | 8 | |a 4.7.1 Open-Loop Control -- 4.7.2 Closed-Loop Control -- 4.8 Servovalve-Linear Actuator -- 4.8.1 Extending -- 4.8.2 Retracting -- 4.8.3 A Comparison of Extending and Retracting Operations -- 4.9 Closed-Loop Position Control of an Actuator by a Servovalve with a Symmetrically Underlapped Spool -- 4.10 Linearization of a Valve-Controlled Motor Open-Loop Drive: Toward Intelligent Control -- 4.11 References and Further Reading -- 5 System Dynamics -- 5.1 Introduction -- 5.2 Mass Flow-Rate Continuity -- 5.3 Force and Torque Equations for Actuators -- 5.4 Solving the System Equations, Computer Simulation -- 5.5 Differential Equations, Laplace Transforms, and Transfer Functions -- 5.5.1 Linear Differential Equations -- 5.5.2 Nonlinear Differential Equations, the Technique of Linearization for Small-Signal Analysis -- 5.5.3 Undamped Natural Frequency of a Linear Actuator -- 5.5.4 Laplace Transforms and Transfer Functions -- 5.6 The Electrical Analogy -- 5.7 Frequency Response -- 5.8 Optimum Transfer Functions, the ITAE Criterion -- 5.9 Application to a Servovalve-Motor Open-Loop Drive -- 5.9.1 Forming the Equations -- 5.9.2 An Estimate of Dynamic Behavior by a Linearized Analysis -- 5.9.3 A Comparison of Nonlinear and Linearized Equations Using the Phase-Plane Method -- 5.10 Application to a Servovalve-Linear Actuator Open-Loop Drive -- 5.10.1 Forming the Equations -- 5.10.2 An Estimate of Dynamic Behavior by a Linearized Analysis -- 5.10.3 Transfer Function Simplification for a Double-Rod Actuator -- 5.11 Further Considerations of the Nonlinear Flow-Continuity Equations of a Servovalve Connected to a Motor or a Double-Rod Linear Actuator -- 5.12 The Importance of Short Connecting Lines When the Load Mass Is Small -- 5.13 A Single-Stage PRV with Directional Damping -- 5.13.1 Introduction -- 5.13.2 Forming the Equations, Transient Response. | |
| 505 | 8 | |a Control-Volume Flow Continuity -- PRV Flow -- Force Balance at the Spindle -- 5.13.3 Frequency Response from a Linearized Transfer Function Analysis -- 5.14 Servovalve Dynamics -- First-Stage, Armature, and Flapper-Nozzle -- Flapper-Nozzle and Resistance Bridge Flow Characteristic -- Force Balance at the Spool -- 5.15 An Open-Loop Servovalve-Motor Drive with Line Dynamics Modeled by Lumped Approximations -- Servovalve, Dynamics Included, Underlapped Spool -- Lines, Laminar Mean Flow, Two Lump Approximations per Line, Negligible Motor Internal Volume -- Motor Flow and Torque Equations -- 5.16 Transmission Line Dynamics -- 5.16.1 Introduction -- Servovalve-Cylinder with Short Lines and Significant Actuator Volumes -- Servovalve-Motor with Long Lines and Negligible Actuator Volumes -- 5.16.2 Lossless Line Model for Z and Y -- 5.16.3 Average and Distributed Line Friction Models for Z and Y -- 5.16.4 Frequency-Domain Analysis -- 5.16.5 Servovalve-Reflected Linearized Coefficients -- 5.16.6 Modeling Systems with Nonlossless Transmission Lines, the Modal Analysis Method -- 5.16.7 Modal Analysis Applied to a Servovalve-Motor Open-Loop Drive -- 5.17 The State-Space Method for Linear Systems Modeling -- 5.17.1 Modeling Principles -- 5.17.2 Some Further Aspects of the Time-Domain Solution -- 5.17.3 The Transfer Function Concept in State Space -- 5.18 Data-Based Dynamic Modeling -- 5.18.1 Introduction -- 5.18.2 Time-Series Modeling -- 5.18.3 The Group Method of Data Handling (GMDH) Algorithm -- 5.18.4 Artificial Neural Networks -- 5.18.5 A Comparison of Time-Series, GMDH, and ANN Modeling of a Second-Order Dynamic System -- 5.18.6 Time-Series Modeling of a Position Control System -- 5.18.7 Time-Series Modeling for Fault Diagnosis -- 5.18.8 Time-Series Modeling of a Proportional PRV -- 5.18.9 GMDH Modeling of a Nitrogen-Filled Accumulator. | |
| 505 | 8 | |a 5.19 Some Comments on the Effect of Coulomb Friction -- 5.20 References and Further Reading -- 6 Control Systems -- 6.1 Introduction to Basic Concepts, the Hydromechanical Actuator -- 6.2 Stability of Closed-Loop Linear Systems -- 6.2.1 Nyquists Stability Criterion -- 6.2.2 Root Locus Method -- 6.2.3 Routh Stability Criterion -- 6.2.4 The State-Space Approach -- 6.2.5 Servovalve-Motor Closed-Loop Speed Control -- 6.2.6 Servovalve-Linear Actuator Position Control -- 6.2.7 The Effect of Long Lines on Closed-Loop Stability, Speed Control of a Motor -- 6.2.8 The Effect of Long Lines on Closed-Loop Stability, Position Control of a Linear Actuator -- 6.2.9 The Effect of Coulomb Friction Damping on the Response and Stability of aServovalve-Linear Actuator Position Control System -- 6.3 Digital Control -- 6.3.1 Introduction -- 6.3.2 The Process of Sampling -- 6.3.3 The z Transform -- 6.3.4 Closed-Loop Analysis with Zero-Order-Hold Sampling -- 6.3.5 Closed-Loop Stability -- 6.4 Improving the Closed-Loop Response -- 6.4.1 Servovalve Spool Underlap for Actuator Position Control, a Linearized Transfer Function Approach -- 6.4.2 Phase Compensation, Gain and Phase Margins -- 6.4.3 Dynamic Pressure Feedback -- 6.4.4 State Feedback -- 6.5 Feedback Controller Implementation -- 6.5.1 Analog-to-Digital Implementation -- 6.5.2 Generalized Digital Filters -- 6.5.3 State Estimation, Observers, and Reduced-Order Observers -- 6.5.4 Linear Quadratic (LQ) Optimal State Control -- 6.6 On-Off Switching of Directional Valves -- 6.6.1 PWM Control -- 6.6.2 Valves Sized in a Binary Flow Sequence -- 6.7 An Introduction to Fuzzy Logic and Neural Network Control -- 6.8 Servovalve Dither for Improving Position Accuracy -- 6.9 References and Further Reading -- 7 Some Case Studies -- 7.1 Introduction -- 7.2 Performance of an Axial Piston Pump Tilted Slipper with Grooves. | |
| 504 | |a Includes bibliographical references and index. | ||
| 546 | |a English. | ||
| 590 | |a ProQuest Ebook Central |b Ebook Central Academic Complete | ||
| 650 | 0 | |a Fluid power technology. | |
| 650 | 0 | |a Hydraulic control. | |
| 650 | 0 | |a Hydraulic motors. | |
| 650 | 6 | |a Fluidique (Mécanique des fluides) | |
| 650 | 6 | |a Commande hydraulique. | |
| 650 | 6 | |a Moteurs hydrauliques. | |
| 650 | 7 | |a hydraulic motors. |2 aat | |
| 650 | 7 | |a TECHNOLOGY & ENGINEERING |x Automation. |2 bisacsh | |
| 650 | 7 | |a TECHNOLOGY & ENGINEERING |x Robotics. |2 bisacsh | |
| 650 | 7 | |a Fluid power technology |2 fast | |
| 650 | 7 | |a Hydraulic control |2 fast | |
| 650 | 7 | |a Hydraulic motors |2 fast | |
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| 776 | 1 | |z 9780521762502 | |
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