MonographDOI
Hydraulic control systems
Noah D. Manring,Roger Fales +1 more
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TLDR
In this article, the authors present a model of a four-way valve control of a linear actuator and a three-way spool-valve control of an axial-piston swashplate pump.Abstract:
Preface. Introduction. I. FUNDAMENTALS. 1 Fluid Properties. 1.1 Introduction. 1.2 Fluid Mass Density. 1.3 Fluid Bulk Modulus. 1.4 Thermal Fluid Properties. 1.5 Fluid Viscosity. 1.6 Vapor Pressure. 1.7 Chemical Properties. 1.8 Fluid Types and Selection. 1.9 Conclusion. 1.10 References. 1.11 Homework Problems. 2 Fluid Mechanics. 2.1 Introduction. 2.2 Governing Equations. 2.3 Fluid Flow. 2.4 Pressure Losses. 2.5 Pressure Transients. 2.6 Hydraulic Energy and Power. 2.7 Lubrication Theory. 2.8 Conclusion. 2.9 References. 2.10 Homework Problems. 3 Dynamic Systems and Controls. 3.1 Introduction. 3.2 Modeling. 3.3 Linearization. 3.4 Dynamic Behavior. 3.5 State-Space Analysis. 3.6 Block Diagrams and the Laplace Transform. 3.7 Stability. 3.8 Compensation. 3.9 Conclusion. 3.10 References. 3.11 Homework Problems. II HYDRAULIC COMPONENTS. 4 Hydraulic Control Valves. 4.1 Introduction. 4.2 Valve Flow Coefficients. 4.3 Two-Way Spool Valves. 4.4 Three-Way Spool Valves. 4.5 Four-Way Spool Valves. 4.6 Poppet Valves. 4.7 Flapper Nozzle Valves. 4.8 Conclusion. 4.9 References. 4.10 Homework Problems. 5 Hydraulic Pumps. 5.1 Introduction. 5.2 Pump Efficiency. 5.3 Gear Pumps. 5.4 Axial-Piston Swash-Plate Pumps. 5.5 Conclusion. 5.6 References. 5.7 Homework Problems. 6 Hydraulic Actuators. 6.1 Introduction. 6.2 Actuator Types. 6.3 Linear Actuators. 6.4 Rotary Actuators. 6.5 Conclusion. 6.6 References. 6.7 Homework Problems. III HYDRAULIC CONTROL SYSTEMS. 7 Valve-Controlled Hydraulic Systems. 7.1 Introduction. 7.2 Four-Way Valve Control of a Linear Actuator. 7.3 Three-Way Valve Control of a Linear Actuator. 7.4 Four-Way Valve Control of a Rotary Actuator. 7.5 Conclusion. 7.6 References. 7.7 Homework Problems. 8 Pump-Controlled Hydraulic Systems. 8.1 Introduction. 8.2 Fixed-Displacement Pump Control of a Linear Actuator. 8.3 Variable-Displacement Pump Control of a Rotary Actuator. 8.4 Conclusion. 8.5 References. 8.6 Homework Problems. INDEX.read more
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Journal ArticleDOI
Position Control of Electro-hydraulic Actuator System Using Fuzzy Logic Controller Optimized by Particle Swarm Optimization
TL;DR: The position control system of an electro-hydraulic actuator system (EHAS) is investigated and a method of control strategy that is implemented by employing a fuzzy logic controller whose parameters are optimized using particle swarm optimization (PSO) is proposed.
Proceedings ArticleDOI
Modeling and control of hydraulic rotary actuators used in forestry cranes
TL;DR: The aim is to present experimental results working with a particular sensing device for angular position as a complement to pressure sensing devices and provide the steps in experimental system identification used for modeling the system dynamics.
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Integrated model-based backstepping control for an electro-hydraulic system
TL;DR: In this paper, an integrated model-based backstepping (IBS) controller is proposed for position tracking control of a pump-controlled Electro Hydraulic System (PEHS) to compensate for the nonlinearities and unknown terms.
Proceedings ArticleDOI
Control of a hydraulically-actuated quadruped robot leg
Michele Focchi,Emanuele Guglielmino,Claudio Semini,Thiago Boaventura,Yousheng Yang,Darwin G. Caldwell +5 more
TL;DR: The core of this work is the experimental assessment of the pros and cons of single-input single-output (SISO) vs. multiple-input multiple- output (MIMO) and linear vs. nonlinear control algorithms in this application (the leg is a coupled multivariable system driven by nonlinear actuators).
Journal ArticleDOI
Physical Limitations for the Bandwidth Frequency of a Pressure Controlled, Axial-Piston Pump
Noah D. Manring,Viral S. Mehta +1 more
TL;DR: In this paper, the authors identify the design parameters that have the greatest impact on the bandwidth frequency of a pressure controlled axial-piston pump and present the most comprehensive pump-and-valve model available in the literature to date.