Fluid Power: Components and SystemsC. R. Burrows, K. A. Edge This text is the second in a series reporting on the International Fluid Power Research Workshops held annually in Bath, England. Consisting of the proceedings of the 1989 meeting, the book explores a variety of areas, indicating the breadth of research and development in fluid power components and systems. Among the topics discussed are energy efficient systems for mobile applications; integration of microelectronics with hydraulic valves; mathematical modeling of components and systems; pneumatic systems; a variety of different pumps; dynamometry; hydraulic component and system noise; the problem of pump flow ripple; assessment of pump or motor performance. In addition, three of the papers are concerned with simulation, reflecting the industry-wide emphasis on performance and design. |
Contents
Introduction | 1 |
Use of pulsewidth modulation pressure control | 25 |
Hydropneumatic accumulators | 43 |
Copyright | |
15 other sections not shown
Common terms and phrases
accumulator actuator analysis axial piston pumps Bath behaviour closed loop coefficient constant curves cylinder described dynamic dynamometer dynamometer system effect efficiency electropneumatic engine equation experimental feedback ferrograms Figure filter flow ripple flowmeter Fluid Power Centre fluid power components fluid power systems frequency domain friction gear pump hydraulic circuit hydraulic systems hydroacoustic hydrostatic impedance inlet input l/min leakage linear load sensing machine mass flow rate mechanical natural frequency non-flatness obtained operating conditions orifice P-Q pump P₁ parameters performance poppet possible power loss pressure control pumps and motors ratio rotational speed rubbing wear particles sensors servovalve shaft shown in Fig signal simulation slipper plate surface temperature test rig theoretical thermodynamic efficiency thermodynamic method tilting couple torque transducer transfer function transfer matrix University of Bath values valve control variable vector velocity viscosity volume Wheatstone bridge