Principles of Hydraulic Systems Design Second Edition By Peter Chapple
Contents :
chapter 1 hydrauLic power transmission and its controL
chapter 2 hydrostatic pumps and motors
chapter 3 hydrauLic cyLinders
chapter 4 pressure controL VaLVes
chapter 5 fLow controL VaLVes
chapter 6 anciLLary equipment
chapter 7 circuit design
chapter 8 fLow processes in hydrauLic systems
chapter 9 operating efficiencies of pumps and motors
chapter 10 controL system design
chapter 11 performance anaLysis
chapter 12 systems management
Introduction :
The first edition of this book was intended to provide knowledge of hydraulic components, their operating characteristics and available circuit arrangements to assist in the design of hydraulic systems for a range of applications. For some circuits it is important to predict the dynamic performance of the overall system particularly where closed loop control is being employed. For this purpose and to provide a general understanding of how parameters vary transiently analytical methods are developed that provide techniques for studying the dynamics of systems. In this second edition these features have been retained and expanded upon so as to eval uate the performance of some hydrostatic transmission examples. In the period since the first edition there has been a considerable expansion in the use of digital computers for control purposes which has been accompanied by developments in the instrumentation field and use of electromechanical valves. This technology often involves closed loop control methods for example, the control of motor speed in a hydrostatic transmission. This raises issues of dynamic performance and stability, areas that are expanded in this second edition. It is useful to have an understanding of the mechanical losses in pumps and motors and a section has been added to model frictional processes in a typical hydrostatic motor which shows the effects of friction on torque and mechanical efficiency.
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