A hydraulic system controls the transmission of energy. It transforms
the mechanical energy of a prime motor into fluid energy. It controls
the fluid configuration and transforms the fluid energy into mechanical
work at specified locations. Hydraulic systems feature high power
density, sensitive response and precision of control, especially when
operating under computer control. Thus, they have been widely used as
the energy transmission control systems in aircraft, ships, construction
machinery, machine tools and others. Therefore, it is indispensable for
a mechanical engineer to become versed with hydraulic control
technology. The technology is mainly associated with fluid mechanics and
control theories, but it is related to the wider field of engineering as
well.
This book provides a comprehensive treatment of the analysis and design
of hydraulic control systems which will be invaluable for practising
engineers, as well as undergraduate and graduate students specializing
in mechanical engineering. Firstly, the fundamental concepts of
hydraulic control systems are addressed, and illustrated by reference to
applications in the field of aviation engineering. Secondly, the fluid
mechanics necessary for the comprehension of hydraulic elements are
provided. The technology of the hydraulic components composing hydraulic
control systems is addressed, the key focus being on how to apply
theoretical concepts into the design and analysis of hydraulic
components and systems. Finally, there is a discussion on fundamental
control technology and its application to hydraulic servo systems. This
includes the formation of hydraulic servo systems, basic control
theorems, methods identifying the dynamic characteristics of hydraulic
actuator systems, and a design method for hydraulic control systems.
Numerical exercises are provided at the end of each chapter.
