An investigation into miniature hydraulic actuation and control techniques for use on high-speed reciprocating mechanisms

The research presented in this thesis relates to an actuation and control concept whereby miniature hydraulic mechanisms are sequenced by rotary spool valves. The objectives of the work were to advance the technology, further develop the control technique and improve the engineering of the associated hardware. to enable the concept to be applied to high speed reciprocating motions used in manipulative machinery. This necessitated improved and predictable actuator and valve performance to overcome deficiencies apparent in previous hardware. [Continues.]