SLIDING MODE CONTROL OF A VARIABLE DISPLACEMENT PUMP

抄録

This paper considers the application of SMC to the control of an axial displacement piston pump. The objective of the control is to maintain pump pressure independent of varying load or system parameter changes. A DC motor directly attached to the pump swash plate is used to interface the computer control signal to the pump. The results of a theoretical and experimental study are presented and show that a modified SMC algorithm can be used to provide improved dynamic and steady state performance when compared to a standard PID controller. Ripple due to “chatter” of the SMC around its steady state conditions is apparent which requires additional examination.