one contemplated embodiment the closed loop controller uses a feed forward control term to set the initial pump speed to a predetermined pump speed that yields the desired fluid flow the predetermined pump speed can be selected or set based on pump performance mapping and environmental conditions such as ambient temp fluid temp altitude and pressure setting of the pressure regulator if such predetermined pump speed setting is considered as a base or normal operating condition the control algorithm can also monitor system pressure and use a relatively long term feedback for example via an integral control term having a relatively large time constant that is based on system pressure to slowly adapt and adjust the fluid flow rate through the pump and maintain predetermined and or desired flow margin above a maximum flow consumption of the system in this way the pressure can automatically control overall system pressure a block diagram for a control 500 that controls the operation of the motor 318 and or a displacement of the pump 320 as applicable to the system 300 as shown in fig3 is illustrated in fig4 as can be appreciated the control 500 may adjust motor speed when the motor is associated with a fixed displacement pump to control fluid flow or may alternatively control.