To electronically attenuate essential variation factors of pump torque for generating motor torque output to maintain output pressure from a pump constant.

Disclosure is made of a precision hydraulic energy delivery system that directly couples the pump to a primary power source (motor) and a related motor control. The system provides flow control of a hydraulically driven machine without the use of downstream devices by employing motion control algorithms in the motor control. Hydraulic pressure output in pump head simultaneously follows by employing motion control algorithms in the motor control. Control features are integrated into the system by using control algorithms and subroutines specifically developed for the control system coupled to the pump.