UNiGY PhD employs pump-control software to produce precise flow rates and pressures required by application by continually sensing demand and energizing pump only as required, lowering energy consumption, waste heat generation, and noise. Torque regulating drive controller is powered by 100 MHz DSP, which allows compensation in real time for nonlinear conditions like fluid compression, pump slip, fluctuating flow resistance, and windage, as well as viscous and coulomb losses.