ELECRONIC MOTOR TORQUE CONTROL FOR POSITIVE DISPLACEMENT PUMPS

摘要

Disclosure is made of a method for electronic polar attenuation of torqueprofile for positive displacement pumps by a processor where the attenuatedtorque profile is compared with the shaft displacement angle of the pump inputshaft. The processor then signals a motor to power a pump with the result ofpumping at a constant pressure at the full range of the designed system flowvolume. In addition to the attenuated torque profile, the processor can alsoaccount for the response time of the pump drive, the motor inductivereactance, system inertia, application characteristics of the pump, andregenerative energy during deceleration of the pump.