Power supply compensation for an actuator

摘要

A mechanism for compensating power to a motor or actuator. Compensation may counter the effects of changing voltage levels of power to the motor and varying temperatures at the motor. An output of a wave generator may be input to a comparator along with a level of voltage representing the temperatures and voltage levels. An output may be a power signal for driving the motor at a constant speed and/or torque which can increase a maintenance-free lifetime of the motor and actuator.

主权项

1. A power compensator for an actuator of a heating, ventilation and air conditioning system (HVAC), comprising:
a first source of voltage; a second source of voltage; an operational amplifier; and wherein: the first source comprises a waveform generator; the second source of voltage comprises a calculation circuit for power to an actuator; an output of the first source of voltage is connected to a non-inverting input of the operational amplifier; an output of the second source of voltage is connected to an inverting input of the operational amplifier; an output of the operational amplifier is a third source of voltage that goes to the actuator; an output of the third source of voltage maintains a constant speed or torque of the actuator; and an output of the second source of voltage provides a signal that has an amplitude incorporating compensation in the output of the operational amplifier, for temperature of the actuator and a voltage of a power supply for the actuator.