Method and system for multiple servo motor control using a single control loop

摘要

The solution involves the use of two or more motors to drive a common mechanism. The single control loop includes a position sensing device coupled to only a first of the plurality of servo motors and generating a position signal. A signal comparator receives the position signal and compares the position signal with a predetermined desired position based on a desired motion profile. The difference from the actual position and the motion profile is output as a position error signal. A signal converter receives the position error signal and derives a conversion signal based on the error signal. The conversion signal is provided to a plurality of signal amplifiers, which in turn are coupled to the plurality of servo motors. The amplifiers provide power to the motors for driving the mechanical load.