4-STATE PHASE LOCKED SPEED REGULATOR
Original Publication Date: 1992-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
There is a need for reducing costs in low performance applications such as paper transports. To this end, disclosed in Figures 1 and 2 is a low cost digital phase lock speed regulator (PLSR) that is designed for single-speed, one-direction applications such as paper transports which uses the phase difference between system clock pulses and motor-derived tach pulses to control the power input to the motor to be proportional to this phase difference.