Patent ID: 7208904
Filing Date: 2007-04-24
Classification: B41P,G05B,H02P,Y10T

Abstract:
1. A position controller for a motor, the motor having an advance control input for moving the motor in an advance direction and a retard input for moving the motor in a retard direction, the controller additionally comprising: an advance operator input push button for providing a control input; a first advance digital counter, arranged to count in response to the control input, a number of cycles of a reference clock that equal a predetermined advance period of time (TG generating a first motor advance signal to be applied to the motor advance control input for a time period at least equal to TG a retard digital counter, arranged to count after expiration of time TG generating a motor retard signal to be applied to the motor retard control input for a time period at least equal to TG a second advance digital counter, arranged to count after expiration of time TG generating a second motor advance signal to be applied to the motor advance control input for a time period at least equal to TG