초록 ▼

An adaptive motor pulsing apparatus for a driven element positioning system is disclosed which divides the available time between recurring motor on periods and motor off periods, and which also varies the duty cycle of the motor during successive on periods in order to provide precise positioning c

An adaptive motor pulsing apparatus for a driven element positioning system is disclosed which divides the available time between recurring motor on periods and motor off periods, and which also varies the duty cycle of the motor during successive on periods in order to provide precise positioning control. The final approach uses a “nudging”technique which increases the duty cycle by increments until forward motion of the driven element is detected.

대표청구항 ▼

A destination-finding control system for a direct current motor which moves a driven element, comprising: means for establishing a destination for the driven element; means for controlling the approach of the driven element to the destination including: (a) means for providing a series of timed, alt

A destination-finding control system for a direct current motor which moves a driven element, comprising: means for establishing a destination for the driven element; means for controlling the approach of the driven element to the destination including: (a) means for providing a series of timed, alternating motor-available and motor-unavailable periods which alternate continuously until the destination is reached, the motor being capable of receiving driving energy only during the motor-available periods; and (b) means for varying the amount of driving energy received by the motor during separate motor-available periods, while maintaining the same interval between the starting times of successive motor-available periods.