| 摘要 |
System, method, and apparatus for controlling bi-directional drive current through an actuator. The method includes receiving a direction control signal (502,520,608), manipulating one or more devices (508,526,610,612,614,616) to establish at least one switchable positive current path (534,620) or at least one switchable negative (536,622) current path through an actuator (512,618) based at least in part on the direction control signal (502,520,608), providing feedback (504,522) based at least on current (538,540,617,619) associated with the actuator (512,618), controlling the current (538,540,617,619) based at least in part on the feedback (504,522) and manipulating one or more devices to establish at least one positive current path and at least one negative current path through an actuator via pulse width modulation control. |
