Abstract
Abstract
Actuators with high resolution and high range are always in demand for critical applications such as space applications, machining, and medical equipment. A dual-resolution actuator that has a coarse motion segment and a fine motion segment in itself that runs through a common drive system was designed. A coupling mechanism is employed to engage and disengage with the coarse motion of the actuator, enabling the use of coarse motion only when required. The actuator can achieve the target in any of three methods: (1) directly through fine motion, (2) utilizing a combination of fine and coarse motion without the need to overshoot the target value, and (3) employing both fine and coarse motion with a need for overshoot of the target value. An intelligent algorithm employing multiple techniques to address sensor-induced delays and enhance runtime efficiency was developed and tested on the realized actuator. This paper describes the techniques adopted and the sequence of conditions used to enable the actuator to reach the target in the shortest time and minimum possible steps.