| 摘要 |
An actuator providing substantial energy savings by using a reversible mechanical system. In particular, the actuator uses a power recovery system, particularly a screw (2) and nut (4) system, e.g. a ball-type system, wherein the pitch of the screw (2) is coarse (above 5 DEG ), or a smooth shaft system. A number of motors (9) may be placed at the ends of the screw or inside it when it is hollow. The reversibility of the coarse pitch screw/nut system allows a large portion of the electrical energy to be fed back to the supply grid or stored in a capacitor (14) during load deceleration phases. The actuator has many uses, particularly in robots. |
