| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a linear actuator driving device which reduces or eliminates the occurrence of trouble such as the continuous generation of abnormal noise by a collision and the deterioration of a machine stopper with a needle continuously colliding with the machine stopper by external vibration. <P>SOLUTION: The linear actuator driving device for controlling the drive of the needle 23 by feeding a current corresponding to a driving command to the linear actuator 20 having the needle 23 which can reciprocate and a pair of machine stoppers 26a and 26b provided at both sides in a reciprocating direction of the needle 23 is provided with a vibration sensor 3 for detecting the vibration of a vehicle body frame frm to which a linear actuator 20 is attached, and a determination unit 11 for determining whether excessive vibration is applied based on the vibration detected by the vibration sensor 3. When the determination unit 11 determines that the excessive vibration is applied, the drive of the needle 23 is controlled by the abutting driving command Ic to pass a current where the needle 23 is pushed against the machine stopper 26b on the gravity direction side of the pair of machine stoppers 26a and 26b. <P>COPYRIGHT: (C)2013,JPO&INPIT |
