There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller (10) is provided with a current contro...

Provided is an active damping device (X) that suppresses vibrations of an object (T) to be damped by utilizing a reaction force generated when an auxiliary mass (1) is driven by an actuator (2). The active damping device (X) includes a stiffness/damping co...

To provide a novel linear actuator driving device which has achieved power saving in correcting offset displacement produced due to self weight of the moving element without any increase in device size, a linear actuator driving device includes an electrom...

An A/D conversion device has a first A/D conversion unit (73) configured to convert an analog vibration signal (sg1) input from a vibration detecting sensor (1) to detect the vibration into a digital value (digi1) and, a second A/D conversion unit (74) con...