Patent ID: 7610136

Claim:
A controller for a work implement of a construction machine, comprising: a manipulating signal input unit including a target value computing section for generating an operation target value for the work implement based on a manipulating signal input from a manipulating unit for manipulating the work implement; a target value correcting unit for correcting the generated operation target value; and an instruction signal output unit for outputting an instruction signal to an actuator for driving the work implement according to the corrected target value, wherein the target value correcting unit comprises a vibration characteristic determining unit that estimates vibration characteristics of the construction machine based on a characteristic frequency and a damping coefficient corresponding to a posture of and a load to the work implement, and a vibration suppressing unit that corrects the operation target value generated by the target value computing section to another target value that has inverse vibration characteristics to the estimated vibration characteristics based on the characteristic frequency and the damping coefficient to thereby suppress vibrations of the construction machine.