| 摘要 |
A vibration controller controls vibrations generated in a driven object included in a system subject to vibrations due to the dynamic unbalance or eccentricity of a rotating member driven for rotation by an electric motor. An angular position transforming unit ( 45 ) and an angular velocity transforming unit ( 47 ) transform the output signal of a rotating motion measuring means (C 1 ) into an angular position and an angular velocity, respectively. A sine calculating unit ( 55 ) calculates the sine of an angle obtained by adding up the angular position and a predetermined phase angle provided by a phase adjusting unit ( 49 ) by an adder ( 53 ). A multiplier ( 61 ) calculates the product of the output of a gain adjusting unit ( 57 ) that multiplies the output of the sine calculating unit ( 55 ) by a predetermined gain and the output of a multiplier ( 59 ) that calculates the square of the angular velocity. Again adjusting unit ( 57 ') multiplies the output of a sine calculating unit ( 55 ') by a predetermined gain. An adder ( 68 ) adds up the respective outputs of the multiplier ( 61 ) the gain adjusting unit ( 57 ') and a specified torque calculating unit.
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