JPH01180168U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ないし第７図は本考案の一実施例を示す
もので、第１図は一部破断して示す誘導電動機の
側面図、第２図は同正面図、第３図は取付脚の圧
電素子取付部分の拡大断面図、第４図は制御構成
を示すブロツク図、第５図は振動モードを示す図
、第６図は取付脚の振動周波数と圧電素子の出力
電圧（振幅）との関係を示す図、第７図は取付脚
の振動と圧電素子に印加する電圧との関係を示す
図である。また、第８図及び第９図は本考案の夫
々異なる他の実施例を示す第２図相当図及び第５
図相当図である。そして、第１０図及び第１１図
は従来の一般的な誘導電動機を示す夫々第１図及
び第２図相当図、第１２図は制振のための従来構
成例を示す第１図相当図である。 図中、１１は電動機本体（回転機本体）、１２
はフレーム（外穀）、１５，１６は取付脚、１８
は固定子、２１は回転子、２４は圧電素子、２５
は振動解析装置、２６は制御装置である。 Figures 1 to 7 show an embodiment of the present invention, in which Figure 1 is a partially cutaway side view of the induction motor, Figure 2 is a front view of the same, and Figure 3 is a view of the mounting leg. FIG. 4 is a block diagram showing the control configuration, FIG. 5 is a diagram showing the vibration mode, and FIG. 6 is a diagram showing the relationship between the vibration frequency of the mounting leg and the output voltage (amplitude) of the piezoelectric element. FIG. 7 is a diagram showing the relationship between the vibration of the mounting leg and the voltage applied to the piezoelectric element. In addition, FIGS. 8 and 9 are views corresponding to FIG. 2 and 5 showing other different embodiments of the present invention, respectively.
It is a figure equivalent figure. 10 and 11 are views corresponding to FIGS. 1 and 2, respectively, showing a conventional general induction motor, and FIG. 12 is a view equivalent to FIG. 1, showing an example of a conventional configuration for damping vibrations. be. In the figure, 11 is the electric motor body (rotating machine body), 12
is the frame (outer grain), 15 and 16 are the mounting legs, 18
is a stator, 21 is a rotor, 24 is a piezoelectric element, 25
2 is a vibration analysis device, and 26 is a control device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回転機本体と、この回転機本体の外穀に設けら
れた取付脚とを具備した回転機において、前記取
付脚の振動を検出する振動検出手段と、前記取付
脚に設けられた圧電素子と、前記振動検出手段に
より検出した振動に応じた電圧を前記圧電素子に
印加してこの圧電素子を前記取付脚の振動と逆位
相で振動させる制御装置とを具備してなる回転機
の制振装置。 A rotating machine comprising a rotating machine main body and a mounting leg provided on the outside of the rotating machine main body, a vibration detection means for detecting vibration of the mounting leg, a piezoelectric element provided on the mounting leg, A vibration damping device for a rotating machine, comprising: a control device that applies a voltage corresponding to the vibration detected by the vibration detection means to the piezoelectric element to cause the piezoelectric element to vibrate in a phase opposite to the vibration of the mounting leg.