Circuit for driving magnetostrictive device
    12.
    发明公开
    Circuit for driving magnetostrictive device 失效
    Schaltungsanordnung zum Steuern eines magnetostriktivesGerät

    公开(公告)号:EP0919291A2

    公开(公告)日:1999-06-02

    申请号:EP98400162.8

    申请日:1998-01-27

    CPC classification number: B06B1/0223 B06B2201/58 B06B2201/74

    Abstract: Provided is a circuit for driving a magnetostrictive device including: a high voltage interrupting circuit section (C 2 ,R 1 ) for interrupting an instantaneously leaking high voltage depending on the switching operation of a power switch (SW); a voltage storage section (C 1 ) for rectifying an input voltage for a half of the positive cycle and storing it; a switching circuit section (Q 1 ) for supplying the voltage stored in the voltage storage section to the magnetostrictive device; and a voltage discharging circuit section (R 5 ) for discharge the voltage remaining in the voltage storage section when the power is interrupted.

    Abstract translation: 提供一种用于驱动磁致伸缩装置的电路,包括:根据电源开关(SW)的开关操作中断瞬时泄漏的高电压的高电压中断电路部分(C2,R1); 电压存储部(C1),用于将输入电压整流为正周期的一半并将其存储; 用于将存储在电压存储部中的电压提供给磁致伸缩装置的开关电路部分(Q1) 以及电源放电电路部(R5),用于在电力中断时放电电压存储部中剩余的电压。

    A DAMPING AND ACTUATING APPARATUS COMPRISING MAGNETOSTRICTIVE MATERIAL, A VIBRATION DAMPENING DEVICE AND USE OF SAID APPARATUS
    14.
    发明申请
    A DAMPING AND ACTUATING APPARATUS COMPRISING MAGNETOSTRICTIVE MATERIAL, A VIBRATION DAMPENING DEVICE AND USE OF SAID APPARATUS 审中-公开
    包含磁阻材料的阻尼和动作装置,振动阻尼装置和使用装置

    公开(公告)号:WO2004078367A1

    公开(公告)日:2004-09-16

    申请号:PCT/FI2004/000118

    申请日:2004-03-03

    Abstract: The invention relates to devices that produce displacements and/or forces (defined as actuators), when a magnetic field source(s) is (are) placed in such a way that the resulting magnetic field is of suitable strength and orientation in relation to the actuating element made from a Magneto-Mechanical Adaptive (MMA) material, so as to produce the desired displacement of the MMA element; or to devices that dampen mechanical vibrations by absorbing the vibration energy into an MMA element and/or by converting the vibration energy into electric power in the device and/or senses displacement, velocity or acceleration. The electric energy can be dissipated to heat or led out from the device. In the latter case, the device works as a power generator. The principle of using the devices as sensors is also described. The MMA material here is defined as a material whose dimensions change when a magnetic field or stress is applied to it, based on twin boundary or austenite-martensite phase boundary motion or magnetostriction.

    Abstract translation: 本发明涉及产生位移和/或力(定义为致动器)的装置,当磁场源被放置成使得所得到的磁场相对于 由MMA材料制成的致动元件,以便产生MMA元件的期望位移; 或通过将振动能量吸收到MMA元件中和/或通过将振动能量转换成装置中的电力和/或感测位移,速度或加速度来衰减机械振动的装置。 电能可以消散以加热或从设备引出。 在后一种情况下,该装置用作发电机。 还描述了将装置用作传感器的原理。 这里的MMA材料被定义为基于双边界或奥氏体 - 马氏体相边界运动或磁致伸缩而施加磁场或应力的尺寸变化的材料。

    The output driving circuit for controlling the variable load ultrasonic transducer

    公开(公告)号:JP2008536657A

    公开(公告)日:2008-09-11

    申请号:JP2007558011

    申请日:2006-01-27

    CPC classification number: B06B1/0246 B06B2201/58 B06B2201/70

    Abstract: 本発明は、圧縮性流体を含む変動負荷に強力な超音波エネルギーを与えるために特に使用するための強力な(たとえば>500W)超音波発生器に関する。 発生器は、パルス幅変調器と結合した可変周波数三角波形発生器を含む。 パルス幅変調器からの出力は絶縁ゲート型バイポーラトランジスタ(IGBT)のゲートと結合し、このIGBTが信号を増幅し、その信号を、磁気ひずみ変換器を駆動するために使用されるコイルに与える。 一つの態様では、信号が与えられたのち、0〜600VDCの高電圧がIGBTのコレクタとエミッタとの間に与えられる。 IGBTの出力は、+/-600Vの電圧の方形波形である。 この電圧は、超音波変換器に巻き付けられたコイルに送られる。 電圧は変換器上に磁場を作り出し、その磁場の結果として変換器の磁気ひずみ性が変換器を振動させる。 増幅素子としてのIGBTの使用は、低出力超音波変換器で一般に使用され、このような高出力の負荷変動用途では過熱し、故障するであろうシリコン制御整流器(SCR)回路の必要をなくす。

    METHOD AND SOURCE FOR GENERATING ACOUSTIC OSCILLATIONS
    19.
    发明申请
    METHOD AND SOURCE FOR GENERATING ACOUSTIC OSCILLATIONS 审中-公开
    用于产生声学振荡的方法和来源

    公开(公告)号:WO1982002682A1

    公开(公告)日:1982-08-19

    申请号:PCT/SU1981000013

    申请日:1981-02-02

    CPC classification number: B06B1/0215 B06B2201/58

    Abstract: A method of generating acoustic oscillations based on the shock excitation of a magnetostrictive converter with a pulse electric signal. The electric signal is generated in the form of unidirectional half-cycles of cosinusoidal voltage having the length of one to two half-cycles of acoustic oscillations of the loaded converter. The frequency of the electric pulses is chosen equal or multiple to the frequency of the acoustic oscillations. A source of acoustic oscillations comprises a power supply unit (7), a pulse frequency unit (10) and an energy storage capacitor (6) to the plates of which the exciting winding (2) of a magnetostrictive converter (1) is connected through the power circuit of a commutating element (5). The source comprises as well an additional exciting winding (3) placed also on the magnetostrictive converter (1) and concordantly to the winding (2), an additional commutating element (8) and a unit (9) for control of the commutating elements. The additional winding (3) is connected to the plates of the capacitor (6) through the power circuit of the commutating element (8) and through the power supply unit (7), whereas the output of the pulse frequency unit (10) is connected to the input of the unit (9) for control of the commutating elements, the outputs of that unit being connected correspondingly to the control circuits of the commutating elements (5 and 8). The source of acoustic oscillations is intended preferably for ultrasound cleaning of heat exchangers from sediments.

    Abstract translation: 基于具有脉冲电信号的磁致伸缩转换器的冲击激励产生声振荡的方法。 电信号是以负载转换器的声振荡的一到两个半周期长度的顺时针电压的单向半周期的形式产生的。 选择电脉冲的频率与声振荡的频率相等或相等。 声振荡源包括一个电磁源单元(7),一个脉冲频率单元(10)和一个储能电容器(6),其中磁致伸缩转换器(1)的励磁绕组(2)通过 换向元件(5)的电源电路。 该源还包括还放置在磁致伸缩转换器(1)上并且一致地连接到绕组(2)的额外的励磁绕组(3),用于控制换向元件的附加换向元件(8)和单元(9)。 附加绕组(3)通过整流元件(8)的电源电路和电源单元(7)连接到电容器(6)的板,而脉冲频率单元(10)的输出为 连接到用于控制换向元件的单元(9)的输入,该单元的输出对应于换向元件(5和8)的控制电路连接。 声波振荡的来源最好用于从沉积物超声波清洗热交换器。

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