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    • 4. 发明专利
    • Vibration generator
    • 振动发电机
    • JP2014074612A
    • 2014-04-24
    • JP2012221358
    • 2012-10-03
    • Emitsuku Kkエミック株式会社
    • INOSHITA YOSHIOHARADA KAZUYA
    • G01M7/02
    • H02K33/00B06B1/045G01M7/022H02K9/04H02K33/16
    • PROBLEM TO BE SOLVED: To provide a vibration generator which reduces a power consumption as a whole vibration test device and which does not breakdown even when the exciting force of a vibration generator is increased and the size of the vibration generator is increased.SOLUTION: A vibration generator 10 is configured to include: a movable part 30 in which an object to be tested is mounted; and a fixing part 11 having a magnetic path member 12. The magnetic path member 12 has a magnet 14 and a yoke 16 having magnetic permeability. The imparting of the drive current to drive coils 32, 36 which are inserted into the clearance part of the movable part 30 so as to form a magnetostatic field in the clearance part of the magnetic path member 12 causes the movable part 30 to vibrate. A control device 50 is configured to control the number of rotations of a cooling blower 44 for cooling at least either one of the magnet 14 and the drive coils 32, 36 based on at least either temperature of the magnet and the drive coils 32, 36 which are measured by temperature measuring means.
    • 要解决的问题:提供一种降低作为整体振动试验装置的功耗的振动发生器,即使当振动发生器的激励力增加并且振动发生器的尺寸增加时也不会破坏。解决方案:A 振动发生器10被构造成包括:可移动部件30,其中安装有要被测试物体; 以及具有磁路部件12的固定部分11.磁路部件12具有磁铁14和具有磁导率的磁轭16。 将驱动电流传递到驱动线圈32,36,驱动线圈32,36插入到可动部30的间隙部分中,以在磁路部件12的间隙部分中形成静磁场,使可动部30振动。 控制装置50被配置为基于磁体和驱动线圈32,36的至少一个温度来控制用于冷却磁体14和驱动线圈32,36中的至少一个的冷却鼓风机44的旋转数 其由温度测量装置测量。
    • 5. 发明专利
    • Hydraulic system
    • 液压系统
    • JP2014025590A
    • 2014-02-06
    • JP2013188966
    • 2013-09-12
    • Kokusai Keisokki Kk国際計測器株式会社
    • MATSUMOTO SHIGERUMIYASHITA HIROSHIMURAUCHI KAZUHIROTSUNODA MITSUO
    • F15B11/02G01M7/02
    • G01M7/022G01N3/36G01N2203/0008G01N2203/0048
    • PROBLEM TO BE SOLVED: To provide a hydraulic system which can be driven by a high frequency without the need of a large-sized pump or a hydraulic oil tank.SOLUTION: The hydraulic system includes: a reversely operable hydraulic pump including a first suction/discharge port and a second suction/discharge port; a hydraulic cylinder unit having a piston, a sleeve whose internal space is sectioned into a first pressure chamber and a second pressure chamber by the piston, and a piston rod connected to the piston and projected to the outside of the sleeve at a distal end; first piping connecting the first pressure chamber and the first suction/discharge port; second piping connecting the second pressure chamber and the second suction/discharge port; a bypass pipe communicating the first piping and the second piping; and an accumulator provided in the middle of the bypass pipe, for applying a prescribed pressure to the first pressure chamber and the second pressure chamber. The size of the prescribed pressure is set to be larger than the lowest pressure required for driving the hydraulic cylinder unit.
    • 要解决的问题:提供一种可以高频驱动而不需要大型泵或液压油箱的液压系统。解决方案:液压系统包括:反向可操作的液压泵,其包括第一吸入/ 排出口和第二吸入口; 具有活塞的液压缸单元,其内部空间通过活塞分为第一压力室和第二压力室的套筒,以及连接到活塞并在远端突出到套筒外部的活塞杆; 连接第一压力室和第一吸入口的第一配管; 连接第二压力室和第二吸入口的第二配管; 连通第一管道和第二管道的旁通管道; 以及设置在旁通管的中间的蓄能器,用于对第一压力室和第二压力室施加规定的压力。 规定压力的大小被设定为大于驱动液压缸单元所需的最低压力。
    • 7. 发明专利
    • Test specification design method for random vibration test
    • 用于随机振动试验的试验规范设计方法
    • JP2009216386A
    • 2009-09-24
    • JP2006179552
    • 2006-06-29
    • Mitsubishi Electric CorpMitsubishi Electric Logistics Corporation Co Ltd三菱電機ロジスティクス株式会社三菱電機株式会社
    • MAEZAWA HIDEKAZUARAKAWA KOJI
    • G01M7/02
    • G01M7/022
    • PROBLEM TO BE SOLVED: To provide a method for designing a proper random vibration test specification by finding a shortening rate of a test time by using a peculiar accumulated fatigue calculation method, while applying correspondingly a linear damage rule.
      SOLUTION: This test specification design method for random vibration has a step of dividing a PSD data of the random vibration into a prescribed number of divisions, a step of counting random vibration waveforms in each division, a step of obtaining a distribution histogram A by performing multiplication by an each-divisional constitution ratio of the distribution histogram in each division, to be added respectively, a step of obtaining a distribution histogram B by deleting a data existing outside a range of a prescribed value, from the histogram A, a step of normalizing the distribution histogram A with an equivalent acceleration G0, to find a corresponding equivalent frequency NA, a step of normalizing the distribution histogram B with the same equivalent acceleration G0 as that in case of the distribution histogram A, to find a corresponding equivalent frequency NB, and a step of finding a ratio of the equivalent frequency NA to the equivalent frequency NB.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供一种通过使用特殊的累积疲劳计算方法通过找到测试时间的缩短率来设计适当的随机振动测试规范的方法,同时应用线性损伤规则。 解决方案:用于随机振动的该测试规范设计方法具有将随机振动的PSD数据划分为规定数目的分割步骤,对每个划分中的随机振动波形进行计数的步骤,获得分布直方图 A分别通过以每个划分中的分布直方图的每个分割构成比进行乘法,分别添加从直方图A中删除存在于规定值范围之外的数据的步骤,获得分布直方图B, 以等效加速度G0归一化分布直方图A的步骤,以找到对应的等效频率NA;以与分配直方图A相同的等效加速度G0对分布直方图B进行归一化的步骤,以找到对应的 等效频率NB,以及找到等效频率NA与等效频率NB的比率的步骤。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Arithmetic device of vibromotive force
    • 振动力的算术装置
    • JPS59104525A
    • 1984-06-16
    • JP21379882
    • 1982-12-06
    • Meidensha Electric Mfg Co Ltd
    • TERAJIMA MASAYUKIFUSHIMI KEIKO
    • G01L5/00B06B1/16G01M7/02
    • G01M7/022
    • PURPOSE:To generate an accurate vibromotive force waveform, by calculating a vibromotive force on a basis of the addition value of excitation direction components at every moment for each axis. CONSTITUTION:For example, when taking notice of one axis, an encoder OP generates reference pulses, and an encoder PP outputs a pulse train at intervals corresponding to the rotation number. A counter CON is reset by the reference pulse to count the output of the encoder PP, and a digital value is outputted. A frequency-digital converter F/D outputs an angular speed omega corresponding to the frequency. A memory M1 outputs the value of cosalpha which is designated in accordance with the output of the counter CON in case of vertical excitation. A memory M2 outputs the value of cos(alpha+90 deg.) which is designated in accordance with the output of the counter CON in case of horizontal excitation. The value of cosalpha or cos(alpha+90 deg.) is multiplied by a moment Mr of eccentricity in a multiplying circuit I1 to attain a vibromotive force f1 in the vertical direction of one axis.
    • 目的:通过根据每个轴的每个时刻的激励方向分量的相加值来计算振动体力来产生准确的振动波动波形。 构成:例如,当注意到一个轴时,编码器OP产生参考脉冲,并且编码器PP以对应于旋转数的间隔输出脉冲序列。 计数器CON由参考脉冲复位,以对编码器PP的输出进行计数,并输出数字值。 频数转换器F / D输出对应于频率的角速度ω。 存储器M1输出在垂直激励的情况下根据计数器CON的输出指定的cosα的值。 存储器M2输出在水平激励的情况下根据计数器CON的输出指定的cos(α+ 90度)的值。 在乘法电路I1中,cosalpha或cos(α+ 90度)的值乘以偏心的力矩Mr,以获得在一个轴的垂直方向上的振动力f1。