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公开(公告)号：US5670854A
公开(公告)日：1997-09-23
申请号：US570871
申请日：1995-12-12
CPC分类号： B62D5/046 , H02P21/141 , H02P21/26
摘要： A control system for an induction motor of the present invention independently commands the torque current component and the exciting current component of a stator current group supplied to the stator of an induction motor so as to feed-back control the amplitude and phase of the stator current group. The torque current component is commanded to control the output torque of the induction motor in correspondence with the output of a steering force sensor for detecting the steering force. According to an electric power steering apparatus using an induction motor controlled by the control system, a permanent magnet is not used for the motor so additional equipment such as a clutch is not required. Consequently, the structure can be simplified and the size of the unit can be reduced. Further, manual steering operation can be performed in the case of failure.
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公开(公告)号：US4257102A
公开(公告)日：1981-03-17
申请号：US953773
申请日：1978-10-19
申请人： Isao Horiba , Yasuo Kuwabara , Hiroshi Takagi , Shigeru Satou
发明人： Isao Horiba , Yasuo Kuwabara , Hiroshi Takagi , Shigeru Satou
CPC分类号： A61B6/032 , Y10S378/901
摘要： An apparatus for axial transverse tomography using piercing radiation such as X-ray and .gamma.-ray for displaying a tomographic image concerning variation of radiation absorption values at a given section of a subject under examination, comprising: a scanner effecting a revolution-scanning around said subject at uniform angles while maintaining constant relative positions of a radiation source and a radiation detector with said subject intervening therebetween; an input device for setting a region of interest for being enlarged based on parameters of central angle, inter-center distance and radius ratio, to locally enlarge said tomographic image; co-ordinate system transforming circuitry for carrying out, on information within said region of interest outputted from radiation detector, a transformation of co-ordinate system corresponding to enlarged co-ordinates, from information obtained by the scanner and outputted by the radiation detector and also from the set parameters; and convolution circuitry for carrying out a convolution operation on the resulting information representing the trnsformation of co-ordinate system.
摘要翻译： 一种使用穿刺辐射（例如X射线和γ射线）进行轴向横断层摄影的装置，用于显示关于受检对象的给定部分处的辐射吸收值变化的断层图像，该扫描图像包括：扫描器，围绕所述 在保持恒定的辐射源和辐射探测器的相对位置的同时保持对准，所述对象插入其间; 输入装置，用于基于中心角度，中心间距离和半径比率的参数来设置用于放大的兴趣区域，以局部放大所述断层图像; 坐标系统变换电路，用于对从放射线检测器输出的所述感兴趣区域内的信息进行与放大坐标相对应的坐标系的变换，由扫描仪获得并由放射线检测器输出的信息，以及 从设定参数; 以及卷积电路，用于对表示坐标系的trns信息的结果信息执行卷积运算。
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公开(公告)号：US6163912A
公开(公告)日：2000-12-26
申请号：US139339
申请日：1998-08-24
CPC分类号： D06F37/304 , D06F37/203 , D06F39/003 , D06F2202/12 , H02P21/18 , Y02B40/52
摘要： A torque current component and an exciting current component of primary AC currents which are supplied to a stator of a three-phase induction motor are commanded independently of each other in accordance with a command rotational angular velocity and a rotational angular velocity of the three-phase induction motor rotating an agitator, and the rotational angular velocity of the three-phase induction motor is controlled by changing the magnitude and frequency of each of the primary AC currents. Furthermore, a test operation is carried out by giving the command angular velocity so as to make constant the angular velocity of the motor, and the laundry amount is estimated corresponding to an output torque of the motor in the test operation.
摘要翻译： 提供给三相感应电动机的定子的一次交流电流的转矩电流分量和励磁电流分量根据三相感应电动机的指令旋转角速度和旋转角速度彼此独立地指令 旋转搅拌器的感应电动机，并且通过改变每个主要AC电流的幅度和频率来控制三相感应电动机的旋转角速度。 此外，通过给出指令角速度以使马达的角速度恒定来进行测试操作，并且根据测试操作中的马达的输出转矩来估计衣物量。
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公开(公告)号：US5701066A
公开(公告)日：1997-12-23
申请号：US783431
申请日：1997-01-16
CPC分类号： B62D5/046 , H02P21/141 , H02P21/26
摘要： A control system for an induction motor of the present invention independently commands the torque current component and the exciting current component of a stator current group supplied to the stator of an induction motor so as to feed-back control the amplitude and phase of the stator current group. The torque current component is commanded to control the output torque of the induction motor in correspondence with the output of a steering force sensor for detecting the steering force. According to an electric power steering apparatus using an induction motor controlled by the control system, a permanent magnet is not used for the motor so additional equipment such as a clutch is not required. Consequently, the structure can be simplified and the size of the unit can be reduced. Further, manual steering operation can be performed in the case of failure.
摘要翻译： 本发明的感应电动机的控制系统独立地指定提供给感应电动机的定子的定子电流组的转矩电流分量和励磁电流分量，以便反馈控制定子电流的振幅和相位 组。 命令转矩电流分量与感应转向力的转向力传感器的输出对应地控制感应电动机的输出转矩。 根据使用由控制系统控制的感应电动机的电动助力转向装置，永磁体不用于电动机，因此不需要诸如离合器的附加设备。 因此，可以简化结构，并且可以减小单元的尺寸。 此外，在故障的情况下可以执行手动转向操作。
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