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    • 6. 发明申请
    • DRIVE DEVICE
    • 驱动装置
    • WO0235534A2
    • 2002-05-02
    • PCT/JP0109287
    • 2001-10-23
    • SONY COMP ENTERTAINEMENT INC
    • OHTSU HIROSHIAMEMIYA HIRONOBUSUGIYAMA MASAKI
    • G11B7/085G11B7/09G11B7/095G11B21/08G11B21/12H02P8/00H02P8/14
    • G11B7/0945G11B7/0956G11B21/083G11B21/12
    • A drive device has a feed mechanism that causes a control object to move in order to control the positionning of the control object, a motor that serves as the drive source of said feed mechanism, and a control means that controls this motor. The control means has an operation history memory unit that stores the operation history of whether the motor is doing an initial start or restart, and a command selection unit that selects control commands and outputs them to said motor based on information stored in said operation history memory unit. Because intermittent operation that repeatedly drives and stops the motor occurs when there is a restart, the thermal shutdown associated with overheating of the driver IC is avoided, and any difference between the feed amount due to the control means and the actual feed amount can be prevented.
    • 驱动装置具有使控制对象移动的进给机构,以控制控制对象的定位,用作所述进给机构的驱动源的马达以及控制该马达的控制装置。 控制装置具有操作历史存储单元,其存储电动机正在进行初始启动或重新开始的操作历史;以及命令选择单元,其基于存储在所述操作历史存储器中的信息选择控制命令并将其输出到所述电动机 单元。 因为重启时重复地驱动和停止电动机的间歇操作,所以避免与驱动器IC的过热有关的热关断,并且可以防止由于控制装置引起的供给量与实际进给量之间的差异 。
    • 7. 发明申请
    • ELECTRONIC CONTROLLER FOR MIRROR ASSEMBLY
    • 电子控制器用于镜子组件
    • WO01010011A1
    • 2001-02-08
    • PCT/AU2000/000905
    • 2000-07-31
    • B60R1/072H02P7/29H02P8/14
    • B60R1/07H02P8/14
    • A permanent magnet DC variable length driven electric motor (not shown) is typically used to actuate the mechanism of a vehicle rear view mirror (not shown). When the rotating portion of such a motor is rotating as a result of the application of pulses of current, the motor also generates a voltage that is proportional to its angular velocity, known as its back EMF. Thus during the time the current pulse is not being applied, a back EMF is generated by the motor which is proportional to the angular velocity of the rotating portion of the motor. The back EMF of the motor can be measured and using a calibration table the motor's angular velocity can be determined and compared with a desired angular velocity of the motor. If for example, measured back EMF corresponds to an angular velocity higher than that desired, the on time of the current pulse driving the motor can be reduced the next time the motor is energised. Correspondingly, if the measured back EMF is indicative of a lower than desired angular velocity of the motor, the on time of the current pulse driving the motor is increased. This closed loop measurement and control technique is not affected by the load on the motor. The magnitude of back EMF is generated merely by the angular velocity of the motor and not the amount of work it is doing. A method and means for control of the speed and the positioning of the rotating portion of the motor is possible.
    • 永磁直流可变长度驱动电动机(未示出)通常用于致动车辆后视镜(未示出)的机构。 当这种电机的旋转部分由于施加电流脉冲而旋转时,电动机还产生与其角速度成比例的电压,称为其反电动势。 因此,在不施加电流脉冲的时间期间,电动机产生与电动机的旋转部分的角速度成正比的反电动势。 可以测量电机的反电动势,并使用校准表,确定电机的角速度并与电机的所需角速度进行比较。 例如,如果测量的反电动势对应于高于期望值的角速度,则电动机下一次通电时可以减小驱动电动机的电流脉冲的导通时间。 相应地,如果测量的反电动势表示低于电动机的期望角速度,则驱动电动机的电流脉冲的接通时间增加。 该闭环测量和控制技术不受电机负载的影响。 反电动势的大小仅由电动机的角速度产生,而不是其正在进行的工作量。 用于控制电动机的旋转部分的速度和定位的方法和装置是可能的。
    • 8. 发明申请
    • DIRECT DRIVE WITH INTERNAL SENSORS AND A CONTROL DEVICE
    • 具有内部传感器和控制装置的直接驱动
    • WO9837624A3
    • 1998-11-26
    • PCT/DE9800516
    • 1998-02-20
    • DREIFKE LARS
    • DREIFKE LARS
    • H02K11/215H02K41/02H02P8/14H02P21/00
    • H02P8/14H02K11/215H02K41/033
    • The invention relates to a direct drive with internal sensors to detect linear, planar and/or rotating movements which operate according to the step motor principle, or to the usual rotary step motors. Hall-effect sensors are arranged inside the iron cores of the magnetic systems, the signals of which are used to control the magnetic current and/or to determine the position x, y, alpha. In this way, the maximum power levels are controlled by precisely those types of winding currents which result in exactly those magnetic currents required by the reference variable, which in turn improves dynamics. Since the magnetic current measured is related to the number of gear tooth overlaps, the position between the active unit and the passive unit can be determined to the micrometer. Owing to the numerous resulting parameter improvements, the application of magnetic current and detection of positions by means of internal sensors are in principle suitable for all step motors in the cost-benefit range ranging from open timing chains to traditional control mechanisms. Magnetic current application and detection of positions by internal sensors are also of particular interest to direct drive systems with a large positioning range, such as planar hybrid step motors mounted on air bearings in which neither phase-rotation indicators nor incremental length measuring systems can be used for position detection because of the two-dimensional movement of the active unit.
    • 本发明涉及具有内部传感器的直接驱动器,用于检测根据步进电动机原理操作的线性,平面和/或旋转运动,或者涉及通常的旋转步进电动机。 霍尔效应传感器布置在磁系统的铁芯内部,其信号用于控制磁流和/或确定位置x,y,α。 以这种方式,通过精确地控制这些类型的绕组电流来控制最大功率电平,这导致准确地参考参考变量所需的那些磁流,这进而改善动态。 由于测量的磁流量与齿轮齿重叠有关,所以可以将有源单元和被动单元之间的位置确定为千分尺。 由于大量的参数改进,磁流的应用和通过内部传感器检测位置原则上适用于从开放正时链到传统控制机制的成本效益范围内的所有步进电机。 直接驱动内部传感器的位置检测也是特别关注的一个特点是引导具有较大定位范围的驱动系统,例如安装在空气轴承上的平面混合式步进电机,其中既不使用相位旋转指示器也不能使用增量长度测量系统 用于由于有源单元的二维运动而进行的位置检测。