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    • 45. 发明公开
    • Open-loop step motor control system
    • Schrittmotorregelsystem mit offener Schleife
    • EP1178599A1
    • 2002-02-06
    • EP01121258.6
    • 1996-09-11
    • ALARIS Medical Systems, Inc.
    • Holdaway, Charles R.
    • H02P8/04H02P8/24H02P8/22
    • H02P8/22H02P8/04H02P8/24H02P8/32
    • A motor control system that reduces noise while reducing power requirements but providing sufficient torque. A one-phase-on drive mode modified to microstep between "one phase on" positions is used to accelerate the motor in a non-linear manner to a maximum speed. The microstep drive modes have a constant period, and the step rate of the motor is increased by decreasing the number of microsteps in succeeding steps of the motor. A modified full step waveform maintains the motor at the maximum speed, where the current to one winding of the step motor changes polarity within one motor step while the other remains approximately constant providing increased smoothness in the drive and reduced noise. The polarity changes in accordance with the inductance and the compliance voltage of the motor. A one-phase-on waveform modified to include microsteps between "one phase on" positions later decelerates the motor in a non-linear manner, and the motor stops in a detent position until another waveform of steps in delivered to the motor.
    • 一种电机控制系统,可减少噪音,同时降低功率需求,但提供足够的扭矩。 在“一相”位置之间修改为微步的单相驱动模式用于以非线性方式将电动机加速到最大速度。 微步驱动模式具有恒定周期,并且通过减少马达的后续步骤中的微步数量来增加马达的步进速率。 改进的全步波形将电动机保持在最大速度,其中步进电机的一个绕组的电流在一个电动机阶跃期间改变极性,而另一个保持大致恒定,从而提高驱动器的平滑度和降低的噪声。 极性根据电机的电感和顺从电压而变化。 修改为包括“一相”位置之间的微步的单相接通波形稍后以非线性方式使电动机减速,并且电动机停止在制动位置,直到传递到电动机的另一个步骤波形。
    • 48. 发明公开
    • Rotational mounting for an aircraft seat
    • Drehbare Befestigungsvorrichtungfüreinen Flugzeugsitz
    • EP0968916A3
    • 2001-12-05
    • EP99110144.5
    • 1999-05-25
    • MARTIN-BAKER AIRCRAFT CO. LTD.
    • Ruff, Stephen Anthony George
    • B64D11/06B60N2/00B60N2/14F16M11/08
    • B64D11/0689B60N2/01558B60N2/143B60N2/146Y02T50/46
    • Disclosed is an arrangement for mounting an item (in the preferred example a seat) on a surface for rotational movement relative thereto. A stator element (18) is fixed to the mounting surface and has a plurality of stator contact surfaces. A rotor element (16) is secured to the item (seat) and is mounted on the stator element (18) for rotation relative thereto about an axis of rotation substantially perpendicular to the plane of the mounting surface. The rotary element has a plurality of rotor contact surfaces and the arrangement comprises means to lock releasably the rotor element in at least one predetermined position relative to the stator arrangement. The arrangement is such that each rotor contact surface engages a respective stator contact surface in the or each said predetermined position only. The arrangement seeks to minimise mass whilst providing a structure having direct low paths between the item (seat) and the mounting surface so as to minimise the extent to which the structure is subjected to bending loads.
    • 公开了一种用于将物品(在优选示例中为座椅)安装在用于相对于其旋转运动的表面上的布置。 定子元件(18)固定在安装表面上并具有多个定子接触表面。 转子元件(16)固定在物品(座)上,并安装在定子元件18上,以绕其旋转大约垂直于安装表面平面的旋转轴线。 旋转元件具有多个转子接触表面,并且该装置包括将转子元件可释放地锁定在相对于定子装置的至少一个预定位置的装置。 该布置使得每个转子接触表面仅接合在每个所述预定位置中的相应定子接触表面。 该装置旨在最小化质量,同时提供在物品(座椅)和安装表面之间具有直接低路径的结构,以便最小化结构遭受弯曲载荷的程度。