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公开(公告)号：US4825904A
公开(公告)日：1989-05-02
申请号：US182349
申请日：1988-04-18
CPC分类号： F16K31/0682 , F16K31/082 , Y10T137/8242
摘要： A flow control valve assembly including a valve having open and closed positions and a limited angle torque motor having two angular rotor positions corresponding to the open and closed valve positions that are stable in the absence of an applied electrical signal. The valve motor includes magnetic pole pieces forming a concentric shell around the motor shaft that include air gaps, disposed generally parallel to the axis of rotation of the shaft. Pole blades adjacent the rotor are magnetically linked to the pole pieces by flanges disposed at the rotor ends. Two alternative minimum reluctance flux paths are provided for a permanent magnet that is mounted on the rotor with its poles transverse to the axis of rotation. The two minimum reluctance paths provide the stable rotor positions. A magnetic flux sensor disposed in or proximate one of the air gaps is employed with a relatively high frequency electrical signal to determine relative rotor and valve positon. A current signal is applied to the stator coil of the motor to actuate the valve. The interaction of the magnetic field of the permanent magnet with the fields produced by the low and higher frequency electrical signals generate the actuation and rotor position responses, respectively.
摘要翻译： 一种流量控制阀组件，其包括具有打开和关闭位置的阀和具有对应于在没有施加电信号的情况下是稳定的打开和关闭阀位置的两个角转子位置的有限角度转矩电动机。 阀马达包括形成围绕电动机轴的同心壳的磁极片，其包括大致平行于轴的旋转轴线设置的气隙。 与转子相邻的杆叶片通过设置在转子端部的凸缘与极片磁连接。 为安装在转子上的永磁体提供两个可选的最小磁通通路，其永磁体横向于旋转轴线。 两个最小磁阻路径提供稳定的转子位置。 采用布置在其中一个气隙中或靠近其中一个气隙的磁通量传感器，具有较高频率的电信号以确定相对的转子和阀位。 电流信号被施加到电动机的定子线圈以致动阀。 永磁体的磁场与由低频和高频电信号产生的场的相互作用分别产生致动和转子位置响应。
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公开(公告)号：US4510403A
公开(公告)日：1985-04-09
申请号：US579784
申请日：1984-02-13
申请人： Robert D. Vanderlaan , Richard Grau
发明人： Robert D. Vanderlaan , Richard Grau
摘要： A 2-pole limited angle torque motor including a rotor assembly having one or more permanent magnets which are magnetized in the diametrical direction and a stator assembly having a pair of stator magnetic pole blades surrounded by a high density layer wound stator coil, with stator pole flanges at opposite ends of the stator magnetic pole blades which create a cross flux through the stator and rotor assemblies that produces a limited angle turning torque in the motor. The permanent rotor magnets along with stator magnetic poles and magnetic housing produce a magnetic reluctance torque that can be controlled to obtain a desired magnetic centering or de-centering spring rate for the rotor at a particular torque or power level. A magnetically saturating flux path may also be made to occur in the motor at the end of the rotational design stroke of the motor to provide a magnetic stop for the rotor shaft.
摘要翻译： 一种二极限角转矩电动机，包括具有一个或多个在径向磁化的永磁体的转子组件和定子组件，该定子组件具有由高密度层卷绕的定子线圈包围的一对定子磁极叶片，定子极 在定子磁极刀片的相对端处的法兰，其产生通过定子和转子组件的交叉磁通，其在电动机中产生有限的角度转动转矩。 永久转子磁体与定子磁极和磁性壳体一起产生磁阻转矩，其可被控制以在特定扭矩或功率水平下为转子获得期望的磁心定心或去定心弹簧刚度。 在电动机的旋转设计行程结束时，磁饱和磁通路径也可能发生在电动机中，以提供用于转子轴的磁性停止。
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公开(公告)号：US4809742A
公开(公告)日：1989-03-07
申请号：US182400
申请日：1988-04-18
申请人： Richard Grau
发明人： Richard Grau
CPC分类号： H01F7/145 , F16K37/0041 , G01B7/003 , Y10T137/8242
摘要： An electromechanical valve assembly incorporates an electromechanical actuator, such as a limited angle torque motor or solenoid, to open or close the valve in response to a direct current or low frequency electrical signal. A valve position sensor detects the valve position in response to a second, relatively high frequency electrical signal. The actuator and sensor are electrically connected in parallel so that the valve may be actuated and the valve position may be determined through a single pair of electrical leads. The position sensor preferably includes an electrical coil having a reactance that varies with incident magnetic flux, the magnitude of which depends on valve position.
摘要翻译： 机电阀组件包括机电致动器，例如有限角力矩电动机或螺线管，以响应于直流或低频电信号来打开或关闭阀。 阀位置传感器响应于第二相对高频率的电信号来检测阀位置。 致动器和传感器并联电连接，使得阀可以被致动并且阀位置可以通过一对电引线来确定。 位置传感器优选地包括具有随着入射磁通而变化的电抗的电线圈，电流线圈的大小取决于阀位置。
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