公开(公告)号：US09448462B2

公开(公告)日：2016-09-20

申请号：US14170276

申请日：2014-01-31

Applicant: Raytheon Company

Inventor： Amy M. Yoshida ,  Thomas J. Kostrzewa ,  Eric T. Hughes ,  Michael L. Brest ,  Eric J. Griffin ,  Jerry Hershberg

IPC: G03B9/08

CPC classification number: G03B9/08 ,  H02P25/032 ,  H02P25/034

Abstract: A drive mechanism configured to drive a thermally isolated actuator between two positions. The drive mechanism includes a rotary actuated motor configured to rotatably drive a motor member, and a drive member coupled to the motor member and having a drive arm configured to responsively move from a first position to a second position upon rotation of the motor member. An actuator is responsive to movement of the drive arm moved from the first position to the second position. A drive circuit is configured to generate a pulse width modulated (PWM) drive signal configured to controllably drive the motor, the PWM drive signal having a first duty cycle configured to advance the drive arm from the first position, and having a second duty cycle different than the first duty cycle as the drive arm approaches the second position. The drive signal may be removed before the drive arm engages a hard stop. The drive mechanism may comprise at least one sensor configured to determine a position of the drive arm proximate the first position and proximate the second position. The actuator is thermally isolated from the drive arm in both the first position and the second position.

Abstract translation: 驱动机构，其构造成在两个位置之间驱动热隔离的致动器。 驱动机构包括：旋转驱动马达，其构造成可旋转地驱动马达构件;以及驱动构件，其联接到所述马达构件并且具有构造成在所述马达构件旋转时响应地从第一位置移动到第二位置的驱动臂。 致动器响应于从第一位置移动到第二位置的驱动臂的移动。 驱动电路被配置为产生被配置为可控制地驱动电动机的脉宽调制（PWM）驱动信号，PWM驱动信号具有第一占空比，其被配置为使驱动臂从第一位置推进，并且具有不同的第二占空比 比驱动臂接近第二位置时的第一占空比。 在驱动臂接合硬停止之前可以移除驱动信号。 所述驱动机构可以包括至少一个传感器，所述至少一个传感器被配置为确定所述驱动臂在所述第一位置附近并且靠近所述第二位置的位置。 致动器在第一位置和第二位置都与驱动臂热隔离。

公开(公告)号：US20140361713A1

公开(公告)日：2014-12-11

申请号：US14170276

申请日：2014-01-31

Applicant: Raytheon Company

Inventor： Amy M. Yoshida ,  Thomas J. Kostrzewa ,  Eric T. Hughes ,  Michael L. Brest ,  Eric J. Griffin ,  Jerry Hershberg

IPC: H02P7/06

CPC classification number: G03B9/08 ,  H02P25/032 ,  H02P25/034

Abstract: A drive mechanism configured to drive a thermally isolated actuator between two positions. The drive mechanism includes a rotary actuated motor configured to rotatably drive a motor member, and a drive member coupled to the motor member and having a drive arm configured to responsively move from a first position to a second position upon rotation of the motor member. An actuator is responsive to movement of the drive arm moved from the first position to the second position. A drive circuit is configured to generate a pulse width modulated (PWM) drive signal configured to controllably drive the motor, the PWM drive signal having a first duty cycle configured to advance the drive arm from the first position, and having a second duty cycle different than the first duty cycle as the drive arm approaches the second position. The drive signal may be removed before the drive arm engages a hard stop. The drive mechanism may comprise at least one sensor configured to determine a position of the drive arm proximate the first position and proximate the second position. The actuator is thermally isolated from the drive arm in both the first position and the second position.

Abstract translation: 驱动机构，其构造成在两个位置之间驱动热隔离的致动器。 驱动机构包括：旋转驱动马达，其构造成可旋转地驱动马达构件;以及驱动构件，其联接到所述马达构件并且具有构造成在所述马达构件旋转时响应地从第一位置移动到第二位置的驱动臂。 致动器响应于从第一位置移动到第二位置的驱动臂的移动。 驱动电路被配置为产生被配置为可控制地驱动电动机的脉宽调制（PWM）驱动信号，PWM驱动信号具有第一占空比，其被配置为使驱动臂从第一位置推进，并且具有不同的第二占空比 比驱动臂接近第二位置时的第一占空比。 在驱动臂接合硬停止之前可以移除驱动信号。 所述驱动机构可以包括至少一个传感器，所述至少一个传感器被配置为确定所述驱动臂在所述第一位置附近并且靠近所述第二位置的位置。 致动器在第一位置和第二位置都与驱动臂热隔离。