POWER TOOL WITH ANTI-KICKBACK CONTROL SYSTEM

    公开(公告)号:US20170361449A1

    公开(公告)日:2017-12-21

    申请号:US15604728

    申请日:2017-05-25

    Inventor: James E. GOBLE

    Abstract: A power tool includes a housing, a motor received in the housing, an output driven by the motor, and a control system. The control system includes a rotational motion sensor configured to generate a rotational motion signal that corresponds to a rotational motion of the housing about an axis, a current sensor configured to generate a motor current signal that corresponds to an amount of current drawn by the motor, and a control circuit that is configured to receive the rotational motion signal and the motor current signal and to control operation of the motor. The control circuit is configured: (a) to determine, based on the current signal, whether a detected kickback condition is likely to be false; (b) to determine, based upon the rotational motion signal, whether an uncontrolled kickback condition has occurred; and (c) to initiate one or more protective operations upon determining that an uncontrolled kickback condition has occurred and is not likely to be false.

    ON-AXIS MOUNTING OF AN INERTIAL MEASUREMENT UNIT (IMU) WITHIN AN OPTICAL SYSTEM
    2.
    发明申请
    ON-AXIS MOUNTING OF AN INERTIAL MEASUREMENT UNIT (IMU) WITHIN AN OPTICAL SYSTEM 有权
    光学系统中的惯性测量单元(IMU)的轴上安装

    公开(公告)号:US20170023601A1

    公开(公告)日:2017-01-26

    申请号:US15285148

    申请日:2016-10-04

    CPC classification number: G01P1/023 G01C19/08 G01P1/026

    Abstract: Techniques and architecture are disclosed for providing an optical system having an on-axis, internally mounted inertial measurement unit (IMU). In some cases, an IMU may be mounted within an interior region/cavity of an inner housing, which intern is configured to rotate within, an outer housing. In some instances, a mirror assembly may be operatively coupled with the inner housing and permitted to rotate simultaneously with the IMU. Rotation of the inner housing may be achieved, in some example cases, by use of a suitable motor. In some instances, positioning componentry may be operatively coupled with one or more of the IMU and/or mirror assembly. Improvements in mechanical stability, system dimensions, and/or protection from external/environmental hazards may be realized, in some example cases.

    Abstract translation: 公开了用于提供具有在轴内部安装的惯性测量单元(IMU)的光学系统的技术和架构。 在一些情况下,IMU可以安装在内部壳体的内部区域/空腔内,该内部构造成在外部壳体内旋转。 在一些情况下,反射镜组件可以与内壳体可操作地联接并允许与IMU同时旋转。 在一些示例性情况下,可以通过使用合适的电机来实现内壳的旋转。 在一些情况下,定位组件可以与IMU和/或镜组件中的一个或多个操作地联接。 在一些示例情况下,可以实现机械稳定性,系统尺寸和/或防止外部/环境危害的改进。

    Inertial measurement device and an aircraft including such a device
    3.
    发明授权
    Inertial measurement device and an aircraft including such a device 有权
    惯性测量装置和包括这种装置的飞机

    公开(公告)号:US08738317B2

    公开(公告)日:2014-05-27

    申请号:US13156591

    申请日:2011-06-09

    CPC classification number: G01C21/16 G01C19/34 G01C19/42

    Abstract: The present invention relates to an inertial measurement device secured to a structure of a vehicle for which it is desired to measure speeds and/or accelerations, the device comprising at least one piece of moving equipment in rotation about a stationary axis of rotation Y relative to the structure, said moving equipment including at least two measurement device having respective sensitivity axes X′ and Z′ that are mutually orthogonal and that lie in a plane perpendicular to the stationary axis of rotation Y, a motor for driving the moving equipment in rotation, device for determining the angular position of the moving equipment, device for responding to the angular position of the moving equipment to determine the projection of the measurements taken in the rotary frame of reference axes X′ and Z′ by the said at least two measurement device onto a vehicle frame of reference X and Z.

    Abstract translation: 本发明涉及一种固定在车辆结构上的惯性测量装置,该惯性测量装置希望测量速度和/或加速度,该装置包括至少一个移动设备,其围绕静止的旋转轴线Y相对于 所述移动设备包括具有彼此相互正交并位于垂直于固定旋转轴线Y的平面中的至少两个测量装置的测量装置,用于驱动移动设备旋转的电动机, 用于确定所述移动设备的角位置的装置,用于响应所述移动设备的角位置以确定在所述至少两个测量装置中在参考轴X'和Z'的旋转框架中拍摄的测量的投影的装置 到参考X和Z的车架上。

    ROTATIONAL VIBRATION GYRO
    4.
    发明申请
    ROTATIONAL VIBRATION GYRO 审中-公开
    旋转振动陀螺仪

    公开(公告)号:US20110185829A1

    公开(公告)日:2011-08-04

    申请号:US13057792

    申请日:2008-08-06

    CPC classification number: G01C19/5712 Y10T74/1282

    Abstract: A rotational vibration type gyro 1 is provided by which a detection sensitivity influence of the other axis direction on detection sensitivity in a detection axis direction. The rotational vibration type gyro 1 has: a drive weight 4, drive electrodes 3, a detection weight 5 having a pair of X-axis divisional detection weights 5A, 5A and a pair of Y-axis divisional detection weights 5B, 5B, an anchor 6, a pair of X-axis weight support springs 7A, 7A and a pair of Y-axis weight support springs 7B, 7B, a pair of X-axis weight connection springs 8A, 8A and a pair of Y-axis weight connection springs 8B, 8B, and a pair of X-axis detection electrodes 9A, 9A and a pair of Y-axis detection electrodes 9B, 9B.

    Abstract translation: 提供旋转振动型陀螺仪1,通过该旋转振动型陀螺仪1,检测轴方向上的检测灵敏度对另一轴方向的检测灵敏度的影响。 旋转振动型陀螺仪1具有:驱动锤4,驱动电极3,具有一对X轴分割检测重量5A,5A的一个检测锤5和一对Y轴分割检测重量5B,5B,锚 如图6所示,一对X轴重量支撑弹簧7A,7A和一对Y轴重量支撑弹簧7B,7B,一对X轴重量连接弹簧8A,8A和一对Y轴重量连接弹簧 8B,8B,以及一对X轴检测电极9A,9A和一对Y轴检测电极9B,9B。

    Oscillating or Low Speed Electric Machine Apparatus
    5.
    发明申请
    Oscillating or Low Speed Electric Machine Apparatus 审中-公开
    振荡或低速电机设备

    公开(公告)号:US20100058882A1

    公开(公告)日:2010-03-11

    申请号:US12545251

    申请日:2009-08-21

    CPC classification number: H02K7/1853 F03G3/08 Y10T74/1257 Y10T74/1282

    Abstract: Electric Machines (i.e., electric motors or generators) convert electricity to mechanical work (or vice versa) by applying mechanical power to the shaft of the electric machine or extracting mechanical power form the shaft of the electric machine. This restricts the electrical characteristics, such as frequency or voltage, to the movement of the shaft of the electric machine in accordance to electric machine theory. In some cases, it is desired to perform electromechanical conversion from unorthodox movement, such as pulsating movement, slow movement, or low power movement. In many cases this is not possible with even electronic control without a transmission to convert the mechanical power to a compatible motion. However, by pre-establishing the compatible speed and inertial momentum of the rotor body of the electric machine while moving the entire body of the electric machine in accordance to the incompatible movement, the mechanical energy of the movement can be readily produced or absorbed to desired electrical characteristics.

    Abstract translation: 电机(即,电动机或发电机)通过向机器的轴施加机械动力或从电机的轴提取机械动力将电力转换成机械作业(反之亦然)。 这就限制了电机理论对电机轴的运动等频率或电压等的电气特性。 在某些情况下,期望从诸如脉动运动,慢动作或低功率运动的非正常运动进行机电转换。 在许多情况下,即使进行电子控制也不可能将机械功率转换为兼容运动。 然而,通过根据不兼容的运动来预先确定电机的转子体的兼容速度和惯性动量,同时移动电机的整个主体,运动的机械能可以容易地产生或吸收到期望的 电气特性。

    Drive circuit of oscillation gyro
    6.
    发明申请
    Drive circuit of oscillation gyro 失效
    振荡陀螺驱动电路

    公开(公告)号:US20060011000A1

    公开(公告)日:2006-01-19

    申请号:US11175373

    申请日:2005-07-07

    CPC classification number: G01C19/5649 Y10T74/1229

    Abstract: The present invention provides a drive circuit of an oscillation gyro including two piezoelectric elements formed in an oscillator, which includes an adding circuit for supplying a drive signal to one side faces of the two piezoelectric elements and adding signals obtained from the other side faces opposed to the one side faces of the piezoelectric elements, and an oscillation circuit adapted to be fed back with an addition output signal obtained by the adding circuit, wherein a sine wave signal obtained as an oscillation output of the oscillation circuit is supplied to the one side faces of the two piezoelectric elements as the drive signal. Thus, the drive circuit of the oscillation gyro which obtains the stable output with the simple configuration can be provided.

    Abstract translation: 本发明提供了一种振荡陀螺仪的驱动电路,其包括形成在振荡器中的两个压电元件,该振荡陀螺仪包括用于向两个压电元件的一个侧面提供驱动信号的加法电路和从与 压电元件的一个侧面以及适用于由加法电路获得的相加输出信号反馈的振荡电路,其中作为振荡电路的振荡输出而获得的正弦波信号被提供给一个侧面 的两个压电元件作为驱动信号。 因此,可以提供以简单的结构获得稳定输出的振荡陀螺仪的驱动电路。

    Method for electronically tuning the readout vibration of a coriolis gyroscope
    7.
    发明申请
    Method for electronically tuning the readout vibration of a coriolis gyroscope 有权
    电子调谐科里奥利陀螺仪的读出振动的方法

    公开(公告)号:US20060010999A1

    公开(公告)日:2006-01-19

    申请号:US10531669

    申请日:2003-10-02

    Inventor: Werner Schroeder

    CPC classification number: G01C19/56 Y10T74/1229

    Abstract: In a method for electronic tuning of the frequency of the read oscillation to the frequency of the stimulation oscillation in a Coriolis gyro, the resonator of the Coriolis gyro has a disturbance force applied to it such that the stimulation oscillation remains essentially uninfluenced. The read oscillation is changed so that a read signal that represents the read oscillation contains a corresponding disturbance component. The frequency of the read oscillation is controlled so that the magnitude of the disturbance component contained in the read signal is a minimum.

    Abstract translation: 在科里奥利陀螺仪中将读取振荡的频率电子调谐到刺激振荡的频率的方法中,科里奥利陀螺仪的谐振器具有施加到其上的扰动力,使得刺激振荡基本上不受影响。 读取振荡被改变,使得表示读取振荡的读取信号包含相应的扰动分量。 读取振荡的频率被控制,使得包含在读取信号中的干扰分量的幅度最小。

    Magnetic fluid gyro bearing and caging mechanism
    8.
    发明授权
    Magnetic fluid gyro bearing and caging mechanism 失效
    磁流体陀螺轴承和笼式机构

    公开(公告)号:US4570507A

    公开(公告)日:1986-02-18

    申请号:US524614

    申请日:1983-08-19

    Abstract: A gyro bearing and caging mechanism in which a spherical gyro rotor is driven by an induction motor with bearing surfaces between the rotor and stator having a magnetic fluid that is held in place at discrete positions around the circumference of the rotor by permanent magnets imbedded in the spherical rotor and a movable caging plate with magnets in a surface thereof and magnetic fluid between surfaces of the caging plate and a top surface of the rotor for caging the rotor.

    Abstract translation: 一种陀螺仪轴承和笼式机构,其中球面陀螺转子由感应电动机驱动,转子和定子之间的轴承表面具有磁性流体,该磁性流体通过嵌入在转子和定子中的永磁体在转子的圆周上的离散位置处保持就位 球形转子和在其表面具有磁体的活动笼式平板和笼式板的表面之间的磁性流体和转子的顶表面用于笼罩转子。

    Seeker gyroscope having reduced cross-coupling between rotor spin and
precession
    9.
    发明授权
    Seeker gyroscope having reduced cross-coupling between rotor spin and precession 失效
    探针陀螺仪具有减小转子旋转和进动之间的交叉耦合

    公开(公告)号:US4464943A

    公开(公告)日:1984-08-14

    申请号:US388061

    申请日:1982-06-14

    CPC classification number: G01C19/30 G01C19/08 Y10T74/125 Y10T74/1282

    Abstract: A two-axis gyroscope in which precession may be effected by application of a DC current to the stationary precession windings. The rotor assembly has a pair of ring-shaped permanent magnets with their magnetic vectors aligned parallel with the gyro spin axis. This structure presents a magnetic field to the precession windings which does not change as the rotor assembly rotates. Thus the gyroscope may be precessed by application of a DC current to the precession windings. The precession windings are located along two orthogonal axes to allow precession of the gyro in two orthogonal directions.

    Abstract translation: 一种双轴陀螺仪,其中通过将DC电流施加到静止进动绕组可以进行进动。 转子组件具有一对环形永磁体,其磁矢量与陀螺旋转轴线平行排列。 该结构向进动绕组呈现磁场,转子绕组转动时不会改变。 因此,可以通过将DC电流施加到进动绕组来进行陀螺仪。 进动绕组沿两个正交轴线定位,以允许陀螺仪在两个正交方向上进动。

    Gyro motor control
    10.
    发明授权
    Gyro motor control 失效
    陀螺仪电机控制

    公开(公告)号:US4266432A

    公开(公告)日:1981-05-12

    申请号:US899352

    申请日:1978-04-24

    Abstract: In order to eliminate the day-to-day gyro drift phenomena which result from interaction of the magnetic pole position of the synchronous motor typically used to drive the gyro and the gyro wheel, an induction motor controlled by a phase locked loop referenced to an appropriate control frequency is utilized to drive the gyro.

    Abstract translation: 为了消除由通常用于驱动陀螺仪和陀螺仪轮的同步电动机的磁极位置的相互作用导致的日常陀螺仪漂移现象,由相位锁定环控制的感应电动机 控制频率用于驱动陀螺仪。

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