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    • 8. 发明授权
    • Control system for a linear actuator including magnetic bearings for
levitating a robot arm
    • 用于线性致动器的控制系统,包括用于悬浮机器人臂的磁性轴承
    • US5720010A
    • 1998-02-17
    • US699342
    • 1996-08-19
    • Katsuhide WatanabeYoichi KanemitsuShinichi MoriyamaNaoji Hiraki
    • Katsuhide WatanabeYoichi KanemitsuShinichi MoriyamaNaoji Hiraki
    • B25J13/00B25J9/18B25J18/02B25J19/00F16C32/04F16C39/06G05B19/19H02P25/06G05B15/00G05B19/00
    • F16C32/0444G05B19/19F16C2300/62G05B2219/45083G05B2219/49271
    • A control system for controlling a linear actuator including magnetic bearings for levitating a robot arm and a pulse motor for linearly driving the arm in a non-contact manner is disclosed, which comprises a displacement detection unit including displacement sensors, first and second calculation units, moving amount detection unit and adding circuit. The displacement detection unit detects displacement values of the arm from a reference posture, the first calculation unit calculates guiding (y), levitation (z), roll (p), pitching (q), and yaw (r) control current values in response to the displacement values and provides guiding, levitation, roll, pitching, and yaw control current signals (, , , , ). The moving amount detecting circuit detects a moving amount (X.sub.0) of the arm from a reference position in response to an operation of the pulse motor, and provides a compensation current value (.DELTA.Iq") proportional to the moving amount, and the adding circuit adds the compensation current value (.DELTA.Iq") to the pitching control current signal (). The second calculation unit, in response to the guiding, levitation, roll and yaw control current signals (, , , ) and the added pitching control current signal (+.DELTA.Iq"), calculates drive current control values to compensate drive current flowing through the magnetic bearings.
    • 公开了一种用于控制线性致动器的控制系统,包括用于悬浮机器人臂的磁轴承和用于以非接触方式线性驱动臂的脉冲电机,其包括位移检测单元,其包括位移传感器,第一和第二计算单元, 移动量检测单元和加法电路。 位移检测单元从参考姿势检测臂的位移值,第一计算单元计算响应中的引导(y),悬浮(z),滚动(p),俯仰(q)和偏航(r)控制电流值 提供位移值,并提供引导,悬挂,滚动,俯仰和偏航控制电流信号(+ Z,+ Z,+ Z,+ Z,+ Z)。 移动量检测电路响应于脉冲电动机的操作从参考位置检测臂的移动量(X0),并且提供与移动量成比例的补偿电流值(DELTA Iq“),并且添加 电路将补偿电流值(DELTA Iq“)添加到俯仰控制电流信号(+ Z)。 第二计算单元响应于引导,悬挂,转向和偏转控制电流信号(+ Z,+ Z,+ Z,+ Z)和增加的俯仰控制电流信号(+ Z + DELTA Iq“),计算 驱动电流控制值来补偿流经磁轴承的驱动电流。