Servo pump control system and method

    公开(公告)号:US10458403B2

    公开(公告)日:2019-10-29

    申请号:US14900044

    申请日:2014-06-27

    Abstract: A servo pump control system (100) and a corresponding servo pump control method are disclosed. The servo pump control system (100) comprises a pressure controller (101) configured to receive a first control signal, and directly or indirectly provide a second control signal to the electric motor; and the pressure controller (101) configured to automatically commission at least one parameter without any manual adjustment.

    Anti-ripple injection method and apparatus and control system of a pump

    公开(公告)号:US10527035B2

    公开(公告)日:2020-01-07

    申请号:US14900010

    申请日:2014-06-27

    Abstract: An anti-ripple injection method for injecting an anti-ripple signal into a control system of a pump is disclosed. The control system controls an electric motor via an electric motor drive, and the electric motor drives the pump. The anti-ripple signal causes pressure ripples in the pump output to be at least partially cancelled. The anti-ripple injection method includes: injecting an anti-ripple signal of any waveform into the control system, the anti-ripple signal being represented by the following equation: f(θ)=ΣmAm cos(mθ+θm), wherein θ is the rotation angle of the motor shaft, m is the order of a signal harmonic in the anti-ripple signal, Am and θm are parameters with respect to the mth signal harmonic. A control system of a pump including the anti-ripple injection apparatus, and a pump system including the control system are also disclosed.

    ACTUATOR DRIVER CIRCUIT
    4.
    发明申请
    ACTUATOR DRIVER CIRCUIT 有权
    执行器驱动电路

    公开(公告)号:US20160163441A1

    公开(公告)日:2016-06-09

    申请号:US14558902

    申请日:2014-12-03

    CPC classification number: H01F7/064 H01F7/081 H01F7/1615

    Abstract: A circuit for driving an actuator including a closing coil and an opening coil, the circuit including a first electrical switch, a second electrical switch, a third electrical switch, a first diode, a second diode, a third diode, and a capacitor electrically connected to a second terminal of the third electrical switch. The circuit is structured such that controlling the state of the first, second, and third transistors causes current flowing through the circuit to flow through one of the closing coil and the opening coil and to not flow through the other of the closing coil and the opening coil.

    Abstract translation: 一种用于驱动包括闭合线圈和开启线圈的致动器的电路,所述电路包括第一电开关,第二电开关,第三电开关,第一二极管,第二二极管,第三二极管和电连接的电容器 到第三电开关的第二端子。 电路被构造成使得控制第一,第二和第三晶体管的状态导致电流流过电路流过闭合线圈和开启线圈中的一个,并且不流过闭合线圈和开口中的另一个 线圈

    Method and apparatus for pulse-width modulation of a variable-frequency drive

    公开(公告)号:US10951149B2

    公开(公告)日:2021-03-16

    申请号:US14900033

    申请日:2014-06-27

    Abstract: The present invention disclose a method and apparatus for pulse-width modulation (PWM) of a variable-frequency drive (VFD), the method comprising: for each sector of a space vector graph for PWM of the VFD, identifying at least two possible clamping phases in switching between the vectors in the sector; comparing currents in multiple phases in at least one PWM cycle; in the sector of the space vector graph corresponding to the PWM cycle, determining the possible clamping phase with the maximum current in the at least two possible clamping phases; and clamping the determined possible clamping phase with the maximum current.

    Actuator driver circuit
    6.
    发明授权
    Actuator driver circuit 有权
    执行器驱动电路

    公开(公告)号:US09478338B2

    公开(公告)日:2016-10-25

    申请号:US14558902

    申请日:2014-12-03

    CPC classification number: H01F7/064 H01F7/081 H01F7/1615

    Abstract: A circuit for driving an actuator including a closing coil and an opening coil, the circuit including a first electrical switch, a second electrical switch, a third electrical switch, a first diode, a second diode, a third diode, and a capacitor electrically connected to a second terminal of the third electrical switch. The circuit is structured such that controlling the state of the first, second, and third transistors causes current flowing through the circuit to flow through one of the closing coil and the opening coil and to not flow through the other of the closing coil and the opening coil.

    Abstract translation: 一种用于驱动包括闭合线圈和开启线圈的致动器的电路,所述电路包括第一电开关,第二电开关,第三电开关,第一二极管,第二二极管,第三二极管和电连接的电容器 到第三电开关的第二端子。 电路被构造成使得控制第一,第二和第三晶体管的状态导致电流流过电路流过闭合线圈和开启线圈中的一个,并且不流过闭合线圈和开口中的另一个 线圈

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