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    • 2. 发明授权
    • Control valve with a self-compensating piezoelectric actuator
    • 具有自补偿压电执行器的控制阀
    • US06552473B2
    • 2003-04-22
    • US09893469
    • 2001-06-29
    • Mario MontuschiEugenio Faggioli
    • Mario MontuschiEugenio Faggioli
    • H01L4108
    • F02M63/0031F02D41/2096F02M51/0603F02M63/0026F02M63/0066F16K31/007H01L41/053
    • An actuator for a control valve includes a piezoelectric actuating member for bringing about the movement of a closure member of the valve between an open position and a closure position; the member has a reference portion for connection to a fixed portion of the device and a free portion for connection to the closure member, the free portion being movable relative to the reference portion as a result of mechanical deformations produced in the actuating member by the piezoelectric effect. The reference portion of the actuating member is controllable selectively between a condition in which it is locked in a reference position and is fixed firmly to the fixed portion of the device, and a free condition in which it is movable relative to the fixed portion.
    • 用于控制阀的致动器包括用于使阀门的关闭构件在打开位置和关闭位置之间运动的压电致动构件; 所述构件具有用于连接到所述装置的固定部分的参考部分和用于连接到所述封闭构件的自由部分,所述自由部分可相对于所述参考部分移动,所述自由部分由于在所述致动构件中由所述压电 影响。 致动构件的参考部分可选择性地在其被锁定在参考位置中并且牢固地固定到装置的固定部分的状态之间以及相对于固定部分可移动的自由状态下是可控的。
    • 4. 发明授权
    • Control circuit for driving an electric actuator, in particular an electric fuel injector for an internal-combustion engine
    • 用于驱动电致动器的控制电路,特别是用于内燃机的电动燃料喷射器
    • US07224565B2
    • 2007-05-29
    • US10956071
    • 2004-10-04
    • Eugenio FaggioliRenato Zenzon
    • Eugenio FaggioliRenato Zenzon
    • H01H47/00H01F13/00
    • H01H47/325F02D41/20F02D2041/2013F02D2041/2027F02D2041/2058H01F7/1844H01F2007/1888H02M3/156
    • A control circuit that drives an electronic actuator. The control circuit includes a direct voltage source, a chopper circuit arranged between the source and an electric actuator, and an electronic control circuit designed to apply to the chopper circuit a command signal of the PWM type, with a predefined ON/OFF switching period and a predetermined duty cycle, for a predefined activation time, to produce a flow, within the electric actuator, of a correspondingly switched current having a nominal duration corresponding to the activation time. The control circuit detects the last whole or complete switching period included within the activation time, splits, in accordance with a predefined duty cycle, the final interval including the last complete switching period and any subsequent fraction of a switching period included within the activation time, and drives the chopper circuit in this final interval.
    • 驱动电子执行器的控制电路。 所述控制电路包括直流电压源,布置在所述源极和电致动器之间的斩波电路,以及电子控制电路,被设计成以预定义的ON / OFF开关周期向所述斩波电路施加所述PWM型指令信号;以及 对于预定义的激活时间,预定的占空比在电致动器内产生具有对应于激活时间的标称持续时间的相应切换电流的流。 控制电路检测包括在激活时间内的最后整个或完整的切换周期,根据预定义的占空比拆分包括最后完整切换周期的最后间隔以及包括在激活时间内的切换周期的任何后续部分, 并在最后的间隔内驱动斩波电路。