会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明公开
    • Control circuit for driving an electric actuator, in particular an electric fuel injector for an internal-combustion engine
    • 用于驱动电动致动器,特别是电动燃料喷射阀的内燃机的控制电路
    • EP1521284A2
    • 2005-04-06
    • EP04023146.6
    • 2004-09-29
    • C.R.F. Società Consortile per Azioni
    • Faggioli, EugenioZenzon, Renato
    • H01H47/32F02D41/20H02M3/156
    • H01H47/325F02D41/20F02D2041/2013F02D2041/2027F02D2041/2058H01F7/1844H01F2007/1888H02M3/156
    • The control circuit comprises:

      a direct voltage source (1);
      a chopper circuit (2) arranged between the source (1) and an electric actuator (3); and
      an electronic control circuit (4) designed to apply to the chopper circuit (2) a command signal (CS) of the PWM type, with a predefined ON/OFF switching period (P) and a predetermined duty cycle, for a likewise predefined activation time (t i ), so as to produce a flow, within the electric actuator (3), of a correspondingly choppered current (I) having a nominal duration corresponding to the activation time (t i ).

      The control circuit is characterized in that the unit (4) is arranged to:

      detect the last whole or complete switching period (P) included within the activation time (t i );
      allocate in accordance with a predefined duty cycle the final interval (t f ) comprising said last complete switching period (P) and any subsequent fraction of a switching period (R) included within said activation time (t i ), and
      correspondingly drive the chopper circuit (2) in this final interval (t f ).
    • 所述控制电路包括: - 一个直流电压源(1); - 源极(1)之间,并电致动器(3)布置在斩波电路(2); 和 - 在电子控制电路(4)设计成适用于斩波器电路(2)的PWM类型的命令信号(CS),与预定的ON / OFF切换周期(P)和预定占空因数,对于同样 预定义的激活时间(TI),以便产生一个流,电致动器(3)内,相应直升机将电流(I)的具有标称的持续时间对应于激活时间(TI)。 所述控制电路被在DASS模具单元(4),其特征被布置为: - 检测负载整个或完整的开关周期(P)包括在激活时间(t I)之内; - 分配在雅舞蹈具有预定占空比的最终间隔(TF)包括所述负载完整的开关周期(P)和一个开关周期(R)中的任何随后的级分包括在所述激活时间(TI)内,以及 - 相应地驱动所述斩波 电路(2)在该最终间隔(TF)。
    • 8. 发明公开
    • A self-compensating piezoelectric actuator for a control valve
    • 塞尔伯斯坦压力容器公司
    • EP1637728A1
    • 2006-03-22
    • EP05110981.7
    • 2001-06-28
    • C.R.F. Società Consortile per Azioni
    • Montuschi, MarioFaggioli, Eugenio
    • F02M59/46F02M51/06F02M53/04F02M61/16H01L41/053F16K31/00F16K35/02
    • F02M63/0031F02D41/2096F02M51/0603F02M63/0026F02M63/0066F16K31/007H01L41/053
    • An actuator device for a control valve is described and comprises a piezoelectric actuating member (12) for bringing about the movement of a closure member (30) of the valve between an open position and a closure position; the member (12) has a reference portion (20) for connection to a fixed portion (26) of the device and a free portion (24) for connection to the closure member (30), the free portion (24) being movable relative to the reference portion (20) as a result of mechanical deformations produced in the actuating member (12) by the piezoelectric effect.
      The reference portion (20) of the actuating member (12) is controllable selectively between a free condition in which it is movable relative to the fixed portion (26), and a condition in which it is locked in a reference position and is fixed firmly to the fixed portion (26) of the device by magnetic attraction.
    • 描述了用于控制阀的致动器装置,并且包括用于使阀的关闭构件(30)在打开位置和关闭位置之间移动的压电致动构件(12) 所述构件(12)具有用于连接到所述装置的固定部分(26)的参考部分(20)和用于连接到所述封闭构件(30)的自由部分(24),所述自由部分(24)可移动相对 作为通过压电效应在致动构件(12)中产生的机械变形的结果,到参考部分(20)。 致动构件(12)的参考部分(20)可选择性地在相对于固定部分(26)可移动的自由状态之间进行控制,以及将其锁定在参考位置并被牢固地固定的状态 通过磁吸引到装置的固定部分(26)。