SYSTEM AND METHOD FOR DYNAMIC SELF-SENSING OF DIELECTRIC ELASTOMER ACTUATORS
    4.
    发明公开
    SYSTEM AND METHOD FOR DYNAMIC SELF-SENSING OF DIELECTRIC ELASTOMER ACTUATORS 有权
    系统和方法的介电弹性作动器动态自传感

    公开(公告)号:EP2399304A1

    公开(公告)日:2011-12-28

    申请号:EP10744003.4

    申请日:2010-02-18

    IPC分类号: H01L41/00 B25J19/00 B81B3/00

    CPC分类号: H01L41/042 H02N2/062

    摘要: A system and method is provided for determining the capacitance between electrodes of an artificial muscle or dielectric elastomer actuator (DEA). The method comprises measuring the voltage difference between the electrodes of the DEA, the first derivative of that voltage with respect to time, and the total instantaneous current through the DEA, then calculating the capacitance of the DEA as the difference between the total instantaneous current through the DEA and the product of the voltage between the electrodes and an error term, divided by the first derivative of the voltage between the electrodes with respect to time. The capacitance may then be used to derive estimates of the leakage current, charge upon the DEA, and/or the physical state of the DEA, thereby implementing self-sensing to allow closed-loop feedback control of DEA actuation.

    PASSIVELY SWITCHED CONVERTER AND CIRCUITS INCLUDING SAME
    6.
    发明公开
    PASSIVELY SWITCHED CONVERTER AND CIRCUITS INCLUDING SAME 审中-公开
    无源开关稳压器和电路的订单

    公开(公告)号:EP2766982A1

    公开(公告)日:2014-08-20

    申请号:EP12840724.4

    申请日:2012-10-15

    IPC分类号: H02M7/06

    CPC分类号: H02M3/24 H02M3/335 H02N2/181

    摘要: The invention provides a passive converter comprising an input for electrical coupling to an intermittent or variable power source, an output for electrical coupling to load, and a conversion circuit for converting from a first voltage level of the input to a second voltage level suitable for the output, wherein the conversion circuit includes a passive switching circuit adapted to passively couple the input to the output when the input exceeds a first threshold and decouple the input from the output when the input falls below a second threshold. In particular, the passive switching circuit preferably comprises a spark gap, thyristor and avalanche diode, breakover diode, discharge tube, or a thyristor operated as breakover diodes. Circuits and dielectric elastomer generator (DEG) systems including the passive converter are also disclosed.