ACTUATOR AND SENSOR DEVICE BASED ON ELECTROACTIVE POLYMER

    公开(公告)号:EP3586380A1

    公开(公告)日:2020-01-01

    申请号:EP18706672.5

    申请日:2018-02-11

    IPC分类号: H01L41/04 H01L41/193

    摘要: An electroactive material actuator and sensor (22) is actuated with an actuation signal having an activation period for charging the actuator and a de-activation period for discharging the actuator. A parallel resistance (Rp) of the actuator is determined by sensing a steady state current during the activation period and a series capacitance (Cs) of the actuator is determined based on a charge flow during charging of the actuator at the beginning of the activation period. A series resistance (Rs) is obtained by controlling a current through the actuator with an oscillating profile so that a phase relationship of the actuator between current and voltage can be measured. An oscillating current sink is used to enable circuit component measurements, which implement sensing functionality.