| 摘要 |
<p>An electrostriction actuator (10) comprises upper and lower electrostriction boards (12, 14), having electrodes (12a, 12b; 14a, 14b) individually on either side thereof, and a conductive shim (16) interposed between the inside electrodes (12b, 14b). The actuator (10) has a fixed end at one end thereof and a free end for bending movement at the other end. An amplifier (18) for supplying driving voltage to the actuator (10) is an inverted amplifier, whose output terminal is connected to the shim (16), so that an output voltage is supplied to the inside electrodes (12b, 14b). The outside electrode (12a) of the upper electrostriction board (12) is connected to a power source (not shown) for supplying constant voltage (+E0) to the amplifier (18), and the outside electrode (14a) of the lower electrostriction board (14) is connected to a power source (not shown) for supplying constant voltage (-E0) to the amplifier (18).</p> |
