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US07919901B2 Low-voltage, large displacement stepping actuator and method for fabricating the same 失效
低电压,大位移步进致动器及其制造方法

Low-voltage, large displacement stepping actuator and method for fabricating the same
Abstract:
The current invention provides a stepping actuator, achieving large range up to ±35 μm with low operating voltages of 15V or lower and large output forces of up to ±110 μN. The actuator has an in-plane-angular deflection conversion which allows achieving step sizes varying from few nanometers to few micrometers with a minor change in the design. According to certain embodiments of the invention, the stepping actuator comprises a geometrical structure with a displacement magnification ratio of between 0.15 and 2 at operating voltages of 15V or lower. The present invention also provides a method for forming such stepping actuators.
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