A novel proof-of-concept prototype Mesoscale Actuator Device (MAD) has been developed. The MAD is similar to piezoelectric driven inchworm motors with the exception that mechanically interlocking microridges replace the traditional frictional clamping mechanisms. The interlocked microridges, fabricated from single crystal silicon, increase the load carrying capability of the device substantially. Tests conducted on the current design demonstrate that the interlocked microridges support 16 MPa in shear or that a 3/spl times/5 mm locked chip supports a 25 kgf load. To operate the MAD device at high frequencies an open loop control signal is implemented. Synchronizing the locking and unlocking of the microridges with the elongating and contracting actuator requires minor perturbations in the voltage signal supplied. The system was successfully operated from 0.2 Hz to 500 Hz (or speeds from 2 /spl mu/m/s to 5 mm/s). The upper limit (500 Hz) is imposed by software limitations and not related to physical limitations of the current device.
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机译:已经开发出一种新颖的概念验证原型Mescre致动器装置(Mad)。疯狂类似于压电驱动的英寸虫电机,除了机械互锁的微粒替代传统的摩擦夹紧机构。由单晶硅制造的互锁的微粒,基本上增加了装置的负载承载能力。在电流设计上进行的测试表明,互锁的微粒在剪切中支撑16MPa,或者3 / SPL时间/ 5mm锁定芯片支撑25kgf负载。为了在高频下操作MAD设备,实现开环控制信号。使用伸长率和收缩致动器同步微孔的锁定和解锁需要在提供的电压信号中进行微小的扰动。该系统成功地从0.2Hz至500 Hz(或从2 / SPL MU / M / S至5mm / s的速度运行)。上限(500Hz)由软件限制施加,与当前装置的物理限制无关。
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