Abstract

Vibratory load transmission reduction for precision space A major challenge to the aerospace industry is to develop precision beam steering optics with clear aperture as large as 8 inches that operate at bandwidths of 1KHz, have throws of 3–10 mrad, and position accuracy of 100 nrad. The proposed technology promises to meet these requirements by introducing a new piezoelectronically driven colocated sensoriactuation system. The novel sensor promises to enable ultra-linear, 1nm resolution and 4 KHz small signal bandwidth in a small package. The sensor is integrated into the actuation mechanism in order to provide advantageous colocated functioning. The actuation mechanism is of unique high stiffness and shear strength capable of driving at high-bandwidth with no low coupling modes present. The proposed technology offers a lower cost, lighter weight, lower volume solution that can markedly increase performance capability. The approach is applied to the problem of controlling fast optics for precision optical compensation or hyperspectral imaging. The paper presents aspects of design experiment and system measurement.

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