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Microsystems in Spacecraft Guidance, Navigation, and Control 209

DPA housing

DC-DC converter

Processor PWA
CGA housing
DPA PSE PWA Lens and camera support assembly
Alignment reference cube
Lens assembly
Baffle
DC-DC
converter
Controller and PSE PWA
Gyro PWA

Camera PWA

FIGURE 10.1 The NMP ST6 ISC. (Source: NASA JPL/CALTECH.)

circuit (ASIC) electronics designs. Inertial systems fabricated from similar
MEMS gyro components have been used in PGM, autonomous vehicles, and
other space-related mission applications. The silicon MEMS gyros sense angular
rate by detecting the Coriolis effect on a sense mass. A sense mass is driven into
oscillation by electrostatic motors. The mass oscillates in one axis and as the body is

FIGURE 10.2 NMP ST6 ISC MEMS three-axis gyro assembly. (Source: Charles Stark
Draper Laboratory.)

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