Mini-RIMS: a Miniature Roll-Stabilized Inertial Measurement System

摘要

High-performance spinning-flight vehicle have always presented a difficult set of requirements for inertial measurement systems (IMSs). These requirements typically include high levels of vibration and shock, as well as high levels of acceleration and angular rate. In addition, the increasing complexity and size of payloads in these vehicles leave less volume and weight available for the IMS. The Mini-RIMS inertial measurement system offers a solution to these problems. The Mini-RIMS is composed of two major assemblies: an inertial platform assembly and an electronic assembly. The platform assembly consists of a single-axis platform containing gyroscopes and accelerometers oriented so that angular velocity and linear acceleration are sensed about or along three orthogonal axes: roll, pitch, and yaw. The platform can either be pinned to the base so that it moves with the host vehicle or stabilized about its roll axis. In the first case, an inertial strapdown mode is implemented about all three axes. In the second case, the roll axis is decouple from roll motions of the vehicle while the pitch and yaw axes continue to be instrumented in strapdown fashion. (ERA citation 11:051681)