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This paper presents an extreme environment capable Distributed Motor Controller (DMC) module suitable for operation with a distributed architecture of future spacecraft systems. This motor controller is designed to be a bus-based electronics module capable of operating a single Brushless DC motor in extreme space environments: temperature (−120°C to +85°C required, −180°C to +100°C stretch goal);...
The paper describes an optical Alignment Mirror Mechanism (AMM), and discusses its control scheme. The mirror's angular positioning accuracy requirement is ± 0.2 arc-sec. This requires the mirror's linear positioning actuators to have a positioning accuracy of ± 109 nm to enable the mirror to meet the angular tip/tilt accuracy requirement. Demonstrated capabilities are ± 35 nm linear positioning capability...
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