Attitude sensor and actuator interfacing for micro-satellites

[摘要] ENGLISH ABSTRACT:The purpose of this thesis was to design and test the interfaces of sensors and actuators. In thecomplete Attitude Determination and Control System CADCS) the Interface Control Processor(ICP) must be interfaced to various sensors and torquers.The testing of interfaces involves the simulation of sensors and actuators and also two of theAttitude Control Processor's functions, i.e. sending actuator commands and receiving sensordata. The tested interfaces are for two actuators and three sensors. Both analog and digitalsensors and actuators are interfaced i.e. reaction wheels, magnetorquers, magnetometer andhorizon /fine sun sensor. The simulated sensors and actuators are to be employed on three axiscontrolled, low earth o~biting micro-satellites.To test the interfaces, a test circuit was developed and the design is presented. Finally thesoftware to facilitate the testing was developed and is also presented with the analysis based onprotocol implementation and data rates.

[发布机构] Stellenbosch University