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Dreaming on Mars: How Curiosity Performs Actuator Warm-Up While SleepingBefore the Curiosity rover can perform its science activities for the day, such as driving, moving its robotic arm, or drilling, it first has to ensure that its actuators are within their allowable flight temperatures (AFTs). When the rover is awake, flight software uses heaters to warm up and maintain thermal zones at operational temperatures. However, Curiosity spends about 70% of its time sleeping, with the flight computer off, in order to conserve energy. Dream Mode is a special behavior that allows the rover to execute warm-up activities while sleeping. Using Dream Mode, actuators can be warmed up to their AFTs before the flight computer wakes up and uses them - saving power and improving operational efficiency. This paper describes the motivation behind Dream Mode, how it was implemented and tested on Curiosity, and the challenges and lessons learned along the way.
Document ID
20150007807
Document Type
Conference Paper
External Source(s)
Authors
Lee, Gene Y. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Donaldson, James A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 8, 2015
Publication Date
June 2, 2013
Subject Category
Lunar and Planetary Science and Exploration
Computer Programming and Software
Meeting Information
International Conference on System of Systems Engineering (SoSE)(Maui, HI)
Distribution Limits
Public
Copyright
Other
Keywords
fault protection
Dream Mode
thermal
sleep
Curiosity Rover

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IDRelationTitle20150007806See AlsoDreaming on Mars: How Curiosity Performs Actuator Warm-up While Sleeping