ISS Science for Everyone
SCIENCE OBJECTIVES FOR EVERYONE
Test facility for lab-aUtomation System in Kibo (TUSK) is a manipulator system designed to reduce crew workload. Since positioning accuracy is an important requirement, it is necessary to verify that it performs reliably under microgravity conditions. This investigation measures the distribution of positioning errors, compares the results with those obtained in a 1G environment, and provides insights that help establish design methods for manipulators in space.
Facility Description
Facility Overview
Test facility for lab-aUtomation System in Kibo (TUSK) is aimed at advancing experimental automation with precision machinery. To achieve this, it is essential to verify how instruments such as robotic arms perform in a microgravity (μG) environment. In experiments requiring precise manipulation, sub-millimeter order operational errors may have significant impacts.
By conducting double ball bar measurements, which can evaluate positioning and trajectory errors with an accuracy of up to 0.1 μm in a limited operational space, and comparing the results with those obtained under 1G conditions, researchers analyze the mechanisms by which gravity influences error generation in machinery.
Operations
Facility Operations
- Test facility for lab-aUtomation System in Kibo (TUSK) evaluates the positioning accuracy, repeatability, and trajectory accuracy of manipulators using a ball-bar displacement sensor.
- Firstly, the equipment is set-up in the Multi Purpose Small Payload Rack (MSPR) then the manipulator is controlled by commands from the ground to conduct accuracy measurements.
- Three measurements are conducted and the equipment is removed from the MSPR after the experiment is completed.
Publications
PRINCIPAL INVESTIGATOR(S)
JAXA