Within the context of miniaturization of mechatronic systems, the development of a powerful micro-rotative actuator is an important topic of research. Such new actuation systems need to be validated on a specific test bed. Due to the dimensions and the very small torque to be measured, special low friction bearings are necessary and very precise alignment procedure needs to be developed.
Smal, O., Dereine, E., Raucent, B., & Dehez, B. (2003). Design of a micro-rotative actuator test bed. Proceedings of the 2003 IEEE International Symposium on Assembly andTask Planning (ISATP2003) (Cat. No03TH8673), p. 13-17. https://doi.org/10.1109/ISATP.2003.1217178