Table 2 TRL definition.
From: Upper limb soft robotic wearable devices: a systematic review
TRL | Definition | Explanation |
|---|---|---|
1 | Basic principle observed | The idea has been formulated |
2 | Technology concept formulated | The concept and the application have been formulated |
3 | Experimental proof of concept | The first prototype has been built but not tested |
4 | Technology validated in lab | The prototype has been tested in laboratory on a mannequin |
5 | Technology validated in relevant environment | The prototype is mature in terms of design and control and has been tested on healthy subjects |
6 | Technology demonstrated in relevant environment | The prototype has been tested for its efficacy on subjects with motor disability or healthy subjects according to the intended scenario |
7 | System prototype demonstration in operational environment | The system has been tested for its intended purpose in the clinic, at home, in the factory, in sport fields |
8 | System complete and qualified | The system is ready to be produced in large scale |
9 | Actual system proven in operational environment | The system is available in the market |