Long-term stability under material and environmental changes

Quantify the long-term stability of the pneumatic reservoir-computing topology ranking under fabric hysteresis, wear, and temperature variation.

Background

The evaluation uses a chronological 70/30 split within trials, which protects against within-trial leakage but does not test changes over extended operation. Although the topology ranking is consistent across the 36 reported trials, pneumatic soft-robot materials and sensors may drift as the fabric experiences hysteresis and wear or as environmental temperature changes.

The paper therefore leaves unresolved whether the observed superiority of the independently sealed topology over the coupled manifold remains stable during prolonged deployment. Long-term quantification is necessary before treating the reported design guidelines as robust operating principles.

References

Third, the chronological 70/30 split guards against within-trial leakage but not long-term drift; the topology ranking was consistent across all 36 trials, but stability under fabric hysteresis, wear, and temperature over long operational durations remains to be quantified.

— Towards Effective Physical Reservoir Computing with a Pneumatic Soft Robot  (2609.02157 - Manjunath et al., 2 Sep 2026) in Section 5, Discussion, paragraph beginning “Three limitations bound these guidelines.”