**6. Conclusions**

The principle of the anisotropic vibration tactile model of the ciliary body touch beam was explored. The equation of the equivalent friction coe fficients in full-coverage and local-coverage of the touch beam was established, and the e ffects of system parameters on the equivalent friction coe fficient were analyzed. An experiment on the sliding friction of the touch beam and the experiment of human factors were conducted.


**Author Contributions:** Conceptualization, J.X.; methodology, J.X.; software, D.L. and J.X.; verification, D.L. and J.X.; formal analysis, D.L.; data management, J.X. writing and manuscript preparation, D.L. and J.X.; project management, J.X.; H.L. improved the manuscript.

**Funding:** This work was supported in part by a gran<sup>t</sup> from the National Natural Science Foundation of China under gran<sup>t</sup> 51605423 and Youth Projects of the Department of Education of Hebei Province under gran<sup>t</sup> QN2018154.

**Conflicts of Interest:** The authors declare no conflict of interest.
