Erratum for “Performance Evaluation of Conductive Fiber-Coated Twisted and Coiled Polymer Actuator (TCPA) Unit with a Helical Fiber Structure” (Vol.38, pp. 329-340, 2026)

Original article: Journal of Robotics and Mechatronics, Vol.38, No.1, pp. 329-340, 2024. doi: https://doi.org/10.20965/jrm.2026.p0329

Upon further review of this article, the authors noticed errors on page 333 that they would like to correct. This error occurred unintentionally during the unit conversion and manuscript preparation process. The correction does not change any of the conclusions.

Originally published text

Corrected text

Section 4.1: In the current system, the rotational speeds of SM1 and SM2, which perform the twist operation on the precursor fiber, were maintained at 90 rpm, whereas the feed speed provided by SM3 was manually adjusted for tension control, as previously described.

Section 4.1: In the current system, the rotational speeds of SM1 and SM2, which perform the twist operation on the precursor fiber, were maintained at 27 rpm, whereas the feed speed provided by SM3 was manually adjusted for tension control, as previously described.

Section 4.3: In addition, while the previous report set the rotational speeds of SM1 and SM2 at 30 rpm, this study used 90 rpm to accommodate the production of longer TCPAs, which might have adversely affected the twisting process stability.

Section 4.3: In addition, while the previous report set the rotational speeds of SM1 and SM2 at 9 rpm, this study used 27 rpm to accommodate the production of longer TCPAs, which might have adversely affected the twisting process stability.

The authors regret this error, and this error has now been corrected in the PDF version of the article.