S&M Young Researcher Paper Award 2020
Recipients: Ding Jiao, Zao Ni, Jiachou Wang, and Xinxin Li [Winner's comments]
Paper: High Fill Factor Array of Piezoelectric Micromachined
Ultrasonic Transducers with Large Quality Factor

S&M Young Researcher Paper Award 2021
Award Criteria
Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

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S&M2689 Research Paper of Special Issue

Adaptive Variable-speed Control for Enhancing the Performance of a Mine Counter-rotating Fan System

Zijian Ai, Guoliang Qin, Kun-Chieh Wang, and Hao Gao

(Received March 23, 2021; Accepted July 16, 2021)

Keywords: mine counter-rotating fan, adaptive speed control, performance enhancement of ventilation

The mine counter-rotating fan (MCRF) is important equipment in tunnel construction and is also widely used for ventilation in mining. The need to improve the performance of MCRF systems has been attracting the interest of researchers. An MCRF is composed of two vane rotors that rotate in opposite directions. We propose a novel adaptive variable-speed (AVS) control method to improve the performance of an MCRF system. The proposed method is based on the concept of adaptively controlling the speed of the second vane rotor according to changes in the working conditions of the whole fan system. To evaluate the performance of our proposed AVS control method, experiments were performed using various sensors to detect pressure and mass flow rates when using our newly designed MCRF system. Results show that, with the proposed AVS control method, the problem of the rotor output torque rising and falling dramatically during large and small mass flows, respectively, is overcome. Furthermore, the problems of overload and a low blocking margin are solved. As a result, the overall pressure rise and performance of the whole fan system are improved.

Corresponding author: Kun-Chieh Wang




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