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Updated: Aug 23, 2025

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
Published on: August 2, 2016
Performance improvement of a low-frequency vibration generator by using iterative learning control
Yunsong Du1, Pengchao Dang1, Zhihua Liu2
1Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China.
Abstract:
This paper presents the performance improvement of a low-frequency vibration generator by using iterative learning control (ILC). A linear motor is designed as a low-frequency vibration generator to calibrate accelerometers. The traditional three-loop control model is first established. The Luenberger observer control method and the closed-loop ILC method are then proposed to improve the performance. Finally, the prototype of this low-frequency vibration system is set up. An accelerometer is calibrated to verify the accuracy of ILC. Subsequently, the total harmonic distortion, amplitude accuracy, and transverse motion of this linear motor vibration generator are tested. Compared with results obtained from the Luenberger observer control, the results derived by the ILC reveal better performance.
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