Linear Resonator Actuator-Constructed Wearable Haptic System with the Application of Converting Remote Grinding Force to Vibratory Sensation

This study developed a three-axis vibrational haptic wearable device (RCWS) utilizing Linear Resonant Actuators (LRAs) to simulate grinding vibrations. The implementation of RCWS is described in detail. By recording the normal force during manual grinding with a load cell and converting it into a se...

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Bibliographic Details
Published inActuators Vol. 12; no. 9; p. 359
Main Authors Liu, Shang-Hsien, Kao, Yung-Chou, Feng, Guo-Hua
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2023
Subjects
Accelerometers
Actuators
Commands
Conversion
Grinding
grinding force
Grinding tools
haptic
Haptics
linear resonator actuator
Linearity
Machining
Microelectromechanical systems
pulse width modulation
Senses
Skin
vibratory sensation
wearable
Wearable computers
Wearable technology
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Summary:This study developed a three-axis vibrational haptic wearable device (RCWS) utilizing Linear Resonant Actuators (LRAs) to simulate grinding vibrations. The implementation of RCWS is described in detail. By recording the normal force during manual grinding with a load cell and converting it into a series of PWM commands, the LRA on the RCWS was controlled in open-loop mode using these PWM commands. Three methods were tested for force-to-PWM conversion, two of which showed a linear correlation (>0.7) with raw data. In the correlation between PWM commands and generated acceleration, all three methods exhibited a high linearity of at least 0.85. This wearable RCWS offers a promising approach for users to experience the machining force from the versatile and critical remote machining process with a finger vibratory sensation.
ISSN:2076-0825
2076-0825
DOI:10.3390/act12090359