Publications de Xinchang Liu | EPFL Graph Search

Untethered Feel‐Through Haptics Using 18‐µm Thick Dielectric Elastomer Actuators

Yves Perriard, Herbert Shea, Yoan René Cyrille Civet, Vito Cacucciolo, Xiaobin Ji, Xinchang Liu

Head‐mounted displays for virtual reality (VR) and augmented reality (AR) allow users to see highly realistic virtual worlds. The wearable haptics that enable feeling and touching these virtual objects are typically bulky, tethered, and provide only low fi ...

2020

An optimized self-sensing piezoelectric cantilever for micro-robotic applications

Yves Perriard, Xinchang Liu, Louis Antoine Masson

Quasi-static piezoelectric actuators are used in micro-robotics due to the small displacements they can achieve, and they have been proven to be suitable for Self-Sensing Actuation (SSA) applications. The morphology and material of an actuator, and therefo ...

2019

An autonomous untethered fast soft robotic insect driven by low-voltage dielectric elastomer actuators

Yves Perriard, Herbert Shea, Yoan René Cyrille Civet, Matthias Imboden, Xinru Ji, Vito Cacucciolo, Xiaobin Ji, Xinchang Liu

Insects are a constant source of inspiration for roboticists. Their compliant bodies allow them to squeeze through small openings and be highly resilient to impacts. However, making subgram autonomous soft robots untethered and capable of responding intell ...

2019

Sensorless Position Detection Framework for a Multi-state Switched Reluctance Actuator of a Textile Machine

Yves Perriard, Yoan René Cyrille Civet, Paolo Germano, Xinchang Liu

Sensorless needle position detection for the actuator of a textile machine is challenging because of its multi current levels used and the transient state when the current changes. A local regression method can be used to represent the variation of inducta ...

IEEE2018

Acoustic emission source detection and wave generation on a working plate using piezoelectric actuators

Xinchang Liu

In modern automated assembly lines, part feeders play an important role to separate and sort parts. Agility and flexibility are required to achieve a good yield for different types of parts. The common working principle is to vibrate a working plate driven ...

EPFL2017

Equivalent Piezoelectric Actuator Circuits and Comparison

Yves Perriard, Yoan René Cyrille Civet, Xinchang Liu

Equivalent piezoelectric actuator circuit is necessary for certain applications. Previous models have limits and are not accurate on modelling the real part of piezo impedance at low frequency range. A simple inverse proportional to frequency model is prop ...

Ieee2014