Jian-Lin Huang | EPFL Graph Search

Jian-Lin Huang is currently pursuing a PhD in robotics with the Reconfigurable Robotics Lab (RRL) at École Polytechnique Fédérale de Lausanne (EPFL).He received his Master of Science in Mechanical Engineering from National Taiwan University, focusing on the focusing on the synthesis of carbon nanotube and carbon nanocoils and developing their applications such as temperature sensors. After finishing the graduate school education, he worked as an associate engineer at Center for Measurement Standards (CMS) in Industrial Technology Research Institute. He was involved in tactile shear force sensing technology for robotic applications and metrology research project in the fields of force, vacuum, and nanomaterials. His current research focuses on the development of origami-based interactive platform which creates a bidirectional relationship between physical and virtual environments.

A 4D printed active compliant hinge for potential space applications using shape memory alloys and polymers

Jian-Lin Huang, Jamie Paik, Ralph Spolenak, Zhenishbek Zhakypov

This paper presents the proof-of-concept for a 4D printed active compliant hinge with a selectively variable stiffness for the deployment and reorientation of satellite appendages. We use 4D printing to create an active compliant hinge capable of bending to a given angular position, holding the position without consuming energy and reorienting itself multiple times in a slow and controlled manner without using rigid mechanisms and, therefore, requiring no lubrication. The deployment and the reorientation of the hinge are achieved by exploiting thermally induced stiffness modulation of one of the constituting materials and two antagonistic shape memory alloy actuators. The hinge is specifically designed for the case study of a 6U CubeSat with two orientable solar panels. In this work, we first explain the working principle of the hinge and propose three different actuation strategies to increase the energy collection of the considered CubeSat. Second, we describe the specific functional and geometric requirements of the hinge, the resulting design and the fabricated functional prototype. The latter is tested in a standard laboratory environment to measure the range of motion, the energy consumption and the actuation time. Finally, the feasibility of the three proposed actuation strategies is evaluated considering the corresponding net increase in collected energy. The results show that the hinge is compatible with the stowing requirements and capable of achieving maximum angular positions larger than 90 degrees in both directions and holding any intermediate position with an accuracy of less than 3 degrees. The three actuation strategies considered lead, in a standard laboratory environment, to an increase in energy generation between 54% and 72%.

IOP PUBLISHING LTD2021

Development and control of interactive reconfigurable robotic systems

Jian-Lin Huang

While reconfigurable robots provide a new promising approach for interactive systems, the complexity of distributed actuation/sensing systems, coupled kinematics and desired functionalities also bring new challenges and questions both in control design and hardware development: What design approaches enable direct human-robot interactions to address the morphological transformations and constraints of multi-DoF distributed activated robotic system? How to implement in-situ, multi-stage, programmable, and controllable actuation for the desired range of motion and functionalities? How to design multi-DoF robotic systems and needed for operation in distinct, real-world applications? These challenges and research questions formulate the objective and framework of my thesis. Namely, I explore for the solutions to provide methodologies for not only building the hardware for reconfigurable interactive systems but also investigating the control algorithm considering human-in-the-loop and evaluating the effectiveness of the integrated system with different application scenarios. In order to address the challenges associated with the development of reconfigurable robotic systems for human interactions, I first outline the concept of an interactive interface between humans and robots. I study the design methods for intuitively and dynamically controlling multi-DoF reconfigurable systems and algorithms for integrating mechanical characteristics of the core robotic components. Then, we investigate the design space and limitation of gesture-based multi-modalities interactions for further exploring the controllability, scalability, and versatility in functions for reconfigurable robotic systems. To realize the reconfigurable interactive robotic system, the design, capability, and limitation of the hardware system need to be established and evaluated. One of my research goals is to take the advantage of current non-conventional manufacturing technologies and materials as well as overcome their limitations. I study and develop compact actuators and unique transmission mechanisms inspired by origami patterns that can be integrated with multi-DoF robotic systems. I start with the design, model, and experimental validation of core functional components. Then, we investigate the fabrication process which has an additive manufactured structure with subtractive manufactured functional components integrated for compact, light-weight, and distributed activated mechanisms. Lastly, I propose the strategies for configuring and controlling the functional components to achieve functionalities like multi-DoF distributed actuation, self-assembly, and tunable stiffness. The achievable functionalities are further examined with several application scenarios. The main contributions of this thesis are: Development of interactive control interface for reconfigurable robotic systems Design and validation of distributed actuation solution and transmission mechanisms for compact multi-DoF robotic systems Study the synergy of additive manufacturing techniques and smart materials for achieving customizable functionalities and overcoming the limitation for conventional robotic systems

EPFL2021

Soft Touch using Soft Pneumatic Actuator-Skin as a Wearable Haptic Feedback Device

Jian-Lin Huang, Jamie Paik, Harshal Arun Sonar

Understanding the external environment depends heavily on vision, audition, and touch. Like vision and audition, the human sense of touch is complex. Tactile perception is composed of multiple fundamental and physical experiences felt as changes in stiffness, texture, shape, size, temperature, and weight by the skin. While researchers and industries have made continuous efforts to abstract and recreate these haptic experiences, haptic devices are still limited in invoking intricate and rich sensations. Herein, the design, model, and experimental validation of a wearable skin-like interface, able to recreate the roughness, shape, and size of a perceived object is presented; a platform for an interactive "physical" experience. The cogency of immersion through tactile feedback on moldable clay by the user response from the active haptic feedback, is examined. For the experimental test, a soft pneumatic actuator (SPA)-skin interface (90Hz bandwidth) with a complex actuation pattern is prototyped. The SPA-skin's performance using three sets of simulated textures (

WILEY2021

Development and control of interactive reconfigurable robotic systems

Jian-Lin Huang

EPFL2021