Development of human-in-loop (HIL) geometry and impedance control for the measurement in interfacial systems (IFS)
Date: 2022/02/25 - 2022/02/25
Academic Seminar: Development of human-in-loop (HIL) geometry and impedance control for the measurement in interfacial systems (IFS)
Speaker: Dr. Zeeshan Qaiser, UM-SJTU Joint Institute
Time: 9:00 a.m.-10:00 a.m., Feb 25th, 2022 (Beijing Time)
Location: Room 454, Longbin Building
Abstract
Interfacial systems (IFS) interact with the human body to achieve a wide range of targets including: injury prevention and treatment, rehabilitation, and performance improvement. There are many different IFS designed and developed for a range of applications including: aerospace, biomechanics, rehabilitation, and ergonomic devices. According to a recent market survey, 83million Chinese need these devices, and the market volume is around a 70Billion RMB. The design of the IFS consists of the following major steps: measurement and data collection, design or rectification, and manufacturing. This seminar focuses on the measurement of the IFS because of the most significant error contribution towards the final design, and custom foot orthoses (CFOs) are used as a case study. Typically, the measurements are conducted using a generalized measurement system (GMS), e.g., 3D scanner, Magnetic resonance imaging (MRI), etc. Contrary to this, a novel rapid evaluate adjust device (READ) measurement approach is proposed. The READ approach uses the concept of rapidly evaluating the subjective feedback and adjusting the geometry and impedance of the measurement device by using a human-in-loop (HIL) reconfigurable measurement system (RMS). The reconfigurable geometry function is achieved by developing a 3D ergonomic measurement system (3DEMS). Furthermore, a measurement system that provides INterface with Tunable Ergonomic properties using a Reconfigurable Framework with Adjustable Compliant Elements (INTERFACE system) is also developed to support the idea of changing geometry and impedance. The geometry and impedance of the interface can be adjusted via linear actuators and tunable stiffness mechanisms (TSM) based on objective interface pressure/load distribution and subjective feedback evaluations. The interface’s geometrical and impedance properties may be obtained by adjusting the parameters,i.e., geometry and impedance. The integration of rapid adjustable properties makes it possible to fine tune interface pressure/load. The HIL geometry and impedance control for the measurement in IFS can be applied to measure the desired properties that satisfy the interface pressure/load requirement and the subject’s comfort. Furthermore, the proposed methodology can improve the communication between physicians, patients, and fabricators on IFS prescription through the READ methodology.
Biography
Dr. Qaiser received the B.S. degree in aerospace engineering from the Institute of Space Technology, Islamabad, in 2012. Later, he received his M.S. and Ph.D. degrees in mechanical engineering from the University of Michigan- Shanghai Jiao Tong University Joint Institute, Shanghai, in 2016 and 2020. He is currently working as a postdoctoral researcher at the AIMS lab at UMJI. Dr. Qaiser published 14+ SCI publications in top-ranked academic journals and 15+ conference papers in reputed conferences. He received academic scholarships for his entire academic career and was acknowledged for excellent research and academic record home and abraod. His current research is the development of novel reconfigurable rehabilitation devices, measurement devices, compliant mechanisms, and reconfigurable molds for smart manufacturing. Dr. Qaiser worked on different projects including: the development of Tunable Stiffness Mechanisms (TSM) and bioinspired robotic foot, 2D/3D Finite Element modeling of foot and ankle to estimate accurate physiological parameters, development of foot and ankle orthoses with smart features, manufacturing with Fiber Reinforced Polymeric (FRP) composites, and design of automotive crash absorbers for better Specific Energy Absorption (SEA).