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Liang-Wey Chang is a pioneering figure in the field of flexible robotics, whose foundational work on the dynamics and kinematics of flexible-link manipulators has shaped modern robotic design. His key research areas include flexible manipulator dynamics, structural flexibility modeling, and the separation of rigid-body and elastic motions in robotic systems. Chang’s most significant contribution is the development of the Equivalent Rigid Link System (ERLS) model, which elegantly decouples the large-scale rigid-body motion from the structural vibrations of flexible links. This conceptual breakthrough, detailed in his 1991 papers on kinematics and dynamics, enables more accurate and computationally efficient analysis of flexible robots—a critical advancement for high-speed, high-precision applications. His work, validated experimentally on a single-link flexible manipulator in 1989, has garnered over 75 citations collectively, underscoring its lasting influence. By addressing the often-ignored effects of link flexibility, Chang laid the groundwork for lighter, faster, and more accurate robotic systems, making his research essential reading for anyone studying advanced robot dynamics or control.