Best Paper on Vibrations Award, ASME Dynamic Systems and Control Division

We are thrilled to have received the ASME Dynamic Systems and Control Division Best Paper on Vibrations Award at the ASME Dynamic Systems and Control Conference on October 13, 2017. This recognition was awarded to Tianyu Jiang, Hui Xiao, and Xu Chen for our work titled, “An inverse-free disturbance observer for adaptive narrow-band disturbance rejection with application to selective laser sintering.”

Our paper focuses on addressing critical challenges in Selective Laser Sintering (SLS), a rapidly advancing additive manufacturing process. As SLS continues to gain traction due to its versatility in processing a broad range of materials, the demand for improved part quality and system repeatability has driven research into innovative control methods.

In our work, we introduced a novel Youla-Kucera parameterization-based forward-model selective disturbance observer (FMSDOB), tailored for flexible servo control in SLS systems. The method enhances the capabilities of conventional disturbance observers while overcoming practical limitations, such as plant inversion. Additionally, we proposed advanced filter designs to mitigate the waterbed effect and developed a parameter adaptation algorithm for online identification of disturbance frequencies. Our approach was validated through both simulations and experiments on a galvo scanner within an SLS system.

Special thanks to the ASME Dynamic Systems and Control Division for this honor, and congratulations to all contributors to the conference for advancing the frontiers of dynamic systems and control.