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Jun Ma

Researcher at National University of Singapore

Publications -  65
Citations -  581

Jun Ma is an academic researcher from National University of Singapore. The author has contributed to research in topics: Control theory & Optimization problem. The author has an hindex of 10, co-authored 58 publications receiving 343 citations. Previous affiliations of Jun Ma include Harvard University & University College London.

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Integrated Mechatronic Design in the Flexure-Linked Dual-Drive Gantry by Constrained Linear–Quadratic Optimization

TL;DR: A dual-drive H-gantry design is converted to a constrained projection gradient-based optimization problem, which can be efficiently solved by direct computation of projection gradient and line search of optimal step length by formulating a constrained linear–quadratic optimization problem.
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Optimal Decentralized Control for Uncertain Systems by Symmetric Gauss–Seidel Semi-Proximal ALM

TL;DR: In this article, the authors investigated the optimal decentralized control problem in the presence of parameter uncertainties and showed that a set of stabilizing decentralized controller gains for the uncertain system is parameterized in a convex set through appropriate convex restriction and then an approximated conic optimization problem is constructed.
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Parameter space optimization towards integrated mechatronic design for uncertain systems with generalized feedback constraints

TL;DR: This work treats the integrated mechatronic design problem as a controller optimization problem with structural constraints as well as a class of optimal control problems, such as controller synthesis problem with prescribed sparsity pattern, decentralized control problem with/without structural constraints, etc.
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Data-Driven Multiobjective Controller Optimization for a Magnetically Levitated Nanopositioning System

TL;DR: A novel data-driven multiObjective optimization approach is proposed that is able to automatically estimate the gradient and Hessian purely based on the measured motion data; the multiobjective cost function is suitably designed to take into account both smooth and accurate trajectory tracking.
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Trajectory Generation by Chance-Constrained Nonlinear MPC With Probabilistic Prediction

TL;DR: In this article, a variational Bayesian Gaussian mixture model (vBGMM) framework is employed to predict the future trajectory of moving obstacles, and then a trajectory generation framework is proposed which will efficiently and effectively address trajectory generation in the presence of the uncertainty within a prediction horizon.