Xu Chen

Latest

• Focused Section on Machine Learning, Estimation and Control for Intelligent Robotics
• A New Kinetic Modelling of Polyamide 12 Degradation in Selective Laser Sintering
• An In-situ Imaging and Data Analytics for Selective Laser Sintering in Presence of System Degradation
• Local Loop Shaping for Rejecting Band-Limited Disturbances in Nonminimum-phase Systems with Application to Laser Beam Steering for Additive Manufacturing
• Closed-loop High-fidelity Simulation Integrating Finite Element Modeling with Feedback Controls in Additive Manufacturing
• New Hammerstein Modeling and Analysis for Controlling Melt Pool Width in Powder Bed Fusion Additive Manufacturing
• Robotic Target Following with Slow and Delayed Visual Feedback
• A Control of Surface Quality in Selective Laser Sintering Additive Manufacturing With Reclaimed Polyamide Materials
• A Collaborative Sensing and Model-based Realtime Recovery of Fast Temporal Flows from Sparse Measurements
• Active Interlayer Heating for Sustainable Selective Laser Sintering With Reclaimed Polyamide 12 Powders
• Closed-loop Simulation Integrating Finite Element Modeling with Feedback Controls in Powder Bed Fusion Additive Manufacturing
• A Factory-Centric Workforce Development Approach for Aerospace Industry
• H-infinity-based Selective Inversion of Nonminimum-phase Systems for Feedback Controls
• A Process Control and Interlayer Heating Approach to Reuse Polyamide 12 Powders and Create Parts With Improved Mechanical Properties in Selective Laser Sintering
• A Review of Aging, Degradation, and Reusability of Polyamide 12 Powders In Selective Laser Sintering Additive Manufacturing
• Control-Oriented Modeling and Repetitive Control of In-Layer and Cross-Layer Thermal Interactions in Selective Laser Sintering
• Development of a Selective Laser Sintering Testbed for Quality-assured Powder Bed Fusion Additive Manufacturing
• Evaluating Poly (Ether Ether Ketone) Powder Recyclability for Selective Laser Sintering Applications
• Multivariable Robust Blade Pitch Control Design to Reject Periodic Loads on Wind Turbines
• New Hammerstein Modeling and Analysis for Controlling Melt Pool Width in Powder Bed Fusion Additive Manufacturing
• Process Control of Surface Quality and Part Microstructure in Selective Laser Sintering Involving Highly Degraded Polyamide 12 Materials
• Quantitative Influences of Successive Reuse on Thermal Decomposition, Molecular Evolution and Elemental Composition of Polyamide 12 Residues in Selective Laser Sintering
• Robotic Target Following with Slow and Delayed Visual Feedback
• Target Tracking Under Delayed and Irregular-Sampled Sensing for a Robotic Air-Hockey System
• Closed-loop High-fidelity Simulation Integrating Finite Element Modeling with Feedback Controls in Additive Manufacturing
• A Dynamic Target Tracking Under Slow and Delayed Vision Feedback
• Control-Oriented Modeling and Repetitive Control of In-Layer and Cross-Layer Thermal Interactions in Selective Laser Sintering
• Following Fast-Dynamic Targets With Only Slow and Delayed Visual Feedback - a Kalman Filter and Model-Based Prediction Approach
• Selective Area Forging (SAF) for Additive Manufacturing
• A Multirate Fractional-Order Repetitive Control for Laser-Aided Additive Manufacturing
• Model-based Sparse Information Recovery by Collaborative Sensor Management
• Transmission of Signal Nonsmoothness and Transient Improvement in Add-On Servo Control
• Wide-band Loop Shaping for Modulation of Energy Transmission in Nonminimum-phase Systems
• A Spectral Analysis and Its Implications of Feedback Regulation beyond Nyquist Frequency
• Synthesis and Analysis of Multirate Repetitive Control for Fractional-order Periodic Disturbance Rejection in Powder Bed Fusion
• A Multirate Repetitive Control for Fractional-Order Servos in Laser-Based Additive Manufacturing
• A Spectral Analysis and Its Implications of Feedback Regulation beyond Nyquist Frequency
• Periodic Wind Disturbance Rejection using Robust Individual Pitch Control
• Transmission of Signal Nonsmoothness and Transient Improvement in Add-On Servo Control
• A Multirate Fractional-Order Repetitive Control for Laser-Aided Additive Manufacturing
• Discrete-Time Nonlinear Damping Backstepping Control With Observers for Rejection of Low and High Frequency Disturbances
• Realtime Control-Oriented Modeling and Disturbance Parameterization for Smart and Reliable Powder Bed Fusion Additive Manufacturing
• Rejecting Fast Narrow-Band Disturbances With Slow Sensor Feedback for Quality Beam Steering in Selective Laser Sintering
• Control of Dual-stage HDDs with Enhanced Repetitive Disturbance Rejection
• Adaptive Loop Shaping for Wideband Disturbances Attenuation in Precision Information Storage Systems
• Disturbance Observer Based Pitch Control of Wind Turbines for Enhanced Speed Regulation
• A Robust Optimal Design for Strictly Positive Realness in Recursive Parameter Adaptation
• A Tutorial on Loop-shaping Control Methodologies for Precision Positioning Systems
• An Inverse-Free Disturbance Observer for Adaptive Narrow-Band Disturbance Rejection With Application to Selective Laser Sintering
• Data Storage Devices and Methods with Frequency-Shaped Sliding Mode Control
• Multi-band beyond-Nyquist Disturbance Rejection on a Galvanometer Scanner System
• Disturbance Observer Based Control Design for Wind Turbine Speed Regulation
• Multirate Forward-model Disturbance Observer for Feedback Regulation beyond Nyquist Frequency
• Spectral Distribution and Implications of Feedback Regulation beyond Nyquist Frequency
• Enhanced Wide-Spectrum Vibration Suppression Based on Adaptive Loop Shaping
• Extended State Observer with Phase Compensation to Deal with High-frequency Vibrations in Hard Disk Drives
• Input-to-output Discontinuity and Transient Improvement in Add-on Control Design
• Multirate Forward-model Disturbance Observer for Feedback Regulation beyond Nyquist Frequency
• Interlaced Direct Adaptive Regulation Scheme Applied to a Benchmark Problem
• Disturbance Observer Based Pitch Control of Wind Turbines for Disturbance Rejection
• Discrete-time Reduced-Complexity Youla Parameterization for Dual-input Single-output Systems
• Modified Direct Adaptive Regulation Scheme Applied to a Benchmark Problem
• An Open-source Selective Laser Sintering Additive Manufacturing System
• Discrete-time Output Feedback Nonlinear Control for Combined Low- and High-frequency Disturbance Compensation
• Real-time Kinematic Modeling and Prediction of Human Joint Motion in a Networked Rehabilitation System
• Data Storage Device Comprising Slew Rate Anti-Windup Compensation for Microactuator
• Overview and New Results in Disturbance Observer based Adaptive Vibration Rejection with Application to Advanced Manufacturing
• Pseudo Youla-Kucera Parameterization with Control of the Waterbed Effect for Local Loop Shaping
• Pseudo Youla–Kucera parameterization with control of the waterbed effect for local loop shaping
• Disk Drive Filtering Disturbance Signal and Error Signal for Adaptive Feed-Forward Compensation
• Adaptive Sliding Mode Spacecraft Attitude Control
• Adaptive Suppression of High-Frequency Wide-Spectrum Vibrations With Application to Disk Drive Systems
• Discrete-Time Frequency-Shaped Sliding Mode Control for Audio-Vibration Rejection in Hard Disk Drives
• Transient Enhancement in Add-On Feedforward Algorithms for High-Performance Mechatronic Systems
• Selective Iterative Learning Control to Deal With Iteration-Dependent Disturbances
• A Nonlinear Feedback Control Scheme for Transient Performance Enhancement in Hard Disk Drives
• New Repetitive Control with Improved Steady-State Performance and Accelerated Transient
• Methods for Closed-loop Compensation of Ultra-high Frequency Disturbances in Hard Disk Drives and Hard Disk Drives Utilizing Same
• Methods for Closed-loop Compensation of Ultra-high Frequency Disturbances in Hard Disk Drives and Hard Disk Drives Utilizing Same
• Optimal Decoupled Disturbance Observers for Dual-Input Single-Output Systems
• Control Design for Cancellation of Unnatural Reaction Torque and Vibrations in Variable-Gear-Ratio Steering System
• Reduced-Complexity and Robust Youla Parameterization for Discrete-Time Dual-Input-Single-Output Systems
• Selective Model Inversion and Adaptive Disturbance Observer for Rejection of Time-varying Vibrations on an Active Suspension
• Control Methodologies for Precision Positioning Systems
• Neural-Network Based Automatic PID Gain Tuning in the Presence of Time-Varying Disturbances in Hard Disk Drives
• Add-on Loop Shaping via Youla Parameterization for Precision Motion Control
• Inverse-Based Local Loop Shaping and IIR-filter Design For Precision Motion Control
• Selective Model Inversion and Adaptive Disturbance Observer for Time-Varying Vibration Rejection on an Active-Suspension Benchmark
• A Convex Optimization Approach for Solving the Robust Strictly Positive Real (SPR) Problem
• Decoupled Disturbance Observers for Dual-Input-Single-Output Systems With Application to Vibration Rejection in Dual-Stage Hard Disk Drives
• An Enhanced Repetitive Control Algorithm using the Structure of Disturbance Observer
• Reduced-complexity Adaptive Youla Parameterization for Broadband-Vibration Rejection in Dual-stage Hard Disk Drives
• A Minimum Parameter Adaptive Approach for Rejecting Multiple Narrow-Band Disturbances with Application to Hard Disk Drives
• Spiral Servo Writing in Hard Disk Drives Using Iterative Learning Based Tracking Control
• A Structure for All Stabilizing Controllers and Its Applications to Narrow-Band Disturbance Rejection in Hard Disk Drives
• An Indirect Adaptive Approach to Reject Multiple Narrow-Band Disturbances in Hard Disk Drives
• Unknown Multiple Narrow-band Disturbance Rejection in Hard Disk Drives--an Adaptive Notch Filter and Perfect Disturbance Observer Approach
• Optimal Plant Shaping for High Bandwidth Disturbance Rejection in Discrete Disturbance Observers