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    • American Control Conference 2024
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    • 2023 IEEE/ASME International Conference on Advanced Intelligent Mechatronics
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    • UW Advanced Composites Center
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    • Beyond-Bandwidth Control in High-Speed Precision Mechatronics
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    • Robotic Inspection of Complex Metalic Parts
    • Sensing and Control under Constrained Information Feedback
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    • Adaptation over Unsteady Dynamics
  • Recognitions
    • Best Paper on Robotics Award, ASME Dynamic Systems and Control Division
    • Best Student Paper on Vibrations Award, ASME Dynamic Systems and Control Division
    • ARM Champion Award
    • Best Paper, ISCIE/ASME International Symposium on Flexible Automation
    • Boeing Visiting Professorship
    • National Academy of Engineering (NAE) 2023 Frontiers of Engineering Alumnus
    • Mechatronic Systems Outstanding Young Researcher Award
    • UW+Amazon Science Hub Faculty Research Award
    • SME Sandra L. Bouckley Outstanding Young Manufacturing Engineer Award
    • Best Student Paper on Robotics, ASME Dynamic Systems and Control Division
    • Best Paper, ISCIE/ASME International Symposium on Flexible Automation
    • NSF CAREER Award
    • Best Paper on Vibrations Award, ASME Dynamic Systems and Control Division
    • Young Investigator Award, ISCIE/ASME International Symposium on Flexible Automation
  • Publications
    • Learning to Detect Slip through Tactile Estimation of the Contact Force Field and its Entropy Properties
    • Agile Surface Inspection Framework for Aerospace Components Using Unsupervised Machine Learning
    • Effect of Intra-Build Design Parameters on the Fracture Toughness Properties of EBM Ti6Al4V
    • A Robotic Surface Inspection Framework and Machine-Learning Based Optimal Segmentation For Aerospace and Precision Manufacturing
    • AIM 2024: Proceedings of 2024 IEEE/ASME International Conference on Advanced Intelligent Mechatronics
    • ISFA 2024: Proceedings of 2024 ISCIE/ASME International Symposium on Flexible Automation
    • Learned Slip-Detection-Severity Framework using Tactile Deformation Field Feedback for Robotic Manipulation
    • Learning to Detect Slip through Tactile Measures of the Contact Force Field and its Entropy
    • Optimal Loop Shaping and Disturbance Rejection Beyond the Nyquist Frequency using a Forward Model Disturbance Observer and Convex Optimization Based Filter Design
    • Review: Adaptive and Robust Active Vibration Control
    • State-Space System Identification beyond the Nyquist Frequency with Collaborative Non-Uniform Sensing Data
    • A Recursive System Identification with Non-uniform Data under Coprime Collaborative Sensing
    • A Recursive System Identification With Non-Uniform Temporal Feedback Under Coprime Collaborative Sensing
    • Collaborative Robotics, Controls, and Machine Learning for Automated Visual Inspection of Complex Parts and Surfaces
    • Control-oriented Modeling and Multirate Feedback Control in Laser Powder Bed Fusion Additive Manufacturing
    • Learning to Detect Slip through Tactile Measures of the Contact Force Field and its Entropy
    • Multi-Track Melt Pool Width Modeling in Powder Bed Fusion Additive Manufacturing
    • Understanding and Controlling the Sensitivity of Event Cameras in Responding to Static Objects
    • Least Squares Solution for System Identification with Non-uniform Data under a Coprime Collaborative Sensing Scheme
    • A Review of Aging, Degradation, and Reusability of PA12 Powders in Selective Laser Sintering Additive Manufacturing
    • Preheating Temperature Control and Low-Contrast Imaging Data Analytics for Laser Powder Bed Fusion
    • Microstructure and Microhardness of Electron Beam Melted Ti-6Al-4V Components with Differential Thickness in Initial Deposition Layers
    • Adaptive Lighting for Curved and Nonuniform Objects in Optomechanical Inspection Systems
    • Control-oriented Modeling and Learning of Fast 3-Dimensional Laser-material Interaction from 2-Dimensional Images
    • A Robotic Chess Player and the Impacts of Mechanical and Environmental Setting in Data Collection
    • A Mass-transfer Based Approach to Model and Predict VOC Emission From Selective Laser Sintering With Multiple Printing Parameters
    • Learning Of Fast 3-dimensional Laser-material Interaction From 2-dimensional Images
    • Target Tracking Under Delayed and Irregularly-Sampled Visual Feedback for a Robotic Air-Hockey System
    • A Machine Learning-based Portable Inspection Method For Evaluation Of Tool Surface Condition And Release Coating In Composites Manufacturing
    • Closed-loop Feedback For Additive Manufacturing Simulation
    • Adaptive Illuminance Control
    • Method for Segmenting Images
    • A New Kinetic Modelling of Polyamide 12 Degradation in Selective Laser Sintering
    • An Image Segmentation Framework for In-Situ Monitoring in Laser Powder Bed Fusion Additive Manufacturing
    • Control-oriented In-situ Imaging and Data Analytics for Coaxial Monitoring of Powder Bed Fusion Additive Manufacturing
    • Shape-Adaptive Lighting for Complex Geometries in Automated Visual Inspection
    • Target Tracking Under Delayed and Irregularly-Sampled Visual Feedback for a Robotic Air-Hockey System
    • A Control of Surface Quality in Selective Laser Sintering Additive Manufacturing With Reclaimed Polyamide Materials
    • A Combined Theoretical and Experimental Approach to Model Polyamide 12 Degradation in Selective Laser Sintering Additive Manufacturing
    • Control-oriented Mechatronic Design and Data Analytics for Quality-assured Powder Bed Fusion Additive Manufacturing
    • Provision of Controlled and Consistent Light Distribution Over an Uneven Topography to Maximize Efficacy of Machine-Vision based Defect Identification
    • Adaptive Illuminance Control of Uniform and Uneven Topographies
    • System and Method for Defect Detection in Laser Powder Bed Fusion Additive Manufacturing
    • New Hammerstein Modeling and Analysis for Controlling Melt Pool Width in Powder Bed Fusion Additive Manufacturing
    • Control-Oriented Modeling and Repetitive Control of In-Layer and Cross-Layer Thermal Interactions in Selective Laser Sintering
    • Evaluating Poly (Ether Ether Ketone) Powder Recyclability for Selective Laser Sintering Applications
    • Modeling and Closed-Loop Control of Lights for Consistent and Robotic Inspection of Complex Metallic Parts
    • 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
    • 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
    • Closed-loop Feedback For Additive Manufacturing Simulation
    • 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
    • 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
    • Introduction to the Focused Section on Machine Learning, Estimation and Control for Intelligent Robotics
    • Multivariable Robust Blade Pitch Control Design to Reject Periodic Loads on Wind Turbines
    • Robotic Target Following with Slow and Delayed Visual Feedback
    • 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
    • Model-based Sparse Information Recovery by Collaborative Sensor Management
    • Wide-band Loop Shaping for Modulation of Energy Transmission in Nonminimum-phase Systems
    • 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
    • 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
    • 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
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      • Introduction
    • _index
    • _index
  • Sample_publications
    • Learned Slip-Detection-Severity Framework using Tactile Deformation Field Feedback for Robotic Manipulation
    • Learning to Detect Slip through Tactile Measures of the Contact Force Field and its Entropy
    • A Recursive System Identification With Non-Uniform Temporal Feedback Under Coprime Collaborative Sensing
    • A Review of Aging, Degradation, and Reusability of PA12 Powders in Selective Laser Sintering Additive Manufacturing
    • Adaptive Lighting for Curved and Nonuniform Objects in Optomechanical Inspection Systems
    • Transmission of Signal Nonsmoothness and Transient Improvement in Add-On Servo Control
    • Multirate Forward-model Disturbance Observer for Feedback Regulation beyond Nyquist Frequency
    • 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
    • New Repetitive Control with Improved Steady-State Performance and Accelerated Transient
    • Optimal Decoupled Disturbance Observers for Dual-Input Single-Output Systems
    • Selective Model Inversion and Adaptive Disturbance Observer for Time-Varying Vibration Rejection on an Active-Suspension Benchmark
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System and Method for Defect Detection in Laser Powder Bed Fusion Additive Manufacturing

Apr 1, 2021·
Tianyu Jiang
Xu Chen
Xu Chen
,
Mengying Leng
· 0 min read
Cite
Type
Manuscript
Last updated on Apr 1, 2021
Uw Reference: 49231.01us1
Xu Chen
Authors
Xu Chen
← Adaptive Illuminance Control of Uniform and Uneven Topographies Apr 1, 2021
New Hammerstein Modeling and Analysis for Controlling Melt Pool Width in Powder Bed Fusion Additive Manufacturing Mar 1, 2021 →

© 2024 Xu Chen. This work is licensed under CC BY NC ND 4.0

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