News & Events

14 were found.




  •  NEWS   MERL makes a strong showing at the American Control Conference
    Date: July 6, 2016 - July 8, 2016
    Where: American Control Conference (ACC)
    MERL Contacts: Mouhacine Benosman; Scott Bortoff; Petros Boufounos; Daniel Burns; Claus Danielson; Stefano Di Cairano; Amir-massoud Farahmand; Abraham Goldsmith; Piyush Grover; Uros Kalabic; Andrew Knyazev; Christopher Laughman; Daniel Nikovski; Arvind Raghunathan; Yebin Wang; Avishai Weiss
    Research Areas: Multimedia, Data Analytics, Mechatronics, Business Innovation, Advanced Control Systems, Dynamical Systems, Machine Learning, Predictive Modeling
    Brief
    • The premier American Control Conference (ACC) takes place in Boston July 6-8. This year MERL researchers will present a record 20 papers(!) at ACC, with several contributions, especially in autonomous vehicle path planning and in Model Predictive Control (MPC) theory and applications, including manufacturing machines, electric motors, satellite station keeping, and HVAC. Other important themes developed in MERL's presentations concern adaptation, learning, and optimization in control systems.
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  •  NEWS   MERL Researchers Attend Modelica North American Users Group Meeting
    Date: November 11, 2015 - November 12, 2015
    Where: University of Connecticut
    MERL Contacts: Christopher Laughman; Scott Bortoff; Hongtao Qiao
    Research Area: Data Analytics
    Brief
    • MERL Researchers Scott A. Bortoff, Chris Laughman and Hongtao Qiao attended the North America Modelica User's Group Meeting, hosted by the University of Connecticut, November 11-12, 2015. Scott Bortoff gave the Keynote Address entitled "Using Modelica in Industrial Research and Development," and Chris Laughman and Hongtao Qiao each presented a paper on modelling of HVAC systems. The Meeting attracted approximately 80 Modelica users from a diverse set of companies and universities including United Technologies, Johnson Controls and Ford. Use of Modelica is accelerating in North America, lead by largely by automotive and similar "systems manufacturing" type companies.
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  •  NEWS   MERL researchers attend International Modelica Conference
    Date: September 21, 2015
    MERL Contacts: Scott Bortoff; Daniel Burns; Christopher Laughman
    Research Areas: Mechatronics, Data Analytics, Algorithms
    Brief
    • MERL researchers Scott Bortoff, Dan Burns and Chris Laughman attended the 11th Annual Modelica Conference in Versailles, France. Modelica is a computer language for modelling and simulation of multiphysical systems. There were 421 attendees, with representatives from Toyota, automobile companies, European universities and companies like Dassault. Conference topics included a plenary on cyber-physical systems modelling by Prof. Sangiovanni Vincentelli of UC Berkeley, new libraries for modelling HVAC systems, automobile systems and buildings, and research results for new solvers. An important trend is virtual modelling and simulation of building thermodynamics (scaling up to city districts), automotive systems (autonomous vehicles), and especially Factory Automation: Dassault is investing heavily in this area, focusing on smaller customers, with tools for 3D virtual modelling of assembly lines including machine dynamics (robotics), and in partnerships with Siemens and other European FA companies.
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  •  NEWS   MERL researchers presented 3 papers at the 5th IFAC Nonlinear Model Predictive Control Conference
    Date: September 17, 2015
    MERL Contacts: Stefano Di Cairano; Scott Bortoff; Abraham Goldsmith; Claus Danielson; Andrew Knyazev
    Research Areas: Mechatronics, Algorithms
    Brief
    • MERL researchers presented 3 papers at the 5th IFAC Nonlinear Model Predictive Control Conference. Approximately 150 attendees. Conference topics range from theory (existence, stability), to algorithms (optimization, design), to applications (process control, mechatronics, energy, automotive, aerospace). MERL was an industry sponsor for the conference. MERL researcher co-chaired the Industry Session on Industry perspective on Model Predictive Control. MERL researcher acted as Program Co-chair, organizing the conference program.
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  •  NEWS   International Journal of Control: publication by Matthew E. Brand, Scott A. Bortoff and Stefano Di Cairano
    Date: July 9, 2013
    Where: International Journal of Control
    MERL Contacts: Stefano Di Cairano; Matthew Brand; Scott Bortoff
    Research Areas: Algorithms, Mechatronics, Advanced Control Systems
    Brief
    • The article "Projection-free Parallel Quadratic Programming for Linear Model predictive Control" by Di Cairano, S., Brand, M. and Bortoff, S.A. was published in International Journal of Control
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  •  NEWS   ACC 2013: 7 publications by Yebin Wang, Arvind U. Raghunathan, Scott A. Bortoff, Yiming Zhao, Zafer Sahinoglu and Stefano Di Cairano
    Date: June 17, 2013
    Where: American Control Conference (ACC)
    MERL Contacts: Scott Bortoff; Stefano Di Cairano; Yebin Wang; Arvind Raghunathan
    Research Areas: Mechatronics, Electronics & Communications, Data Analytics
    Brief
    • The papers "Sub-optimal Control Design of a Semi-active Vibration Reduction System" by Wang, Y. and Utsunomiya, K., "Adaptive Estimation of State of Charge for Lithium-ion Batteries" by Fang, H., Wang, Y., Sahinoglu, Z., Wanda, T. and Hara, S., "Vehicle Yaw Dynamics Control by Torque-based Assist Systems Enforcing Driver's Steering Feel Constraints" by Zafeiropoulos, S. and Di Cairano, S., "Speed Profile Optimization for Optimal Path Tracking" by Zhao, Y. and Tsiotras, P., "Real-Time Energy-Optimal Trajeactory Generatin for a Servo Motor" by Zhao, Y., Wang, Y., Bortoff, S.A. and Ueda, K., "Global Optimization of Multi-period Optimal Power Flow" by Gopalakrishnan, A., Raghunathan, A.U., Nikovski, D., Biegler, L.T. and "Semismooth Equation Approach to Network Utility Maximization (NUM)" by Bai, L. and Raghunathan, A.U. were presented at the American Control Conference (ACC)
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  •  NEWS   CDC 2012: 3 publications by Yebin Wang, Scott A. Bortoff, Stefano Di Cairano and others
    Date: December 10, 2012
    Where: IEEE Annual Conference on Decision and Control (CDC)
    MERL Contacts: Stefano Di Cairano; Scott Bortoff; Yebin Wang
    Research Area: Mechatronics
    Brief
    • The papers "A Numerical Algorithm for Nonlinear L2-gain Optimal Control with Application to Vehicle Yaw Stability Control" by Milic, V., Di Cairano, S., Kasac, J., Bemporad, A. and Situm, Z., "The Rendezvous Dynamics under Linear Quadratic Optimal Control" by Di Cairano, S., Pascucci, C.A. and Bemporad, A. and "On the Optimal Trajectory Generation for Servomotors: A Hamiltonian Approach" by Wang, Y., Ueda , K. and Bortoff, S.A. were presented at the IEEE Annual Conference on Decision and Control (CDC)
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  •  TALK   Feedback Particle Filter and its Applications
    Date & Time: Wednesday, August 1, 2012; 12:00 PM
    Speaker: Prof. Prashant Mehta, University of Illinois at Urbana-Champaign
    MERL Host: Scott Bortoff
    Research Area: Mechatronics
    Brief
    • In my talk, I will present a self-contained introduction to nonlinear filtering, and describe some recent developments. Specifically, I will introduce the feedback particle filter and show how it admits an innovations error-based feedback control structure. The control is chosen so that the posterior distribution of any particle matches the posterior distribution of the true state given the observations. The subject of my talk is a new formulation of nonlinear filter (for Bayesian inference) that is based on concepts from optimal control and mean-field game theory. Nonlinear filtering is important to many applications in engineering, biology, economics, atmospheric sciences and neuroscience. Several applications will be described to illustrate the theoretical concepts.

      This is joint work with Tao Yang and Sean Meyn at the University of Illinois.
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  •  TALK   A Pole-Placement Approach to the Design of Robust Linear Multivariable Control Systems
    Date: Thursday, July 19, 2012
    Speaker: Rick Vaccaro, University of Rhode Island
    MERL Host: Scott Bortoff
    Research Area: Mechatronics
    Brief
    • The ability to directly specify the closed-loop poles of a multivariable control system is a major benefit of pole-placement algorithms for calculating state-feedback and observer gains. The drawback of these algorithms is the lack of any guarantee on the stability robustness of the resulting control system. The optimal control approach for calculating state-feedback gains (LQR) has a certain guaranteed robustness, but adding an observer (i.e. Kalman filter, LQG) can result in arbitrarily poor robustness. In this talk, a new pole-placement approach is introduced for calculating state-feedback and observer gains. The new approach optimizes robustness and gives impressive results, particularly for output feedback, observer-based control systems.
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  •  EVENT   ACC 2012 - Sponsored Session: Oppportunities at Mitsubishi Electric Research
    Date & Time: Wednesday, June 27, 2012; 12:00 PM - 1:30 PM
    MERL Contact: Scott Bortoff
    Location: Montreal, Canada
    Research Area: Mechatronics
    Brief
    • In this session, MERL researcher Scott Bortoff will describe Mitsubishi Electric Corporation (MELCO)'s businesses, discuss mechatronics and controls research at MERL and describe opportunities for collaboration and employment. Areas of current research interest include optimal control especially of nonlinear and hybrid systems, model predictive control, nonlinear dynamical systems, and modeling and control of multi-physical heterogeneous systems. Research projects at MERL typically address fundamental problems that are industrially-motivated, and involve application of advanced control theory or dynamical systems theory to MELCO products resulting in new technology that is transferred into the corporate R&D laboratories for subsequent product development. Areas of current application include elevators, HVAC, power generation and distribution, satellites, robot manipulation, servo systems and laser processing systems. MERL has a tradition of open collaboration and hosts visitors and interns especially during the summer months when our population increases by 50%. Researchers and students who have an interest in collaboration, visits, sabbatical leaves or permanent employment are invited.
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  •  NEWS   ACC 2012: 2 publications by Scott A. Bortoff, John C. Barnwell III and Stefano Di Cairano
    Date: June 27, 2012
    Where: American Control Conference (ACC)
    MERL Contacts: Stefano Di Cairano; Scott Bortoff
    Research Area: Mechatronics
    Brief
    • The papers "Further Developments and Applications of Network Reference Governor for Constrained Systems" by Di Cairano, S. and Kolmanovsky, I.V. and "Load Positioning in the Presence of Base Vibrations" by Shilpiekandula, V., Bortoff, S.A., Barnwell, J.C. and El Rifai, K. were presented at the American Control Conference (ACC)
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  •  NEWS   IFAC 2011: 2 publications by Matthew E. Brand, Scott A. Bortoff and Vijay Shilpiekandula
    Date: August 28, 2011
    Where: World Congress of the International Federation of Automatic Control (IFAC)
    MERL Contacts: Scott Bortoff; Matthew Brand
    Research Areas: Algorithms, Mechatronics
    Brief
    • The papers "Integrated Design and Control of Flexure-Based Nanopositioning Systems - Part I: Methodology" by Shilpiekandula, V. and Youcel-Toumi, K. and "A Parallel Quadratic Programming Algorithm for Model Predictive Control" by Brand, M., Shilpiekandula, V. and Bortoff, S.A. were presented at the World Congress of the International Federation of Automatic Control (IFAC)
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  •  NEWS   CCC 2011: publication by Scott A. Bortoff, Yebin Wang and others
    Date: July 22, 2011
    Where: Chinese Control Conference (CCC)
    MERL Contacts: Yebin Wang; Scott Bortoff
    Research Areas: Mechatronics, Advanced Control Systems
    Brief
    • The paper "Nonlinear Control Design for a Semi-active Vibration Reduction System" by Wang, Y., Utsunomiya, K. and Bortoff, S.A. was presented at the Chinese Control Conference (CCC)
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  •  NEWS   IASTED International Conference on Control and Applications 2010: publication by Scott A. Bortoff, Yebin Wang and others
    Date: July 15, 2010
    Where: IASTED International Conference on Control and Applications
    MERL Contacts: Yebin Wang; Scott Bortoff
    Research Areas: Mechatronics, Advanced Control Systems
    Brief
    • The paper "On the Output Transformation to an Observer Form" by Wang, Y., Lynch, A.F. and Bortoff, S.A. was presented at the IASTED International Conference on Control and Applications
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