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Professional Profile

profile

My name is John Swensen, I'm a roboticist, engineer, and app developer. I am currently an Associate Research Scientist in the GRAB Lab at Yale University under the direction of Dr. Aaron M. Dollar, after having completed my PhD at Johns Hopkins University in December 2011 under the direction of Dr. Noah J. Cowan.

My broad research interests are in modeling, estimation, and control for robotic system, with a specific focus on medical robotics and continuum systems. In my dissertation I developed new dynamics models for estimation and control of steerable needles, which included the nonholonomic motion and torsion of the needle. After graduation, I joined a design-­oriented lab for my postdoctoral research to complement my estimation and controls skill set with a foundation in robot design principles for continuum and compliant robotics systems. My experience as a postdoc and research scientist has shown me how collaborations between different styles of robotics research (e.g. applied controls and mechanical design) can result in achievements not capable without the collaboration.

As a graduate student, I was also able to gain experience as an educator through serving as a teaching assistant and through co-­developing and co-­teaching a two week winter session course on the Kalman filter. These experiences illustrated to me how rewarding it can be to teach, train, mentor, and inspire as an educator. I also believe that my time spent working in industry between undergraduate and graduate degrees has helped my to be aware of how to prepare students for industry or further academic pursuits equally well. As a postdoctoral associate I have continued my preparation by mentoring undergraduates and graduate students.

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Journal

Publications

  • J. P. Swensen, L. U. Odhnew, B. Araki, and A. M. Dollar. Printing 3d electrical traces in additive manufactured parts via low melting temperature metals. ASME Journal of Mechanisms and Robotics, 2014 (accepted).
  • J. P. Swensen, A. I. Nawroj, P. E. I. Pounds, and A. M. Dollar. Active cells for redundant and configurable articulated structures. Smart Materials and Structures 23(10):104003, 2014. Link
  • J. P. Swensen, M. Lin; A. M. Okamura Okamura, N. J. Cowan, Torsional Dynamics of Steerable Needles: Modeling and Fluoroscopic Guidance, Biomedical Engineering, IEEE Transactions on , vol.61, no.11, pp.2707,2717, Nov. 2014. Link
  • A. I. Nawroj, J. P. Swensen, and A. M. Dollar. Electrically conductive bulk composites through a contact-connected aggregate. PLoS ONE 8(12):e82260, 12 2013. Link
  • J. P. Swensen and A. M. Dollar. The connectedness of packed circles and spheres with application to conductive cellular materials. PLoS ONE 7(12):e51695, 12 2012. Link
  • J. P. Swensen, R. Balasubramanian, and A. M. Dollar. Performance of serial underactuated mechanisms: Number of degrees of freedom and actuators. ASME Journal of Mechanisms and Robotics, 2014 (submitted).
  • J. P. Swensen and A. M. Dollar. Optimization of spring antagonists for nitinol shape memory alloy actuators (In prep).
  • V. Kallem, J. P. Swensen, M. Dewan, G. D. Hager, and N. J. Cowan. Encoding self movement via kernel projections (In prep).

Refereed

Conference

Articles

  • J. P. Swensen, A. I. Nawroj, P. E. I. Pounds, and A. M. Dollar. Simple, scalable active cells for articulated robot structures. Robotics and Automation (ICRA), 2014 IEEE International Conference on, pp. 1241–1246, May 2014.
  • J. P. Swensen and A. M. Dollar. Optimization of parallel spring antagonists for nitinol shape memory alloy actuators. Robotics and Automation (ICRA), 2014 IEEE International Conference on, pp. 6345–6349, May 2014.
  • J. P. Swensen and N. J. Cowan. An almost global estimator on SO(3) with measurement on S2. Proc. of AACC American Control Conference (ACC), 2012, pp. 1780–1786, 2012.
  • J. P. Swensen and N. J. Cowan. Torsional dynamics compensation enhances robotic control of tip-steerable needles. Proc. of IEEE International Conference on Robotics and Automation (ICRA), 2012, pp. 1601–1606, 2012.
  • V. Kallem, M. Dewan, J. P. Swensen, G. D. Hager, and N. J. Cowan. Kernel-based visual servoing. Proc. IEEE/RSJ IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), pp. 1975–1980, Oct. 2007.
  • D. S. Acton, T. Towell, J. Schwenker, J. Swensen, D. Shields, E. Sabatke, L. Klingemann, A. R. Contos, B. Bauer, K. Hansen, P. D. Atcheson, D. Redding, F. Shi, S. Basinger, B. Dean, and L. Burns. Demonstration of the james webb space telescope commissioning on the JWST testbed telescope. Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, vol. 6265, p. 21, 2006.
  • M. Torrie, D. Cripps, and J. Swensen. Joint architecture for unmanned ground vehicles (JAUGS) applied to autonomous agricultural vehicles. Proc: Automation technology for off-road equipment, pp. 1–12, 2002.

Submitted

Conference

Articles

  • J. P. Swensen, L. U. Odhner, B. Araki, and A. M. Dollar. Injected 3d electrical traces in additive manufactured parts with low melting temperature metals. IEEE International Conference on Robotics and Automation (ICRA), 2015.
  • A. I. Nawroj, J. P. Swensen, and A. M. Dollar. Compliant, articulated robotic structures using centimeter-scale active cells. IEEE International Conference on Robotics and Automation (ICRA), 2015.

Contributed

Articles,

Abstracts,

and

Posters

  • A. I. Nawroj, J. P. Swensen, and A. M. Dollar. Development of Active-Cells for Macroscopically Deformable Structures. Proc. ASME Conference on Smart Materials, Adaptive Structures, and Inteligent Systems (SMASIS), 2014.
  • J. P. Swensen and A. M. Dollar. Active-cells for the Construction of Redundant and Configurable Articulate Structures. Proc. ASME Conference on Smart Materials, Adaptive Structures, and Inteligent Systems (SMASIS), 2013.
  • A. I. Nawroj, J. P. Swensen, and A. M. Dollar. A Bulk Conductive Polymer Using Embedded Macroscopic Copper Cells. To appear in Proc. ASME Conference on Smart Materials, Adaptive Structures, and Inteligent Systems (SMASIS), 2013.
  • J. P. Swensen and A. M. Dollar. Towards hyper-redundant and super-configurable articulated structures. Proc. ASME Conference on Smart Materials, Adaptive Structures, and Inteligent System (SMASIS), pp. 3888–3895, 2012.
  • J. P. Swensen and N. J. Cowan. Modeling, estimation, and control of tip-steerable needles with torsional dynamics, Sept 2011. Presented at the Needle Steering Demo Session of 2011 IEEE/RSJ International Conference on Intelligent Robotics and Systems.
  • J. P. Swensen, R. J. Webster III, and N. J. Cowan. Active cannulas: Applications to needle steering, Sept 2008. Presented at the Needle Steering Workshop at 2008 Medical Image Computing and Computer Assisted Intervention Society conference.
  • J. P. Swensen, R. J. Webster III, and N. J. Cowan. Image guidance of active cannulas, Jan 2009. Presented at the IEEE-RAS/IFRR Winter School of Robotics Science on Medical Robotics and Computer-Integrated Interventional Systems.

Thesis

  • J. P. Swensen. Torsional Dynamics and Rotational Estimation of Tip-Steerable Needles. The Johns Hopkins University, 2011.

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Education and Work Experience top-arrow

employment

2014 - present

GRAB Lab, Yale University

  • Advisor:Prof. Aaron M. Dollar
    Position:Associate Research Scientist
    Department:Mechanical Engineering and Materials Science
  • Research areas

    • An active cell approach to modular robotics and adaptive structures
    • Degrees of underactuation in robotic grippers
    • Rapid prototyped circuit through injection of low melting point metals

employment

2011 - 2014

GRAB Lab, Yale University

  • Advisor:Prof. Aaron M. Dollar
    Position:Postdoctoral Associate
    Department:Mechanical Engineering and Materials Science
  • Research areas

    • An active cell approach to modular robotics and adaptive structures
    • Degrees of underactuation in robotic grippers

employment-second

2006 - 2011

LIMBS Lab, The Johns Hopkins University (M.S.En. '09, Ph.D. '12)

  • Advisor:Prof. Noah J. Cowan
    Department:Mechanical Engineering
  • Research areas

    • Torsional modeling and control of tip-steerable needles
    • Attitude estimation based on Lie group invariant estimators
    • Kernel-based visual servoing

employment-third

2003 - 2006

Ball Aerospace and Technologies Corporation

  • Department:Software Engineering
    Position:Engineering I
  • Projects

    • James Webb Space Telescope
    • Star tracker imager simulations

employment-second

2000 - 2003

Autonomous Solutions, Inc.

  • Position: Engineering intern
  • Research areas

    • Autonomous control of farm, construction, and mowing equipment
    • Selected and maintained base station to vehicle communications hardware and developed JAUS communication protocol software
    • Senior Capstone Project: Radar-based obstacle detection system

employment-second

1997 - 2003

Utah State University (B.S. '03)

  • Department:Electrical Engineering
  • Study areas

    • Robotics
    • Control systems
    • Real-time systems

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