Dr Bryan Ruddy

SB SM PhD MIT

Lecturer

In: Engineering Science » Faculty of Engineering

Research Fellow

Biography

Bryan graduated from the Massachusetts Institute of Technology in the USA, with a Bachelor of Science (SB) in 2004, a Master of Science (SM) in 2006, and a PhD in 2012, all specialising in Mechanical Engineering. His doctoral research, supervised by Professor Ian W. Hunter in the MIT BioInstrumentation Laboratory, focused on the design and modelling of compact, high-force linear electric motors for use in robotics and in medical devices.

Bryan joined the Auckland Bioengineering Institute as a Research Scientist upon the completion of his PhD, in July 2012, to continue his work on actuator design and control with particular application to biological instrumentation. Bryan is now a Research Fellow at the ABI. He also holds a joint appointment with the Department of Engineering Science where he is a Lecturer.

Research | Current

Bryan's work focuses on the development of miniaturized actuation and control systems for use in muscle work-loop calorimetry (the Cardiac Myometer), the design of improved Lorentz-force motors for needle-free jet injection, and the design of high-performance linear synchronous motors for rehabilitation robots and exoskeletons. To accomplish these goals, he works to develop new analytical solutions to the governing equations of these actuators, and uses them for design optimization.

Teaching | Current

BIOMENG 241: Instrumentation and Design

BIOMENG 791: Advanced Biomedical Engineering Design

ENGSCI 700: Part IV (Honours) project

Postgraduate supervision

Main Supervisor

PhD

Linh Ngoc (Nick) Do, Linear synchronous motor design for needle-free injection
Soroosh Haji Hosseinnejad, High stroke-to-length ratio direct-drive electromagnetic actuators for upper limb rehabilitation robots

Co-Supervisor

PhD

James McKeage, High-volume jet-injection
Kieran Brennan, Real-time fluid penetration imaging for needle-free jet-injection
Jiali Xu, Needle-free blood extraction for insulin therapy using a controllable jet injector
Bahareh Madadkhahsalmassi, Just-in-time glucose sensing for a jet-injector based diabetes management system

Areas of expertise

Actuator technology
Analytical approaches to continuum modelling and design optimization
Bioinstrumentation

Selected publications and creative works (Research Outputs)

Do, N. N. L., Taberner, A. J., & Ruddy, B. P. (2017). Design of a linear permanent magnet synchronous motor for needle-free jet injection. 2017 IEEE Energy Conversion Congress and Exposition (ECCE), 4734-4740. Cincinnati, OH, USA. 10.1109/ECCE.2017.8096806
Other University of Auckland co-authors: Andrew Taberner
Ruddy, B., Dixon, A. W., Williams, R. M. J., & Taberner, A. J. (2017). Optimization of portable electronically-controlled needle-free jet injection systems. IEEE/ASME Transactions on Mechatronics, 22 (5), 2013-2021. 10.1109/TMECH.2017.2725345
URL: http://hdl.handle.net/2292/36184
Other University of Auckland co-authors: Alex Dixon, Andrew Taberner
Ruddy, B. P. (2017). Application of the thermal fin approximation to modeling voice coil magnetic fields and performance. IEEE Transactions on Magnetics, 53 (5)10.1109/TMAG.2017.2678464
Li, X., Ruddy, B., & Taberner, A. (2016). Characterization of needle-assisted jet injections. Journal of Controlled Release, 243, 195-203. 10.1016/j.jconrel.2016.10.010
URL: http://hdl.handle.net/2292/31256
Williams, R. M., Ruddy, B. P., Hogan, N. C., Hunter, I. W., Nielsen, P. M., & Taberner, A. J. (2016). Analysis of Moving-Coil Actuator Jet Injectors for Viscous Fluids. IEEE Transactions on Biomedical Engineering, 63 (6), 1099-1106. 10.1109/TBME.2015.2482967
URL: http://hdl.handle.net/2292/29107
Other University of Auckland co-authors: Poul Nielsen, Andrew Taberner
Ruddy, B. P., Mckeage, J. W., Williams, R. M. J., Nielsen, P. M. F., & Taberner, A. J. (2015). A compound ampoule for large-volume controllable jet injection. 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 7341-7344. Milan, Italy. 10.1109/EMBC.2015.7320087
URL: http://hdl.handle.net/2292/27608
Other University of Auckland co-authors: James Mckeage, Poul Nielsen, Andrew Taberner
Johnston, C. M., Han, J.-C., Ruddy, B. P., Nielsen, P. M. F., & Taberner, A. J. (2015). A high-resolution thermoelectric module-based calorimeter for measuring the energetics of isolated ventricular trabeculae at body temperature. American journal of physiology. Heart and circulatory physiology, 309 (2), H318-H324. 10.1152/ajpheart.00194.2015
URL: http://hdl.handle.net/2292/26745
Other University of Auckland co-authors: Andrew Taberner, Poul Nielsen, June-Chiew Han
Ruddy, B. P., Taberner, A. J., & Boyce-Bacon, J. (2015). Optimization of Linear Permanent Magnet Synchronous Motors for Needle-free Jet Injection. Paper presented at Int Aegean Conference on Electrical Machines and Power Electronics (ACEMP) / Int Conference on Optimization of Electrical and Electronic Equipment (OPTIM) / Int Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION), Side, TURKEY. 2 September - 4 September 2015. 2015 INTL AEGEAN CONFERENCE ON ELECTRICAL MACHINES & POWER ELECTRONICS (ACEMP), 2015 INTL CONFERENCE ON OPTIMIZATION OF ELECTRICAL & ELECTRONIC EQUIPMENT (OPTIM) & 2015 INTL SYMPOSIUM ON ADVANCED ELECTROMECHANICAL MOTION SYSTEMS (ELECTROMOTION). (pp. 7).
URL: http://hdl.handle.net/2292/28079
Other University of Auckland co-authors: Andrew Taberner