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Raul G. Longoria
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Journal Articles

Parameter Identification of Cardiovascular System Model Used for Left Ventricular Assist Device Algorithms

Suraj R. Pawar, Ethan S. Rapp, Jeffrey R. Gohean, Raul G. Longoria
Journal: Journal of Engineering and Science in Medical Diagnostics and Therapy
Article Type: Research-Article
ASME J of Medical Diagnostics. February 2022, 5(1): 011006.
Paper No: JESMDT-21-1010
DOI: https://doi.org/10.1115/1.4053065
Published Online: January 12, 2022
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Topics: Algorithms, Cardiovascular system, Signals, Ventricular assist devices, Pressure, Simulation, Physiology, Design, Flow (Dynamics)
Proceedings Papers

Challenges in Controlling Active Suspensions for High-Speed Off-Road Vehicles

Keyanoush Efatpenah, Joseph H. Beno, Steven P. Nichols, Raul G. Longoria
Proc. ASME. IMECE2000, Advanced Vehicle Technologies, 181-186, November 5–10, 2000
Paper No: IMECE2000-1221
DOI: https://doi.org/10.1115/IMECE2000-1221
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Topics: Off-road vehicles, Suspension systems, Simulation, Damping, Roads, Control algorithms, Control equipment, Displacement
Proceedings Papers

A Simulation-Based Synthesis Method for Engineering Systems That Contain Active Elements

Thomas J. Connolly, Raul G. Longoria
Proc. ASME. IMECE2000, Dynamic Systems and Control: Volume 2, 831-838, November 5–10, 2000
Paper No: IMECE2000-2382
DOI: https://doi.org/10.1115/IMECE2000-2382
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Topics: Engineering systems and industry applications, Simulation, Design, Actuators, Complex systems, Computer simulation, Cycles, Flow (Dynamics), Modeling, Retrofitting
Journal Articles

A Respiratory Mechanics Model of the Human Lung for Positive Pressure Breathing at High Altitude

Mark M. Koeroghlian, Steven P. Nichols, Raul G. Longoria
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. October 2020, 142(10): 101004.
Paper No: DS-20-1020
DOI: https://doi.org/10.1115/1.4047220
Published Online: June 8, 2020
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Topics: Flow (Dynamics), Lung, Pressure, Simulation
Journal Articles

Estimation of Systemic Vascular Resistance Using Built-In Sensing From an Implanted Left Ventricular Assist Device

Ethan S. Rapp, Suraj R. Pawar, Jeffrey R. Gohean, Erik R. Larson, Richard W. Smalling, Raul G. Longoria
Journal: Journal of Engineering and Science in Medical Diagnostics and Therapy
Article Type: Research-Article
ASME J of Medical Diagnostics. November 2019, 2(4): 041008.
Paper No: JESMDT-19-1014
DOI: https://doi.org/10.1115/1.4045204
Published Online: November 14, 2019
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Topics: Algorithms, Cardiovascular system, Flow (Dynamics), Pressure, Pumps, Testing, Ventricular assist devices, Simulation, Kalman filters, Heart failure
Journal Articles

Mission Feasibility Assessment for Mobile Robotic Systems Operating in Stochastic Environments

Jonathan R. LeSage, Raul G. Longoria
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. March 2015, 137(3): 031009.
Paper No: DS-13-1523
DOI: https://doi.org/10.1115/1.4028035
Published Online: October 21, 2014
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Topics: Batteries, Robotics, Probability, Vehicles
Proceedings Papers

Two-Port Synthesis for Retrofit Design of Electric Ship Control Surface Actuation Systems

Jonathan R. LeSage, William Shutt, Raul G. Longoria
Proc. ASME. DSCC2010, ASME 2010 Dynamic Systems and Control Conference, Volume 1, 29-36, September 12–15, 2010
Paper No: DSCC2010-4145
DOI: https://doi.org/10.1115/DSCC2010-4145
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Topics: Design, Ships, Actuators, Circuits, Energy storage, Underwater vehicles
Proceedings Papers

Estimating Traction Coefficients of Friction for Small-Scale Robotic Tracked Vehicles

Tehmoor M. Dar, Raul G. Longoria
Proc. ASME. DSCC2010, ASME 2010 Dynamic Systems and Control Conference, Volume 2, 157-164, September 12–15, 2010
Paper No: DSCC2010-4228
DOI: https://doi.org/10.1115/DSCC2010-4228
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Topics: Friction, Robotics, Tracked vehicles, Traction, Testing, Trajectories (Physics), Dynamic models, Kalman filters, Kinematics, Noise (Sound)
Proceedings Papers

Robust Design of Flexure Based Nano Precision Compliant Mechanisms With Application to Nano Imprint Lithography

Chinmaya B. Patil, S. V. Sreenivasan, Raul G. Longoria
Proc. ASME. IDETC-CIE2008, Volume 4: 20th International Conference on Design Theory and Methodology; Second International Conference on Micro- and Nanosystems, 701-711, August 3–6, 2008
Paper No: DETC2008-50114
DOI: https://doi.org/10.1115/DETC2008-50114
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Topics: Bending (Stress), Compliant mechanisms, Design, Lithography, Flexure mechanisms, Errors, Machining, Optimization, Calibration, Screws
Proceedings Papers

Analytical and Experimental Characterization of Parasitic Motion in Flexure-Based Selectively Compliant Precision Mechanisms

Chinmaya B. Patil, S. V. Sreenivasan, Raul G. Longoria
Proc. ASME. IDETC-CIE2008, Volume 2: 32nd Mechanisms and Robotics Conference, Parts A and B, 393-404, August 3–6, 2008
Paper No: DETC2008-50111
DOI: https://doi.org/10.1115/DETC2008-50111
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Topics: Bending (Stress), Experimental characterization, Flexure mechanisms, Screws, Machining, Compliant mechanisms, Rotation, Degrees of freedom, Errors, Kinematics
Proceedings Papers

Analytical Representation of Nano-Scale Parasitic Motion in Flexure-Based Selectively Compliant Mechanisms

Chinmaya B. Patil, S. V. Sreenivasan, Raul G. Longoria
Proc. ASME. IDETC-CIE2007, Volume 3: 19th International Conference on Design Theory and Methodology; 1st International Conference on Micro- and Nanosystems; and 9th International Conference on Advanced Vehicle Tire Technologies, Parts A and B, 775-784, September 4–7, 2007
Paper No: DETC2007-35114
DOI: https://doi.org/10.1115/DETC2007-35114
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Topics: Bending (Stress), Compliant mechanisms, Nanoscale phenomena, Errors, Manufacturing, Modeling, Calibration, Design, Kinematics, Screws
Journal Articles

An Approach for Actuation Specification and Synthesis of Dynamic Systems

Thomas J. Connolly, Raul G. Longoria
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. May 2009, 131(3): 031012.
DOI: https://doi.org/10.1115/1.3089558
Published Online: March 23, 2009
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Topics: Actuators, Design
Proceedings Papers

Variable Fidelity Modeling of Vehicle Ride Dynamics Using an Element Activity Metric

Javier A. Kypuros, Raul G. Longoria
Proc. ASME. IMECE2002, Dynamic Systems and Control, 525-534, November 17–22, 2002
Paper No: IMECE2002-39288
DOI: https://doi.org/10.1115/IMECE2002-39288
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Topics: Dynamics (Mechanics), Modeling, Vehicles, Simulation, Switches
Journal Articles

Model Synthesis for Design of Switched Systems Using a Variable Structure System Formulation

Javier A. Kypuros, Raul G. Longoria
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. December 2003, 125(4): 618–629.
DOI: https://doi.org/10.1115/1.1636774
Published Online: January 29, 2004
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Topics: Design, Hydraulic pumps, Pumps, Switches, Variable structure systems, Simulation, String, Valves
Journal Articles

Signal Analysis Using Karhunen-Loe`ve Transformation: Application to Hydrodynamic Forces

Irem Y. Tumer, Research Scientist,, Raul G. Longoria, Associate Professor, Kristin L. Wood, Associate Professor
Journal: Journal of Offshore Mechanics and Arctic Engineering
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. August 2000, 122(3): 208–213.
DOI: https://doi.org/10.1115/1.1286923
Published Online: February 7, 2000
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Topics: Eigenvalues, Flow (Dynamics), Fluid-dynamic forces, Signals, Cylinders