Assistant Engineer

Shreejith Ravikumar

addtif@r.postjobfree.com 864-***-****

Education

Clemson University - International Center for Automotive Research, SC GPA: 3.9/4

Master of Science in Automotive Engineering Aug ’18 – Aug ’20

National Institute of Technology, Tiruchirapalli CGPA: 7.54/10

Bachelor of Technology in Mechanical Engineering Jul ’12 – May ’16

Research Experience

Clemson University Greenville, SC

Research Assistant, Dr. Pierluigi Pisu May’19 - Present

−Developing a Supervisory Safety Algorithm using barrier function for Obstacle Avoidance in low speed autonomous vehicles to override lower level navigation controller in case of high collision probability

−Verified the control method using MATLAB/Robotics and Simulation package

−Implementation of the control method in an autonomous golf cart vehicle controller (Microautobox)

−Developed plant model for dSPACE HIL setup for validation of the control algorithm on the vehicle controller

−Building electric vehicle Hardware-In-Loop platform for analyzing the effect of vehicle parameters on motoring and regeneration efficiency during standard drive cycles

−Implementation of Equivalent Consumption Minimization Strategy for controlling power split in a series hybrid powertrain and tuning the controller for various drive cycles

−Developed charging and discharging profiles for a different battery and building a second order equivalent circuit model of the battery

Deep Orange 9 Clemson University

Research Assistant, Dr. Robert Prucka Aug ’19 – Dec ‘19

−Debugging the control logic for pre-charging circuit in supervisory powertrain control system and implementing a revised control strategy in the vehicle control unit

−Configuring a hardware in loop simulation using dSPACE HIL simulator for implementing fault diagnostic tests

Academic Projects

Piston motion control of a Linear Free Piston Engine Generator (LFPEG) Sep ’19 - Dec ’19

−Modelled LFPEG integrating thermodynamic, electric machine and piston motion models and developed an adaptive Linear Quadratic Regulator Controller for controlling the TDC of piston and reducing the fuel consumption.

On-Board Diagnostics of Engine Idle Speed Control System Sep ’19 - Dec ’19

−Modelled the non-linear engine idle speed control system integrating combustion, crankshaft, and intake manifold pressure dynamics in Simulink. Designed a fault detector with a residual generator and active thresholds for the residuals to diagnose faults in throttle actuation and manifold pressure sensor using Generalized observer and unknown input observer based diagnostic schemes.

Energy management control strategy for series hybrid electric vehicle Feb ’19 - May ’19

−Developed a forward vehicle simulator for estimating fuel consumption under different driving conditions which involved modelling battery, engine and motor models using Willan’s scaled model approach. Formulated an equivalent consumption minimization strategy and tuned it for minimizing the equivalent fuel consumption and achieved 2025 cafe standards of 54.9 MPG for regulatory drive cycles.

Active roll stabilization using Model Predictive Control (MPC) strategy for an SUV Feb ’19 - May ’19

−Developed a simplified combined bicycle-roll model in Simulink and designed an active model predictive controller for reducing roll. Evaluated the controller using a CARSIM-Simulink co-simulation model of SUV and optimized the controller for standard driving maneuvers.

Professional Experience

Bajaj Auto Limited, Akurdi Pune, India

Senior Engineer, CAE - NVH, Research and development Jul ’16 - Jun ’18

−Developed FEA model of powertrain assemblies for NVH simulations and validated the model with test by Modal correlation with a MAC (Modal Assurance Criteria) of 0.9 and built NVH parameter database using the model

−Worked on drivetrain noise reduction in powertrain components of an upcoming electric vehicle

Skills (Proficient - (P); Intermediate – (I); Beginner – (B))

Software and Tools: MATLAB(P), Simulink(P), GT-Power(I), dSPACE Control Desk(P), CARSIM(P), Raptor-Dev(B), CANalyzer(B), CAN Vector(B), Test Lab(I)

Programming Skills: C(B), C++(B), Python(I), Tcl/Tk(B)

Project Management tools: Product Development(I), AHP(I), QFD(I), FMEA(P), APQP(I), BOM(I), FTA(P)

Related Coursework

Automotive control systems design Hybrid powertrain controls Alternative Energy Sources Vehicle safety and stability control systems On-board diagnostics Automotive electronics integration Engines system analysis Automotive Systems

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