Products: Mako robot for Shoulder, Saw/drill end-effectors, Service & Manufacturing (SM) automationAchievements: Mako Shoulder release, End-effector embedded firmware upgrades, SM enhancements-Code in embedded C to write applications running on QNX to create haptic solutions for Mako Shoulder-Design, architect and program baremetal firmware to control motors using TM4C Tivaware platform in sensorless control mode-Design and write MATLAB scripts to prototype robotic functionalities, to create compiled robot utilities and to program service/manufacturing scripts such as tracker to camera visibility, robot homing, pre-surgery (accuracy, status, logs) checks, etc.

-Product: Triathlon AS-1 and Mako ordering system, Joint Replacement portal, AS-1 surgeon dashboard, request handling back-end systems-Achievements: successful launches of web and cloud services that enables Patient Specific Solutions, Triathlon AS-1 and Mako implants-Design front-end and back-end services that enables surgical case ordering systems-Engineer data interfaces and lead cross-functional system integration-Architect scalable and resusable software solutions and APIs to allow consumers to extract Stryker case related information for surgery planning-Apply Agile best practices to ensure on-time delivery and budget constraint-Employ SysML techniques such as behavioral diagrams, requirements, etc. to enable effective communications with various stakeholders who may or may not have software backgrounds

Refer to my role as Staff System Engineer

-Product: Lead the development of Hardware-in-a-Loop (HiL) automated testing, software verification/validation and release infrastructures -Achievements: Functional HiL in Q1 2019, automated software release/checkout tools, CAN logging application-Architected and deployed Hardware-in-a-Loop (HiL) test benches to enable automated testing on control software schemes such as fault detection, boat/gyro transient performance, etc.-Utilized Simulink graphical programming with associated toolboxes such as Stateflow, Vehicle Network, CAN libraries and code generation to embedded Real-Time targets to design automated software that exacts fault applications and auto-verifies results-Designed MATLAB GUI and command line interface for MotoHawk code generation, calibration methods, and data processing scripts that enables automated software release and checkout-Developed and deployed a light and easy-to-use CAN logging windows application using C# with the integration of Kvaser CANlib -Assisted in testing and debugging internally-developed automotive controller and its Simulink code generation toolchain in aspects such as CAN drivers, DAC outputs, etc,

-Product: Active feedback navigational guidance system to improve drain placement accuracy for external ventricular drain (EVD) operations -Led a team of 3 overseeing all electrical engineering from design to requirements to verifications in preparation for FDA submission and manufacturing -Designed positional tracking devices by using rotary/linear optical and magnetic encoders, potentiometers, optical laser, and grid contacts -Utilized baremetal C to process and translate encoder quadrature steps into angular information -Built error handling algorithm and fault prevention mechanism to ensure the consistency and accuracy of positional detector using digital feedback loop, bit-banging algorithm, software loop control, fault string annunciation, etc.-Prototyped test and experimental fixtures such as targeting a grid map with lasers, crosstalk simulation with ribbon cable, encoder simulator using bit-banging and phase shifting algorithm, etc.

-Product: John Deere sprayer vehicle with variable timing configuration to maximize fertilizer coverage efficiency-Coded in baremetal C to program HYDAC TTC-30 (Infineon XC 22xx microcontroller) controller that outputs PWM to control solenoid-actuated fertilizer sprayers as a function of vehicle speed-Utilized concepts such as bit-bang, CANbus protocol, and loop control to provide unique PWM with features such as phase shifts, soft limits, HW/SW error accommodation, major/minor loop integrations, etc.-Accomplished all contract objectives with fully functional farming vehicle and features such as spraying with variable duty cycle plus phase shifts, error and user alarm properly displayed

-Developed an affordable solution to capture current signature for induction motor’s health and preventive diagnosis-Acted as a grading support as well as a laboratory supervisory assistant

-Troubleshot field events such as engine surge, sensor failures, etc. for large international airlines such as Etihad, Delta, etc.-Utilized engine model to simulate and verify performance and operability behaviors of engines-Studied trend data on in-service engines, aerothermal, and environmental effects (such as ambient temperature, sand particle ingestion, fan blade dents and damages) to evaluate the necessity for engine overhauls

-Led the development of the on-board maintenance system (OMS) that allows the easibility and effectiveness of aircraft and engine maintenance-Acted as the sole designer and verification specialist that defined, applied and tested the ARINC 604 communication protocol to the Electronic Engine Controller (EEC)-Coordinated tasks and objectives between large suppliers such as Rockwell Collins-supplier of the OMS equipment, UTC Aerospace Systems-assembly code supplier for the EEC, and Embraer-the aircraft producer.-Outcome: Embraer was successfully able to perform pre-production integration of the OMS equipment and the EEC onto the aircraft, that allows thrust reverser maintenance activities

-Assisted design engineers in hardware revision, prototype assembly, and specification assessment-Supported software engineers in firmware development, testing matrix, and Wireless HART technology-Conducted EMC tests on Foundation Fieldbus devices; such tests include Burst, Surge, ESD, RF noise, and more

-Maintained electrical equipment such as oscilloscopes, multi-meters, DC power supply and more-Renovated test procedures and equipment to enhance students’ laboratory experience-Provided technical support to ensure that students successfully satisfy laboratory objectives