David Rizkalla Email & Phone Number

Los Altos, Ca, Us

Ann Arbor, Michigan, United States

- Developing an autonomous controls system from the ground up for the first time in program history

Ann Arbor, Michigan, United States

- Implementing digital signal processing strategies on mission-critical sensors in STM32 C code - Creating dynamic and kinematic-based state estimation algorithms for both battery and vehicle dynamic states - Designing control algorithms for torque vectoring, regenerative braking, traction control, launch control, and current control --> Torque Vectoring yielded an improvement of ~0.3 g’s of lateral acceleration, and ~15 deg/s of yaw rate in skidpad … Show more - Implementing digital signal processing strategies on mission-critical sensors in STM32 C code - Creating dynamic and kinematic-based state estimation algorithms for both battery and vehicle dynamic states - Designing control algorithms for torque vectoring, regenerative braking, traction control, launch control, and current control --> Torque Vectoring yielded an improvement of ~0.3 g’s of lateral acceleration, and ~15 deg/s of yaw rate in skidpad --> Regenerative Braking yielded energy recovery of 5-10% depending on selected regen mode --> Current Control reliably limited pack current draw to constant and dynamic current limits - Leading integration of controls algorithms with comprehensive vehicle dynamics - Leading calibration and tuning through both simulation and trackside modifications from driver feedback and telemetered data - Writing STM32 C code for digital signal processing of critical sensors and communications over the CAN bus and UART Show less

Ann Arbor, Michigan, United States

- Modeled and implemented torque vectoring and regenerative braking vehicle control algorithms in SIMULINK- Tested controls algorithms while receiving driver feedback and telemetered data to make trackside changes - Created a WinDarab script which provided continuous and sectored tire temperature data

Palo Alto, California, United States

- Produced a full pedal map and partial torque path data replay simulation to provide training data for an autopilot neural net - Improved efficiency by ~1.38 Wh/mi on the Cybertruck platform by implementing a lash torque control logic fix - Completed frequency analysis and discretization of a lead-lag compensator-based closed loop controller on vehicle acceleration for use in autopilot operation - Characterized the regenerative braking deceleration limit across the vehicle’s speed… Show more - Produced a full pedal map and partial torque path data replay simulation to provide training data for an autopilot neural net - Improved efficiency by ~1.38 Wh/mi on the Cybertruck platform by implementing a lash torque control logic fix - Completed frequency analysis and discretization of a lead-lag compensator-based closed loop controller on vehicle acceleration for use in autopilot operation - Characterized the regenerative braking deceleration limit across the vehicle’s speed and SOC ranges due to cell charge current limits to inform control strategies for A/B-pedal regen blending - Provided SIL coverage for novel autopilot interfaces with the drive inverter Show less

Denver, Colorado, United States

- Created a novel controls algorithm for magnetorquer actuated momentum control - Decreased the system momentum through half an orbital period by 91.2% - Decreased the time to converge to an approximate zero system momentum by 81.63% - Updated the slew planning guidance algorithms with a novel approach to avoid configured keep out zones in slew profiles - Implemented a PD controller to properly limit acceleration in a gimbal model - Worked in a highly… Show more - Created a novel controls algorithm for magnetorquer actuated momentum control - Decreased the system momentum through half an orbital period by 91.2% - Decreased the time to converge to an approximate zero system momentum by 81.63% - Updated the slew planning guidance algorithms with a novel approach to avoid configured keep out zones in slew profiles - Implemented a PD controller to properly limit acceleration in a gimbal model - Worked in a highly modular and extendable software stack intended for user configuration, primarily with Git and C++ Show less

Palo Alto, California, United States

- Diagnosed and serviced consumer Tesla vehicles in a fast-paced environment - Successfully identified and completed jobs ranging from door handle replacements to power conversion system faults and drive unit/drive inverter replacements - Analyzed log data and researched in Tesla databases to diagnose cars - Mastered many physical skills of working with tools in a shop environment

Los Altos, California, United States

Tutored students in classes including AP Calculus AB, AP Phsyics A, Pre-Calculus, and other various math and physics courses. Assessed and identified student needs/areas of improvement and defined study plans to help them successfully pass AP courses and earn college credits

Bachelor Of Science In Engineering - Bse, Engineering Physics With A Concentration In Controls Engineering, Class Of 2025

Activities and Societies: MRacing Formula SAE

Bachelor'S Degree, Physics

Activities and Societies: Varsity NCAA DIII Baseball - Occidental College Tigers

High School Diploma

Activities and Societies: Founder and President of SFHS Career Club, Board of Science and Engineering Club, Varsity Baseball, Scholar.