EXPERTISE

• Electro-mechanical systems engineering & optimizing these systems for the best performance to cost ration across the full electrical and mechanical system
• Designing, modeling and optimization of dynamic systems and feedback control/servo systems
• Designing and developing sensor and data processing algorithms to solve real world problems
• Developing processes and tools support Simplexity’s goal of always producing high quality software and embedded firmware
• Leading technical teams
• Developing and analyzing requirements for development programs
• Scientific and embedded programming: C, C++, C#, MATLAB and Python
• Communicating complex technical topics to non-technical audiences

EXPERIENCE

Simplexity Product Development (2012-present)

• Performed duties in firmware, systems and controls engineering, project management and executive leadership
• Grew Simplexity’s embedded systems team from three to a team of electrical, firmware and systems engineers accounting for approximately half of the Simplexity engineering team
• Created software and firmware standard development processes deliver high quality, robust code
• Managed full projects with mechanical, electrical, firmware and software content to be on schedule and on budget
• Architected firmware and software systems, including a pipelined robotic processing systems capable of handling multiple items in flight simultaneously
• Developed software and firmware for consumer products, production line test fixtures and proof-of- concept prototypes
• Developed optimized motion control systems with both commercial off-the-shelf components and completely customized systems for high production volumes, typically reducing motion control subsystem cost by greater than 50%
• Created custom embedded algorithms such as:
  • Extended Kalman Filter based sensor fusion
  • Multi-move look-ahead trajectory planning and speed optimization for a consumer 3D printer
  • Observer based sensorless speed control algorithms for cost constrained systems

Xzeres Wind (2010-2012)

• Senior Systems Engineer
• Developed wind turbine system specification
• Lead Xzeres’ MKS (UK) Wind Turbine Design Certification effort, and achieving certification
• Performed mechanical analysis of critical components in the wind turbine
• Developed the blade load test specification document & test requirements
• Developed a full system simulation model for turbine control encompassing the National Renewable Energy Laboratory’s FAST aerodynamic model, electrical and mechanical drive components, and the real system control firmware, all in Matlab
• Developed algorithms for rotor and inverter control

Hewlett-Packard (1996-2010)

• Served in roles of mechanical and servo systems engineer, completing tenure as the Motion Controls Systems Team Lead for the OfficeJet Pro product line
• Developed feedback control algorithms & embedded firmware for printer motion systems
• Created motor and drive train specifications optimized for system cost and performance
• Developed dynamic thermal model for DC motors & run-time sensorless motor temperature control algorithm
• Designed injection molded plastic, elastomeric & sheet metal part

EDUCATION

• BS, Mechanical Engineering – Oklahoma State University
• MS, Mechanical Engineering, Automatic Control Systems – University of California, Berkeley
• Non-degree coursework – Computer Science – Stanford University

RECOGNITION

PATENTS

• 429,279  – Ornamental Design of an Inkjet Printer
• 429,759  – Ornamental Design of an Inkjet Printer
• 6,244,765  – Vibration Isolating Attachment System for Inkjet Carriages (Mechanical design)
• 6,666,375  – Rotary Encoders (Mechanical design of a low cost encoder position encoder disk design)
• 6,669,323  – Mechanical Deflection Estimation for Ink-Jet Service Station Motion Servo
• 6,674,260  – DC Motor Control (Calibration Based DC Motor Temperature Control)
• 7,692,399  – DC Motor Control (Dynamic Model Based DC Motor Temperature Control)
• 9,033,450  – Printer and method for controlling power consumption thereof
• 8,899,717  – Print speed determination based on a power budget
• 8,719,599  – Monitoring subsystem power

INTERESTS / OBSESSIONS

• Spending time with my wife and two sons
• Playing and watching soccer
• Snowboarding
• College Football & Basketball
• Making things move
• CNC Milling
• Embedded control systems

FAVORITE QUOTES

“Simplicity is the ultimate sophistication.”
— Leonardo da Vinci

“Gromit, that’s it! Cheese!”
— Wallace

BLOGS

• BREAKING DOWN OUR EMBEDDED FM PODCAST INTERVIEW
• 3 TIPS FOR LEADING A TECHNICAL TEAM WITHOUT MICROMANAGING
• BETTER FIRMWARE FASTER