Illinois Tool Works Appleton , WI 54914
ITW Welding continues to build its capabilities in embedded systems development as a core competency in digitally controlled welding equipment, processes, and systems. To support this effort, we are looking for a Senior Controls Engineer to play a key role in both R&D and New Product Development for welding and heating equipment. The Senior Controls Engineer will be a key contributor in the investigation, development, and implementation of digital control systems for new and innovative products with three key areas of focus; power conversion, wire feed delivery, and weld process control. This position requires a highly motivated individual with exceptional communication and interpersonal skills to work collaboratively across multi-discipline project teams consisting of electrical, software, mechanical and welding engineers.
Establish controls architectures for a variety of welding equipment platforms.
Model and derive transfer functions (Laplace and Z-domain) for power conversion control, wire feed motor control and various weld process controls
Design PID, LEAD/LAG and other forms of compensators to meet steady state and dynamic requirements
Work closely with power conversion and software engineers to validate control loop performance and stability. Develop simulation models correlating with measured results
Bachelor's Degree in Electrical Engineering (Master's Degree with Controls emphasis preferred) with a minimum of 7 years of experience.
Experience designing control systems for power conversion equipment
Experience designing control systems for brushed and brushless DC motors
Experience with Z-transforms using backward, forward and trapezoidal approximation rules
Knowledgeable on analog signal conditioning and digital sampling requirements
Knowledgeable on digital signal processing and filter design (FIR, IIR, Kalman, etc.)
Knowledgeable on modern, classic and state variable feedback techniques
Knowledgeable on tools and techniques for control loop stability analysis (analog and digital)
Experience implementing digital control loops in embedded C/C++ on resource limited 16/32-bit DSP or microcontroller, and/or VHDL on FPGA or CPLD
Experience developing embedded firmware for power conversion and/or motor controls
Experience developing embedded firmware with critical deterministic timing requirements