Designing Control Systems for a Digital Printing Kiosk

A cross-functional systems approach improves quality and reliability

Systems Engineering Process

Systems Engineering Process

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Highlights

  • Electromechanical and thermal modeling and simulation of closed loop control systems
  • Conversion of model to control code for HIL testing
  • Mechanical design of dancer
  • Conversion of control code to target
  • Electrical Tension Control System via Analog Devices Blackfin and LabVIEW Embedded
  • Electrical control of heat via HC08 microcontroller
  • NI LabVIEW-based test system
  • Utilized SolidWorks, PDM Works, MATLAB/Simulink, MathCAD, LabVIEW, ANSI C

Embedded Systems Integrators

Summary
By incorporating a systems approach to engineering that included modeling, testing and prototype development, Boston Engineering developed time- and cost-saving design options in thermal management, web control and air quality management for a digital imaging kiosk. As a result, image printing was more predictable, more reliable and higher quality at an imaging output speed ten times faster than similar devices on the market.

Challenge
The client (name confidential) offers self-service imaging kiosks that allow customers to instantly print images from a digital camera . le. They asked Boston Engineering to develop thermal, air and tension management systems that could produce higher quality images at a faster rate to utilize an innovative new printing process.

Solution
Boston Engineering developed systems to improve the control, stability, and speed in the air, thermal and web sections of the device. The process included modeling and designing both the mechanical and control solutions, and implementing the systems with hooks for testability. Designs were delivered to address web handling, web tension control, thermal control, air management, system packaging, thermal controls modeling, Value Engineering, Reliability Engineering (FMEA), DFM and general CAD database management, and utilization training. The web handling design incorporated an on-board dancer system that uses a sixth order control algorithm implemented with a high-precision DSP to control web tension, a tighter thermal control loop and a HEPA quality air management system to filter out dust and dirt.