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  • Users: mgeerts
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  1. mgeerts

    Image shape analysis

    First up, I'm sorry that I am posting in this forum. There isn't one that specifically fits this question, but I figured that there would be experts here that could point me in the right direction. I'm looking for a method of shape detection in low-resolution silhouette images. Unfortunately...
  2. mgeerts

    low-speed quadrature algorithm

    Hello all, I am using a quadrature sensor on a motor-driven piece of farm equipment that spins at a wide range of speeds under normal use (uses a hydraulic CVT). The quadrature signal may be in the low kHz range down to a complete stop or 0.5Hz. At present I am using two speed algorithms. One...
  3. mgeerts

    PID tuning question for throttle actuator

    I have a DC motor attached to the throttle of a continuously variable transmission fed by an engine that always runs at the same speed. I measure the output speed and compare to the set speed. I use the difference as the error in a PID system that has an output of the PWM duty cycle going to...
  4. mgeerts

    Agile development and embedded systems

    I work for a company that produces custom hardware/firmware solutions for customers in ANY industry. One day i may be working on a plasma cutter, another day a hospital bed, another day farm equipment. I constantly find that our projects run into the same problems: -We didn't understand the...
  5. mgeerts

    PID throttle/speed control

    Background: I am currently writing control firmware for a machine that is powered by a honda engine through a hydrostatic transmission. The transmissions is infinitely variable and has a throttle control on it (the motor has no throttle control, it just runs at 3krpm). Attached to the throttle...

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