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Why was Analysis and design of feedback control systems is a matter of serious concern with dynamic performance?

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  • qrk
    Lv 7
    2 months ago

    It is still necessary and it minimizes the chance of killing/injuring someone or destroying equipment. Of course, there are many systems where instability won't hurt somebody.

    Some things I've been around where loop stability was an issue:

    A barge-mounted motion compensating deck crane's feedback system wasn't adjusted right. It almost sank the barge it was mounted on when it went in to a wild oscillation when first turned on. Just think of a 500kg crane going crazy.

    Bad feedback parameters for a 30 kG electromagnet controller sent the system in to oscillation when first turned on. Fortunately, it didn't tear the mass spectrometer apart.

    Auto-pilot for a ship wasn't adjusted properly. Ship's course was a sinusoid when it was supposed to travel in a straight line. Adjusting feedback parameters corrected this issue.

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  • 2 months ago

    Is it no longer?  Usually it was and is important if you want an output to follow an input.

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