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#1
March 9th 05, 01:02 PM
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Rich Grise wrote:
It could very well be intentional - I once worked with a servo system where they intentionally superimposed a triangle wave on the control V - they called it "dither". It kept the hydraulic actuator from sticking in place, so it could move smoothly. Dither lets it respond more quickly. It's a common mechanical actuator trick. 
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