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Ramp Section of a DC drive....
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This section of the
electronics in a dc drive makes it possible to accelerate and decelerate the
dc motor as per desired acceleration and deceleration rates. Two adjustments
called Ramp UP and Ramp Down times are normally made avaialbe to the user.
Typically values from zero to 120 seconds are possible. The circuit is
normally based around two operational amplifiers and capacitors to achieve
the function. Shown above is a typical ramp circuit found in analog dc
drives. |
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Speed control not satisfactory
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