The following image is Atomic Force Microscope. The sample's surface profile image is obtained by scanning a
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The following image is Atomic Force Microscope. The sample's surface profile image is obtained by scanning a sharp tip on the sample surface, while the distance between the tip and sample surface is kept as constant through a PID feed-back control loop. The sample surface image contains three zones A, B, and C, where zone B truly reflects the sample surface topography; while zone C is too flat and zone A is too rough containing large noise.
Write down the PID control algorithm for this scanning imaging instrument. Define the variables in the equation.
Related Book For
University Physics with Modern Physics
ISBN: 978-0133977981
14th edition
Authors: Hugh D. Young, Roger A. Freedman
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