Bryan Principle
In linear measurement device, sensing axis needs working with moving axis coaxially, otherwise it would be madeerrors. Bryan Principle is amore general Abb’s principle that travel for the station of displacement measuring system should be in a line with the travel of the measurement. Once error appear, taking actions to make displacement track out of angular motion, or calculate the angular motion displacement, and compensate by compensation mechanism, otherwise The Bryan Principle may be violated by it. And it inevitably makes errors.
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