Bode/Nyquist plot.....

10102015, 10:25 PM
Post: #35




RE: Bode/Nyquist plot.....
(05162015 10:53 AM)alexzkter Wrote: Hi again, I didn't know f1 and f2 was the frequency range (rad/s). You typing [1,1] and [2,2] on some examples confused me since negative frequencies don't exist. I haven't studied the graph, but some physicists argue that negative frequencies exist, much like negative distances or displacements. Consider for example a clock, with a second hand rotating clockwise. Apply a negative rotational force  the frequency that the second hands sweeps clockwise will reduce and eventually reach 0. continue to apply the force. The second hand will begin to sweep anticlockwise at a positive frequency  or clockwise at a negative frequency, if you like. Just like walking 5m North really. Though perhaps it could be called something else, like we distinguish 5m distant (positive) from 5m North (signed). Stephen Lewkowicz (G1CMZ) https://my.numworks.com/python/steveg1cmz 

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