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Position Sensor A II

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Author: s_noonan

Group: Technical

Filesize: 135.56 kB

Date added: 2014-04-13

Rating: 5

Downloads: 1134

Views: 457

Comments: 3

Ratings: 1

Times favored: 0

Made with: Algodoo v2.1.0

Tags:
electronics

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Less code (60% reduction), less oscillation, worse accuracy.

This is a little more difficult than feedback where the signal is proportional to the distance. In this case we are targeting for a local maximum. The approach used here also addresses the case where the object moves (although you would need to delete "app.gui.playmode = sim.running" in the sensor target to try it) which is a little tricky because the sensor can't determine which way the object is moving.
Last edited at 2016/07/02 20:37:29 by s_noonan
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This scene is a response to:
Title Author Rating Downloads Comments Date added
Position Sensor A s_noonan 5 (1 vote) 719 4 2013/12/13 23:14:12
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Xray
2014/04/13 17:52:03
Nice "tight" control.:tup: Did you use PID algorithm for the position control?
s_noonan
2014/04/14 01:43:27
No, just P. I'm not sure how to do "I" in this case. If I did, then maybe I could reduce the error.
Xray
2014/04/14 02:20:03
I'm sure that you already know that "I' would reduce the error between the position setpoint and the measured position during steady-state conditions. It integrates the error over a preset time period, and continuously nudges the load being moved until the error is zero. "I" is only needed in applications where extreme position accuracy is required during steady-state conditions (no accel or decel). The bottom line is, if you don't need "I" then you are better off without it.