NXT programmable brick : 46


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Subject:	Re: NXT Motors -- Speed vs Power Level
Newsgroups:	lugnet.robotics, lugnet.robotics.nxt
Date:	Thu, 3 Aug 2006 07:07:10 GMT
Viewed:	5931 times

I tried to plot power levels vs angular speed (in rad/s) and discovered goooood linearity ( remember how non-linear was RCX PWM)? The PID loop is a great idea, and I suppose that PID parameters should be tweakable. In SDK or HDK ( don't remember well) there are some opcodes that work directly on that PID parameters. Take a look!

Message has 1 Reply:

		RE: NXT Motors -- Speed vs Power Level
(...) I've done the same measurements/plots and found same linearity when 'brake' on inactive PWM cycles is used. Not so good when 'float' is used. This leads to a conundrum that I simply can't explain. If you use 'inactive brake' mode the motors (...) (18 years ago, 3-Aug-06, to lugnet.robotics, lugnet.robotics.nxt)

Message is in Reply To:

		NXT Motors -- Speed vs Power Level
An explanation of when to use and when not to use the new NXT motor speed control option. The RCX supports only a motor power level control where the input is the percentage of time that power should be applied to the motor. The NXT supports not (...) (18 years ago, 30-Jul-06, to lugnet.robotics, lugnet.robotics.nxt)

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