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Re: Implementing Traction Control for an advantage in the 2009 game
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The next problem is motor speed control. Cars usually work at 15 to 30 Hz, due to limits of their mechanical systems. The new Jaguars can adjust their outputs a lot faster than that. The control system can keep up with it, too, but can the motors? Can a PID loop be implemented that gets a new setpoint every 1/60th of a second?
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You might not want to implement a PID loop depending on what you are trying to accomplish with the drive train. Using a ramp instead of a step input is ideally what we want. The problem is that it changes the system type that you need (Read: How many integrators you need) to achieve a specific amount of steady state error.. I actually have to go over the dynamics of a basic gear train (Read: How many integrators you start out with) but the worst case scenario is that you have to integrate at least once to get a system that doesn't give an steady state error that blows off to infinity and twice to get zero steady state error.
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If either a public officer or any one else saw a person attempting to cross a bridge which had been ascertained to be unsafe, and there were no time to warn him of his danger, they might seize him and turn him back without any real infringement of his liberty; for liberty consists in doing what one desires, and he does not desire to fall into the river. -Mill
Last edited by Adam Y. : 04-01-2009 at 16:43.
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