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heater.c: Update link to 'PID without a PhD' Tim Wescott 2000 Embedded article.

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David Forrest 2014-05-09 14:31:06 -04:00 committed by Markus Hitter
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commit 9d5d2a5492
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@ -46,7 +46,7 @@ static const heater_definition_t heaters[NUM_HEATERS] =
The three factors kP, kI, kD are chosen to give the desired behaviour given the dynamics of the system. The three factors kP, kI, kD are chosen to give the desired behaviour given the dynamics of the system.
See http://www.eetimes.com/design/embedded/4211211/PID-without-a-PhD for the full story See http://www.embedded.com/design/prototyping-and-development/4211211/PID-without-a-PhD for the full story
*/ */
struct { struct {
int32_t p_factor; ///< scaled P factor: mibicounts/qc int32_t p_factor; ///< scaled P factor: mibicounts/qc