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Ott 2, 2022
La Meccanica
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Several refined defects regarding the first PID theory have been discovered over the last half a century of actual-existence applications

Several refined defects regarding the first PID theory have been discovered over the last half a century of actual-existence applications

Knowledgeable PID pages usually observe that nothing of talk very much enforce right to the economical PID controllers already powering so much more than simply 90% of their commercial processes.

Think, including, the consequences of actuator saturation . This happens if output rule from this new control is higher than the power of actuator. Regarding cruise manage analogy over, the new PID algorithm may at some point require a million sixteen lbf-base torque to-be used on the latest drive shaft. Mathematically, no less than, that much push may be needed to get to an exceptionally rapid speed.

Needless to say real engines can just only apply a part of one to push, and so the real aftereffects of the fresh controller’s output could well be limited in order to long lasting engine perform at the full throttle. New immediate result is a speeds from acceleration lower than asked since the motor is actually “saturated” within the restriction capabilities.

Yet not, it’s the a lot of time-name effects from actuator saturation which have necessitated an answer to own formula also known as antiwindup shelter . Continue reading »

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