CHEN 4601 Lecture Notes - Lecture 36: Tral, Pid Controller
1 Nov 2015
School
Department
Course
Professor
Document Summary
Today: summary of p, i, d effect, additional considerations related to pid control, guidelines for choosing p, pi, or pid. No recitations next week: first order system, control: as kc goes up if kcl < 1 --> kcl -->appraoches 1 if tau cl < tau taucl will decrease. If kc increases or tau_i goes down tauprime and zeta decreases) (as kc goes up or taui goes down, overdamped --> underdamped) closed loop gain = 1 --> offset = 0. As i increase integral action (kc increase and taui decrease): system is more responsive and osillatory. 1st order but w/ a zero at 0! -> system is slower static gain = 0! Never used alone --> used to make the response slower. I eliminates offset, d action doesn"t let the system become too oscilatory or unstable => this allows higher gain for faster response.
