Question

Describe the process of self-tuning and state the differences with manual tuning.

Answer 1

Ans: Process of self- tuning - Self - tuning systems are typically composed of 4 components expectations, measurement, analysis and actions. The expectations describe how the system should behave given exogenous conditions . Measurements gather data about the conditions and behaviour > Analysis Belfs determaine whether the expectations are being met and which subsequent actions should be performed ex Actions are Gathering gathering in more data and performing dynamic reconfiguration tion of of the system. the system. Self- tuning systems of automatic control are systems whereby adaptation to randomly changing conditions is performed by means of automatically changing Parameters In any non self tuning automatic control system there are Parameters which have an influence on system stability and control quality and which can be turned. ff these Parameters remain constant while operating conditions are substantially varying, control can degrade or even become Unstable. self - tuning systems can be with or without Parameter determination, Y

Differences tuning self-tuning uning, the boles soltan tuming and more - 1 In Manual tuning self - tuning the Dan Manual tuning the Parameters of PID values l'operator varies has to automatically wort I PID values mana feedback values and it . takes several hours to be taking the response in stable at Set Point 1 nichols method self turning takes more (2) Manual duning time to be in stable , hall d the time at the set - Point rator has to give the values manually by graph as per Leigter- a takes be set in stable at Point compared the to 3 set all auto tuning In self-turing the loop |3) Manual tuning (PID, PIED) mie tuned with help of s/w, only the by no the gains manually. pressing autotune the autor button of the 1 the S/W s/w.. Programmer tune the automatically gain.