so you see in terms of td and M and the value of the value of TI should be given in terms of td, this is what Ziegler Nichols found works well, now obviously it will not work well everywhere, so various people will say various, so we have various other kinds of rules also for example we can have a, we can have another rule which is known as the cohen- coon rule. Which looks like this, so, you see that there they are actually fairly is fairly close only thing is that Ziegler Nichols said that KP should be this much now Cohan and Coon actually adding another term, so here also you see that in case of he is adding apart from this td he is adding a factor here right, so you see that various kinds of empirical rules are given and then you can apply, so actually what happens one must realize this, that one must realize this that actually what is going to happen is that say.
അതിനാൽ നമുക്ക് മറ്റ് പലതരം നിയമങ്ങളും ഉണ്ട്. ഉദാഹരണത്തിന്, കോഹൻ-കൂൺ റൂൾ എന്നറിയപ്പെടുന്ന മറ്റൊരു റൂൾ നമുക്ക് ഇതുപോലെ കാണാനാകും. സീഗ്ലർ നിക്കോൾസ് പറഞ്ഞ ഒരേയൊരു കാര്യം Kp കെപി ഇത്രയും ആയിരിക്കണം എന്നതാണ്. ഇപ്പോൾ കോഹനും കൂനും യഥാർത്ഥത്തിൽ മറ്റൊരു പദം ചേർക്കുന്നു.