Hi, I am learning PLL from a tutoril. It says the zero has the character, see below. The zero has the transfer function value 0, but I cannot arrive the conclusion below. Could you explain it to me more? Thanks in advance. ..................... The �Zero� in the numerator of the closed-loop transfer function is the frequency in radians/s where the gain of the integral and proportional paths are equal.
How to understand the zero of PLL with integral and proportional path
Started by ●November 14, 2011
Reply by ●November 14, 20112011-11-14
fl wrote:> Hi, > I am learning PLL from a tutoril.Don't learn anything from tutorials.> It says the zero has the character, > see below. The zero has the transfer function value 0, but I cannot > arrive the conclusion below. Could you explain it to me more? Thanks > in advance. > > > > > ...................... > The �Zero� in the numerator of the closed-loop > transfer function is the frequency in radians/s > where the gain of the integral and proportional > paths are equal.
Reply by ●November 14, 20112011-11-14
On Nov 14, 9:39�am, Vladimir Vassilevsky <nos...@nowhere.com> wrote:> fl wrote: > > Hi, > > I am learning PLL from a tutoril. > > Don't learn anything from tutorials.> > > > > It says the zero has the character, > > see below. The zero has the transfer function value 0, but I cannot > > arrive the conclusion below. Could you explain it to me more? Thanks > > in advance. > > > ...................... > > The �Zero� in the numerator of the closed-loop > > transfer function is the frequency in radians/s > > where the gain of the integral and proportional > > paths are equal.
Reply by ●November 14, 20112011-11-14
On Mon, 14 Nov 2011 04:50:56 -0800, fl wrote:> Hi, > I am learning PLL from a tutoril. It says the zero has the character, > see below. The zero has the transfer function value 0, but I cannot > arrive the conclusion below. Could you explain it to me more? Thanks in > advance. > > ..................... > The “Zero” in the numerator of the closed-loop transfer function is the > frequency in radians/s where the gain of the integral and proportional > paths are equal.Perhaps you need a better tutorial? If you understand how to do math in the Laplace domain, then the above statement should just fall out. If you don't understand how to do math in the Laplace domain -- find out. -- www.wescottdesign.com