biquad implementation

sid4u wrote:
> can anybody help me to implement the following transfer function as an
> biquad circuit.
>
>    H(s) =  1.77*10^5*s + 1.58*10^10
>           ---------------------------
>                      s^2
>
>
> thanks in advance.

Sid4u,

I assume you want to convert the second analogue transfer function H(s)
to a discrete second order transfer function

H(z) = (b_0 + b_1 z^-1 + b_2 z^-2)/(1 + a_1 z^-1 + a_2 z^-2).

One common way to do that is by using the bilinear transform, which
replaces s with 2/T (1-z^-1) / (1 + z^-1), where T is the sampling
period. There are other ways, but for your particular transfer
function, bilinear transfrom might work.

Regards,

Andor wrote:
> sid4u wrote:
> 
>>can anybody help me to implement the following transfer function as an
>>biquad circuit.
>>
>>   H(s) =  1.77*10^5*s + 1.58*10^10
>>          ---------------------------
>>                     s^2
>>
>>
>>thanks in advance.
> 
> 
> Sid4u,
> 
> I assume you want to convert the second analogue transfer function H(s)
> to a discrete second order transfer function
> 
> H(z) = (b_0 + b_1 z^-1 + b_2 z^-2)/(1 + a_1 z^-1 + a_2 z^-2).
> 
> One common way to do that is by using the bilinear transform, which
> replaces s with 2/T (1-z^-1) / (1 + z^-1), where T is the sampling
> period. There are other ways, but for your particular transfer
> function, bilinear transfrom might work.

Andor,

You're too late. The assignment is already past due.

Jerry
-- 
Engineering is the art of making what you want from things you can get.
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Richard Owlett wrote:
>
> That problem is not just at college level. I goes all the way down to
> grade school.
>
> I'm working with 14 yro who would be classified as "at risk" even if he
> weren't ADHD with additional learning problems. He received 'social
> promotions' all the way into 7th grade wo being competent to
> add/subtract fractions and lousy reading skills.
>
> Fortunately the middle school he was dumped on sees the problem - I give
> him a 40-60 chance of promotion.
>
> The kid is *NOT* dumb.
>
> While working with him on one problem regarding fractions, I slipped
> into using algebra in my explanation. He 'got it' immediately even
> though he had never had any algebra.
>
> Currently I'm working on reading skills using _The Lion, the Witch, and
> the Wardrobe_ by C.S. Lewis. Now just how much language commonality is
> there between a 21st century Ozark Mountains teen and an early 20th
> century professor of literature at Oxford and Cambridge?
>
> He regularly asks me "why didn't he say 'abc' instead of 'xyz'?
> He's been fascinated by the limited insight into linguistics that I've
> been able to give him.
>
> kid *NOT* dumb
> was *NOT* served by undeserved promotions
>
> And now there are ~!@#%$#@% teacher unions objecting to bonuses for
> teachers who actually teach. AGGRRRHHHH
>
> temp end of rant :)

When I started college, I realized just how much the public school
system had failed me.  It failed me because even though I took the most
advanced classes that they had to offer, including adv chemistry,
physics, and calculus, I was still unprepared for college.  It failed
me in that I was required to spend between 1/2 and 1/3 of my time
taking college courses on language, reading, writing, and speaking on
the basis that they were state requirements due to the number of
applicants who didn't posses these skills to an adequate degree.  It
failed me, even though I lived in one of the wealthiest counties in the
state of Ohio with one of the best school systems with some of the
highest educated and highest paid teachers.

I am of the opinion that American society needs to adopt a much
stricter attitude towards education, much like most of the world has
done.  I believe that the students who demonstrate that they don't want
to be there, spend everyone's time jerking off and acting out should be
put in a desert labor camp and handed a shovel.  I would be willing to
give them a second chance after about six months of hard labor,
regarding wether they wanted to apply themselves at school or not, but
none of this 18+ years of "chances" because they "may" decide to
straighten up at some point.  I also believe that sports needs to be
seperated from academics.  For far too long, the focus in school, both
at the lower and at the college levels has been on the ball teams and
not on the learning.  The sad fact about it is that it is because too
many lazy Americans are willing to pay for the entertainment and as
long as they get it, along with their beer, they don't care about the
education.  George Orwell was right in that the populace is asleep and
as long as they receive enough to be pacified, they will stay asleep.

I believe that the day of doom is coming for the school system in the
United States and when it does come, it will be with a bang.