Hi, I'm designing a controller for a boost converter. I'm able to find a set of gains that fit for all situations, but I get a slow response at...

Hi, I'm designing a controller for a boost converter. I'm able to find a set of gains that fit for all situations, but I get a slow response at full-load. I was thinking instead of using gain scheduling, 1 set of gains for little to no load and 1 set of gain when load is significant (say more than 25% of the maximum load). Now my question. What are the gotchas about gain scheduling? In bo...

I can across a really old Fortran program with a subroutine that interpolates a 1D array of N samples to 3N samples. It uses a 5-point operator,...

I can across a really old Fortran program with a subroutine that interpolates a 1D array of N samples to 3N samples. It uses a 5-point operator, and the comments describe it as Bracewell method, spline approximation to sinc. I haven't seen this before. Bracewell's 1995 book on Two-Dimensional Imaging had a formula for 6 nearest points. Did he publish a formula for 1D interpolation with 5 po...

Microsoft is the question the answer is no!

Microsoft is the question the answer is no!

I just updated the Microsoft Word and PDF versions of my CV on my home page to reflect the fact that I got a Ph.D. at the end of May and to list...

I just updated the Microsoft Word and PDF versions of my CV on my home page to reflect the fact that I got a Ph.D. at the end of May and to list five new papers, but haven't yet updated the HTML version so I just deleted that for now. The direct link for the PDF version is http://www.nfld.com/~dalton/dalton-cv-web-2019.pdf Constructive criticism is welcome. Also I have put my Ph.D...

Some articles in the pop-science press appeared this week on the topic; so I traced down a paper by the researchers. Interestingly, I heard a...

Some articles in the pop-science press appeared this week on the topic; so I traced down a paper by the researchers. Interestingly, I heard a similar idea floated in the 1990's, but apparently nothing was published at the time. https://arxiv.org/abs/1411.7041 Steve

Yes I understand the theory, left handed and right-handed sequences. we can= have two z transfer functions the same but one is left hand sided...

Yes I understand the theory, left handed and right-handed sequences. we can= have two z transfer functions the same but one is left hand sided and the = other right. A great deal is spent explaining this but exactly what is the use in the fi= rst place of left-handed sequences as they are non-causal. I see in countle= ss book examples of sequences going backwards in time - find the z-transfe...

Greetings. I have been using neural networks and other machine learning tools for sometime time. Yesterday the following question popped up in...

Greetings. I have been using neural networks and other machine learning tools for sometime time. Yesterday the following question popped up in my mind however: Why do we use machine learning tools when we could achive similar results with plain interpolation? Let's assume a noise free regression scenario (not classification and no measurement errors). In the case of infinite samples and...

Hello comp.dsp, I don't know if this is common knowledge, but, out-of-the-blue, I received an email from Trine-Lise Allnore, Rune's sister, on...

Hello comp.dsp, I don't know if this is common knowledge, but, out-of-the-blue, I received an email from Trine-Lise Allnore, Rune's sister, on 17-Nov-2018 which I quote below. Hi. I saw your question about my brother Rune, at a forum on the net. You postet It about 4-5 years ago, so you may not remember it.. Well, he comitted suicide in January 2012. You and another member of the ...

I know very few about communication protocols If I am to put my ideas practically, what hardware and software shall one need to create a small...

I know very few about communication protocols If I am to put my ideas practically, what hardware and software shall one need to create a small communication system. I am completely new to this. My wish is that I create a small communication system and transfer data.

I realise DSP engineers don't celebrate Xmas so I feel warranted in asking a question at this time of year. A quad-detector connected to say the...

I realise DSP engineers don't celebrate Xmas so I feel warranted in asking a question at this time of year. A quad-detector connected to say the shaft of a motor gives out pulses and senses direction. So it effectively gives out + or -1 which we count in the main loop which must execute at say within Ts seconds. Suppose there are thousands of pulses per revolution and my understand