a programming language that allows compiles to hardware, you should be able to do pretty much any general programming concepts (within limits).
Since you appear to be a bit 'Fuzzy' (pardon my pun on VHDL, try "the Designer's Guide to VHDL, 2nd edition" by Peter J. Ashenden.
The "system designer's guide to VHDL-AMS: .." is more towards mixed analog which is not what you appear to be doing.
While there's an Idiot's guide to Quantum Mechanics, don't think there's one for Fuzzy Logic.
They've been using fuzzy logic in appliances and the like for years. Shouldn't be too hard. How about "a first course on fuzzy logic, 3rd edition", the first of 8,574 books on amazon.com.
books24x7.com has 330 books that refer to fuzzy logic. while a paid site, you can get access to a subset of the content for free thru joining the IEEE (computer.org) or the ACM (acm.org) for about $100/year.
That said, it's still up to you to do your own project.
Edit: Actually I see some very specific titles about using Fuzzy Logic with VHDL in Amazon. Just type in 'vhdl fuzzy logic' and select books.
"fuzzy logic for embedded systems.." ahmad ibrahim
Fussy Logic: Implementation and Applications: M. J. Patyra and Mlynek
and several proceedings of intl workshops on fuzzy logic from 2006 back to 1995
plus applications with analog controllers
That said, don't spend all your money on books. One or two if good and on topic could do. Try finding online first in the IEEE.
I have good luck with buying used books at amazon, often a fraction of the price, and many of the mentioned titles have used copies. The US post office changed the postage rates for booksellers in the US to make it more expensive to ship overseas. But they probably will do so anyway.
