Thursday, August 7, 2014

Upgrading GNU Emacs 24.3.1 org-mode 7.9.3f to the latest version on Windows

All the young dudes,

as of today the current pre-built release of GNU Emacs is 24.3.1

...which has a pretty old version of org-mode (which can't export to latex beamer-->BARF!)

There is some documentation on upgrading org-mode at, but what you need to know is this:

1. Close all Emacs windows

2. Open a fresh Emacs

3. M-x package-install RET org

4. M-x package-initialize

5. Verify installation with M-x info, and click on org-mode

...and you're done! I now have version 8.2.7c and can M-x package-initialize l p til the cows come home!


Wednesday, May 7, 2014

The german "Betragsoptimum" is apparently called "modulus optimum" in english

In my German courses on electrical drives, they taught us that the Betragsoptimum method for tuning a control loop, where the controlled system has one "dominant" time constant (higher or larger than all others), which is compensated/cancelled directly by the controller.

Though difficult to find on the Google WORLDWIDE-INTERNET-WEB®, this seems to be called modulus optimum (or, perhaps also "absolute value optimum").

English Sources:

Bajracharya, Molinas, Suul, Undeland, "Understanding of tuning techniques of converter controllers for VSC-HVDC", NORPIE 2008
German Sources: