P R E F A C E
In connection with the Third International Measurement Conference IMEKO III and the Sixth International Instruments & Measurements Conference I & M VI in Stockholm 17th—18th September 1964, the Swedish organization Instruments
& Measurements Conference arranged a special Section on Automatic Control (I&M-AC).
The Section, sponsored by the Royal Swedish Academy of Engineering Sciences, included fifteen papers by authors from six countries which have been compiled into the present edition. (The Transactions from I & M VI — IMEKO III are published as Acta IMEKO, vol. 1—4, Budapest 62, P. Ο. B. 149, Hungary.)
Mr Torgny Schiitt, civ.ing., acted as Secretary to the Special Section on Automa
tic Control, chairman of which was professor Birger Qvarnstrom. The Proceedings are edited by Mrs Vera Runnstrôm-Reio.
Gregory Ljungberg Birger Qvarnstrom
C h a i r m a n of t h e S w e d i s h O r g a n i s a t i o n C o m m i t t e e D e p u t y D i r e c t o r of t h e R o y a l S w e d i s h A c a d e m y of E n g i n e e r i n g Science s
C h a i r m a n of t h e S e c t i o n P r o f e s s o r of C h a l m e r s U n i v e r s i t y of T e c h n o l o g y