(19)
(11)
EP 0 045 761 A1
(12)
(43)
Date of publication:
17.02.1982
Bulletin 1982/07
(21)
Application number:
81900434.0
(22)
Date of filing:
16.02.1981
(51)
International Patent Classification (IPC):
G05B
19/
23
( . )
G05B
19/
414
( . )
(86)
International application number:
PCT/GB1981/000021
(87)
International publication number:
WO 1981/002347
(
20.08.1981
Gazette 1981/20)
(84)
Designated Contracting States:
CH DE FR LI SE
(30)
Priority:
14.02.1980
GB 19800005019
(71)
Applicant:
ZEUS INTERNATIONAL TRADING CO. LIMITED
Hitchin, Hertfordshire SG5 1AS (GB)
(72)
Inventors:
BILLINGSLEY, John
Southsea, Hampshire (GB)
SINGH, Harjit
Portsmouth, Hampshire (GB)
(74)
Representative:
Thomson, Roger Bruce, et al
W.P. THOMPSON & CO. Celcon House 289-293 High Holborn
London WC1V 7HU
London WC1V 7HU (GB)
(54)
POSITION CONTROL METHODS AND SYSTEMS