SIGNAL PROCESSING MEANS FOR IDENTIFYING SYSTEMS SUBJECT TO PERIODIC DISTURBANCES - Patent 0440720

(19)

(11)

EP 0 440 720 A1

(12)

(43)	Date of publication:
	14.08.1991 Bulletin 1991/33

(21)	Application number: 89912277.0

(22)	Date of filing: 20.10.1989

(51)

International Patent Classification (IPC):

G05B 13/ 04^{( . )}

G05B 21/ 02^{( . )}

(86)	International application number:
	PCT/GB1989/001258

(87)	International publication number:
	WO 1990/004820 (03.05.1990 Gazette 1990/10)

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

(30)

Priority:

26.10.1988 GB 19880025074

(71)	Applicant: TOPEXPRESS LIMITED
	Cambridge CB3 0RD (GB)

(72)	Inventors:
	EATWELL, Graham, Paul Cambridge CB3 7NZ (GB) ROSS, Colin, Fraser Stapleford Cambridge CB2 5BP (GB)

(74)	Representative: Nash, Keith Wilfrid
	KEITH W. NASH & Co. Pearl Assurance House 90-92 Regent Street Cambridge CB2 1DP Cambridge CB2 1DP (GB)

(54)	SIGNAL PROCESSING MEANS FOR IDENTIFYING SYSTEMS SUBJECT TO PERIODIC DISTURBANCES