公开(公告)号：DE3933268A1

公开(公告)日：1990-04-12

申请号：DE3933268

申请日：1989-10-05

Applicant: BASF AG

Inventor： ZIMMERMANN CLIFTON DR ,  LEWIN HELMUT ,  BIEBERICH CLAUS ,  BOCK WALTER

IPC: G01B11/00

Abstract: The measurement head has a pick-up (2) which can be connected with the measurement part and a signal transducer affected by the pick-up. The transducer consists of a light source and receiver and a reflector (4) directed at them. The pick-up is in the form of a part (6) which influences the light intensity between the source and receiver and the reflector. The light is transmitted and received via a light conductor (LWL) with a lens (5) on its end facing the reflector and connected to the light source and signal receiver via an optical deflector. ADVANTAGE - Measurement head is developed to enable higher measurement accuracy to be achieved than with conventional arrangements.

公开(公告)号：DE3900274A1

公开(公告)日：1990-07-12

申请号：DE3900274

申请日：1989-01-07

Applicant: BASF AG

Inventor： ZIMMERMANN CLIFTON DR ,  KUERTEN HERIBERT DR ,  LEWIN HELMUT

IPC: G01D21/00 ,  G01R17/02

Abstract: For ultra-high precision measurements, a control loop which consists of a controlled system (S), a nominal/actual value comparator (V) and a controller (R), is extended in such a manner that, for the purpose of detecting measurement signals, the connection (LWL) carrying the controlled variable between the controller output and the controlled-system input is carried via a measurement value transducer (G). To evaluate and indicate the measurement value, the output of the controller carrying the manipulated variable (Y) is additionally connected to an evaluating circuit (A).

公开(公告)号：DE3832236A1

公开(公告)日：1990-03-29

申请号：DE3832236

申请日：1988-09-22

Applicant: BASF AG

Inventor： ZIMMERMANN CLIFTON DR ,  HOLL NORBERT ,  LEWIN HELMUT ,  WIPPEL JUERGEN

IPC: G01M1/38 ,  B21B37/66 ,  G01M1/30 ,  H02K15/16

公开(公告)号：DE4209630A1

公开(公告)日：1993-09-30

申请号：DE4209630

申请日：1992-03-25

Applicant: BASF AG

Inventor： ZIMMERMANN CLIFTON DR ,  KUERTEN HERIBERT DR

IPC: B23K26/08 ,  B23K26/082 ,  B26F3/02 ,  B65H19/26 ,  B26F3/00 ,  B23K26/14

Abstract: A moving web (1) is severed once it has been wound up to the desired length by means of crack propagation which is based on fracture mechanics and on lines of perforations which are inserted into the web material, which is made brittle by cooling (8), at the point at which it is to be severed by means of a laser apparatus (9-11).

公开(公告)号：DE3915982A1

公开(公告)日：1990-11-22

申请号：DE3915982

申请日：1989-05-17

Applicant: BASF AG

Inventor： ZIMMERMANN CLIFTON DR ,  MUMFORD GLEN

IPC: H01S5/042 ,  H01S5/062

Abstract: In order to generate precisely square-wave laser light pulses, a laser diode is fed by a current pulse generator which comprises a timing pulse generator and a power stage, which is driven by the latter and which is followed by a single-pole driver stage of high current having a rise time of a few nanoseconds for the laser diode which is connected in the circuit of a battery of capacitors.