Curve follower
AssigneeErwin Sick GmbH Optik-Elektronik
InventorsAurel Schlick, Heinz Schreyer
Life of this patent
Estimating the term…
Abstract
A curve tracer comprising: an optical tracer head for scanning a line having at least a substantial transverse component and at least one marking on the line, with a predetermined scanning speed. The head is moved along the line at a speed substantially lower than the scanning speed. There is a control unit for controlling the movement including an integrator, means for feeding the integrator with a voltage proportional to the speed of the tracer head, and means for supplying a signal proportional to the distance travelled by the tracer head when the head moves over the marking.
Claims20
A curve tracer comprising:
- an optical tracer head for scanning a line having at least a substantial transverse component and at least one marking on the line, with a predetermined scanning speed, means for moving said head along said line at a speed substantially lower than said scanning speed, and a control unit comprising an integrator, means connected to said integrator for feeding said integrator with a voltage proportional to the speed of said tracer head, and means connected to said control unit for supplying a signal proportional to the distance travelled by said tracer head when said head moves over said marking.
Dependencies are inferred from the claim text.