Title:
TARGET POINT SEARCHING METHOD
Document Type and Number:
Japanese Patent JPH03286301
Kind Code:
A
Abstract:
PURPOSE:To prevent the fall into the local pole by sampling an entire searching space and choosing a sampling point coincident with the searching object as the first noted point. CONSTITUTION:The prescribed evaluation value is obtained via each sampling point (black dot) in a searching area 1. Then the sampling point that secures the largest evaluation value is defined as the first noted point (x, y). A rectangular nearby area 6 which spreads by the prescribed distances + or -DELTAx and + or -DELTAy around the point (x, y) is set, and four points (x + DELTAx, y), (x - DELTAx, y), (x, y + DELTAy) and (x, y - DELTAy) are sampled together with each evaluation obtained. Then a fuzzy inference is carried out with use of these evaluation values of the noted point and four sampling points for calculation of the next noted point (x', y'). This procedure is repeated until the chosen position of the noted point is converged. Thus it is possible to prevent the fall into the local pole and to search a target point at a high speed and with high stability.
Inventors:
YAMASHITA TOSHIHIRO
Application Number:
JP8944690A
Publication Date:
December 17, 1991
Filing Date:
April 03, 1990
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G05B13/02; (IPC1-7): G05B13/02
Attorney, Agent or Firm:
Suzuki Yoshimitsu