Title:
POSITION CONTROLLER
Document Type and Number:
Japanese Patent JPS60189517
Kind Code:
A
Abstract:
PURPOSE:To ensure the automatic positioning at a high speed and with high accuracy with a position controller by catching an object to be detected through an image pickup device and setting the center position of said object so as to coincide with a prescribed position of the image pickup device. CONSTITUTION:A mark 11 is picked up by a TV camera 12 and this image pickup signal is sent to a position controller 13. The controller 13 binary codes the image pickup signal. The data on this binary coded signal is decomposed into an orthogonal coordinate system by means of horizontal and vertical synchronizing signals which are sent to a TV camera. Thus position coordinates are obtained for corner parts P1-P4 of the mark 11. Based on these position coordinates, the coordinates are calculated for the center C of the mark 11. Then the difference is calculated between the coordinates of the center C and a standard center D. The result of said calculation is decomposed into X and Y directions and sent to a positioning mechanism 10 in the form of the variance data. In such a way the accurate positioning with a position controller is ensured.
Inventors:
NAITOU AKIRA
KODAMA TETSUJI
TSURUSE HIDENORI
TSUTSUMI HIRONOBU
KODAMA TETSUJI
TSURUSE HIDENORI
TSUTSUMI HIRONOBU
Application Number:
JP4500984A
Publication Date:
September 27, 1985
Filing Date:
March 09, 1984
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01B11/00; G01B21/00; G05B19/402; G05D3/12; (IPC1-7): G01B11/00; G01B21/00; G05D3/12
Attorney, Agent or Firm:
Masuo Oiwa