Title:
【発明の名称】位置決めシステムを校正する方法および装置
Document Type and Number:
Japanese Patent JPS61501057
Kind Code:
A
Abstract:
PCT No. PCT/SE85/00021 Sec. 371 Date Aug. 30, 1985 Sec. 102(e) Date Aug. 30, 1985 PCT Filed Jan. 18, 1985 PCT Pub. No. WO85/03368 PCT Pub. Date Aug. 1, 1985.The invention relates to a method and an apparatus for calibrating a positioning system including a control computer (1405) for producing command value signals to a positioning apparatus which positions an object against a work surface. Sensors (1406,1407) detect the location of the positioning system and convert it to an actual value signal which can be fed back to the control computer. A calibration plane (601) placed on the work surface contains a number of calibration points (602,603), the command value positions of which are entered into the control computer. The positions of at least some calibration points are sensed by a calibration probe (605) corresponding to the object and the actual values for the positions of said points are compared with the command values for the positions of these points on the work surface entered into the control computer. The differences obtained between the actual values and the command values for the positions of the calibration points are stored in the control computer and are used for compensation of the errors of the positioning system by interpolation. The calibration plane preferably consists of a calibration board of electrically insulating material and the calibration probe is an electrically conducting component, the center of which is placed on the calibration board straight above a point, the position of which corresponds to the command value for a calibration point entered into the control unit. The position of the center of the component in one coordinate direction in relation to the calibration point is determined by placing the component in two extreme positions located in the coordinate directions on either side of the calibration point, in which positions the component electrically connects test areas on the calibration board, said areas being connected to detector means and being electrically conducting, whereafter the detected actual value of the position of the calibration point is compared with the command value, entered into the control unit, and any difference that may occur is entered into the control unit as a correction.
Inventors:
Stridsberg, Rennert
Gunner, Rodin
Gunner, Rodin
Application Number:
JP50045185A
Publication Date:
May 22, 1986
Filing Date:
January 18, 1985
Export Citation:
Assignee:
Maid Tao-Tome-Chyon Acti-Volag
International Classes:
G05B19/18; G05B19/401; G05B19/404; B25J9/16; G05D3/12; (IPC1-7): B25J9/16; G05B19/18; G05D3/12
Attorney, Agent or Firm:
Hideto Asamura