公开(公告)号：US3767923A

公开(公告)日：1973-10-23

申请号：US3767923D

申请日：1972-03-29

Applicant: STEWART WARNER CORP

Inventor： BARDWELL F

IPC: G01B11/00 ,  B23Q35/128 ,  G01D5/26 ,  G05D3/00 ,  G05D1/00

CPC classification number: B23Q35/128

Abstract: Line or pattern edge contour tracing apparatus incorporating a triangularly shaped pair of photocells receiving either direct or pulsating light from the line or edge to be traced. The triangularly shaped photocell pair carried by a sensing head are arranged in overlapping positions across the line or edge to be traced and across the direction of sensing head movement to enable the entire area of each cell to be used in sensing line displacement or orientation. Providing successive pairs of triangularly shaped photocells arranged across the line or direction of travel and in circuits for combining their outputs provides resultant signals indicative of the deviation of the sensing head from the line or edge being traced with the output of the cells selected and combined dependent on whether an edge or line is traced and the tracing speed for controlling servo motors to drive the sensing head along the line or edge. In addition the output of selected cells are controlled to ensure the sensing head properly orients to the line when tracing at slow speed.

Abstract translation: 线或图案边缘轮廓跟踪装置，其包含三角形对的光电池，其接收来自要跟踪的线或边缘的直接或脉动光。 由感测头携带的三角形光电池对被布置在跨越要跟踪的线或边缘的重叠位置，并且跨越感测头移动的方向，以使得每个单元的整个区域能够用于感测线位移或取向。 提供跨越行程的行或行进方向并且在用于组合它们的输出的电路中的连续成对的三角形光电管，提供指示感测头与线或边缘的偏离的结果信号，所述信号被选择和组合的依赖 跟踪边缘或线路以及控制伺服电机沿线或边缘驱动感测头的跟踪速度。 此外，选择的单元的输出被控制以确保在慢速跟踪时感测头正确定位到线路。