| 摘要 |
<p>PURPOSE:To provide a truck detector for linear motor conveying system in which the signal of truck can be detected positively. CONSTITUTION:In a linear motor conveying system equipped with a magnetic truck detector, the truck carries a sensor plate 5B alternately arranged with a predetermined number of pole pieces 5a, 5b having same width. Magnetic sensors 5Aa1, 5Aa2, etc., are disposed oppositely at predetermined ground positions on the opposite sides of the sensor plate 5B. Outputs from the sensors 5Aa1, 5Aa2, etc., are added and the truck is detected based on the sum of outputs.</p> |
