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    • 9. 发明申请
    • Dispensing system and method of controlling the same
    • 分配系统及其控制方法
    • US20050048195A1
    • 2005-03-03
    • US10649977
    • 2003-08-26
    • Akihiro YanagitaRaymond GuzowskiKishore LankalapalliKarl WirthDavid Bruce
    • Akihiro YanagitaRaymond GuzowskiKishore LankalapalliKarl WirthDavid Bruce
    • B05B12/08B05C11/00B05C11/10B05D1/00
    • B05B12/085B05C11/1013
    • A method of controlling a dispensing system (14) to dispense a viscous material (10) onto a workpiece (12) at an actual dispensing rate within a minimum deviation of a target dispensing rate is provided. The method includes dispensing the viscous material (10) onto the workpiece (12) during first (T1) and second (T2) time periods and measuring a pressure of the viscous material (10) after each of a plurality of time increments (ti) within the time periods (T1,T2). A theoretical volume of the viscous material (10) dispensed during each of the time periods (T1,T2) is determined based on the pressure measurements (P). An actual volume of the viscous material (10) dispensed during the first (T1) and second (T2) time periods is also measured. The theoretical and actual volumes are then compared to determine first (f1) and second (f2) new values for a compensation factor (f). The first (T1) and second (T2) time periods are consecutive such that the first new value (f1) for the compensation factor (f) compensates the actual dispensing rate in the second time period (T2) for changes in operational characteristics of the viscous material (10) and the dispensing system (14) that occurred in the first time period (T1).
    • 提供了一种控制分配系统(14)以在目标分配速率的最小偏差内以实际分配速率将粘性材料(10)分配到工件(12)上的方法。 该方法包括在第一(T1)和第二(T2)时间段期间将粘性材料(10)分配到工件(12)上,并且在多个时间增量(ti)中的每一个之后测量粘性材料(10)的压力, 在时间段(T1,T2)内。 基于压力测量(P)确定在每个时间段(T1,T2)期间分配的粘性材料(10)的理论体积。 还测量在第一(T1)和第二(T2)时间段期间分配的粘性材料(10)的实际体积。 然后将理论和实际体积进行比较,以确定补偿因子(f)的第一(f1)和第二(f2)新值。 第一(T1)和第二(T2)时间段是连续的,使得补偿因子(f)的第一新值(f1)补偿第二时间段(T2)中的实际分配速率,用于改变 粘性材料(10)和在第一时间段(T1)中发生的分配系统(14)。