摘要:AbstractIn injection molding, it is crucial to ensure high part quality over a long time period because typically these parts are produced in large numbers. Process variations influence the production and the resulting part quality. The part mass is frequently used as a quality measure as it can be easily measured by a scale after the part is finished. On the other hand, it is not possible to directly measure the part mass during the injection phase. This paper proposes a method to estimate the part mass by means of sensors, which are typically available in an injection molding machine. Compared to the state of the art, the proposed strategy also allows to estimate the time evolution of the part mass during the injection process. The accuracy of 0.25% and the robustness, with respect to process parameter variations, of the proposed part mass estimation is demonstrated by measurements.
关键词:Keywordsinjection moldingpart mass estimationprocess controlpart qualitypartial filling