| 摘要 |
Container inspection utilizing a linear actuator. A linear actuator shaft is movable such that the shaft end temporarily contacts the container. A feedback parameter resulting from or related to a change of an electrical property of the linear actuator, is detected or determined by a controller, which determines whether the container satisfies pre-determined inspection criteria, e.g., whether the container is properly sealed, satisfies pressure criteria and/or has unacceptable vacuum. These determinations are made based at least in part upon one or more detected feedback parameters including or related to at least one of a change of position of the shaft, a change of velocity of the shaft and a force or torque exerted by the container to the shaft. In this manner, high speed leak detection is performed without a load cell or force transducer, without squeezing or compressing bottles and without determining fill level changes.
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