Abstract: An apparatus for feeding substantially equally weighted groups of articles to a packaging apparatus in a timed continuous sequence. The articles are initially fed individually to a plurality of hoppers, each of which has means to weigh the articles therein. Further feeding of articles to any given hopper is blocked or discontinued when a predetermined weight of the articles has been reached in the particular hopper. A conveyor having a plurality of containers passes beneath the hoppers to receive the articles therefrom as they are dumped from the hoppers. The dumping of the articles from the hopper is controlled with the movement of the containers beneath the hoppers so that each hopper dumps the articles only in empty containers. The control means prevents more than one group of articles from being dumped into any given container on the conveyor and ensures that each container on the conveyor is filled so that the packaging operation has a continuous supply of the groups of articles.

Abstract: A controller for a variable air volume terminal of a variable air volume air conditioning system which comprises a temperature sensing circuitry for generating a temperature process value, a setpoint determining circuitry for establishing a temperature setpoint, an airflow signal circuitry for generating an airflow setpoint in response to the temperature process value and the temperature setpoint. A flow sensing circuitry for generating a flow process value in response to a predetermined set of flow sensing inputs and damper control circuitry for generating a damper motor operation signal to control the damper motor in response to the flow process value and the airflow setpoint. The damper control circuitry comprises a fuzzy logic control mechanism for implementing a set of fuzzy logic rule-based instructions in generating the damper motor operating signal.