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专利名称：Method and a device for controlling the
operation of an actuator unit
发明人：Jörgen Andersson,Örjan
Christoffersson,Anders Helmner,KennethNilsson
申请号：US096049申请日：20000918公开号：US007522B1公开日：20020618
专利附图：
摘要：The invention concerns a method for controlling the operation of an actuatorunit, comprising the steps: a) repeatedly reading the current fed to the actuator unit, b) afirst comparison wherein the readings are compared with a first maximum level and if thereadings are above the maximum level the electrical power fed to the actuator unit is cutoff, c) a second comparison wherein two successive readings repeatedly are comparedwith each other and if the differences between the readings are below a first ramp level a
number a steady state condition for the current fed to the actuator unit is detected, andd) if steady state is detected setting at least one overload detection limit on basis of asteady state reading of the current fed to the actuator unit. The invention also concerns adevice for carrying out the method and a conveyor incorporating the device.
申请人：TELAIR INTERNATIONAL AB
代理机构：Burns, Doane, Swecker & Mathis, LLP
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