专利名称：Variable frequency power unit controlling
system
发明人：Takata, Nobiharu c/o MITSUBISHI DENKI K.K.
Power
申请号：EP85101510.7申请日：19850213公开号：EP0160787A1公开日：19851113
专利附图：
摘要：A variable frequency power unit controlling system for controlling a variablefrequency power unit to supply an electric current of a frequency corresponding to a
desired revolving rate of an electric motor. A control signal designating the revolvingrate of the electric motor is integrated by an integrating circuit and the output frequencyof the variable frequency power unit is held at a predetermined value regardless of thecontrol signal, when the change rate of the output signal of the integrating circuitdeviates from a predetermined range of change rate.
申请人：MITSUBISHI DENKI KABUSHIKI KAISHA
地址：2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100 JP
国籍：JP
代理机构：Eisenführ, Speiser & Partner
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