Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP52104849ApriorityCriticalpatent/JPS6037717B2/en
Publication of JPS5438515ApublicationCriticalpatent/JPS5438515A/en
Publication of JPS6037717B2publicationCriticalpatent/JPS6037717B2/en
PURPOSE: To widen speed control range by increasing current limit of motor in proportion with the increase of duty factor of chopper and bringing the increment of current limit to zero immediately before the chopper is fully conducted.
COPYRIGHT: (C)1979,JPO&Japio
JP52104849A1977-09-021977-09-02
DC motor control device
ExpiredJPS6037717B2
(en)