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JPS54132949A - Speed controller for dc elevator - Google Patents

Speed controller for dc elevator

Info

Publication number
JPS54132949A
JPS54132949A JP3920778A JP3920778A JPS54132949A JP S54132949 A JPS54132949 A JP S54132949A JP 3920778 A JP3920778 A JP 3920778A JP 3920778 A JP3920778 A JP 3920778A JP S54132949 A JPS54132949 A JP S54132949A
Authority
JP
Japan
Prior art keywords
acceleration
armature current
output
reduce
speed
Prior art date
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.)
Pending
Application number
JP3920778A
Other languages
Japanese (ja)
Inventor
Takeyoshi Ando
Kiyoya Shima
Toshiaki Kurosawa
Hiromi Inaba
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 Ltd filed Critical Hitachi Ltd
Priority to JP3920778A priority Critical patent/JPS54132949A/en
Publication of JPS54132949A publication Critical patent/JPS54132949A/en
Pending legal-status Critical Current

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  • Elevator Control (AREA)

Abstract

PURPOSE: To improve the speed control characteristics and reduce the size of a speed controller, by detecting the time of change in the acceleration or deceleration of an elevator and controlling an armature current.
CONSTITUTION: An acceleration differentiator 52, which differentiates the acceleration to generate an output, is coupled to the output of a speed generator 12. The output of the acceleration differentiator 52 is applied to a phase shifter 28 for an armature 8 so that the output is added to an instruction, which is applied by an armature current instructor 25. A part of the armature current is thus controlled as a function of the acceleration change rate. As a result, the armature current quickly responds to the acceleration change rate to improve the speed characteristics the armature current is increased to raise the torque and the delay in a field circuit is compensated to reduce the forcing factor of a field control power source 16. This makes it possible to reduce the capacity of a transformer 36 and the dielectric strength of a thyristor 17.
COPYRIGHT: (C)1979,JPO&Japio
JP3920778A 1978-04-05 1978-04-05 Speed controller for dc elevator Pending JPS54132949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3920778A JPS54132949A (en) 1978-04-05 1978-04-05 Speed controller for dc elevator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3920778A JPS54132949A (en) 1978-04-05 1978-04-05 Speed controller for dc elevator

Publications (1)

Publication Number Publication Date
JPS54132949A true JPS54132949A (en) 1979-10-16

Family

ID=12546679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3920778A Pending JPS54132949A (en) 1978-04-05 1978-04-05 Speed controller for dc elevator

Country Status (1)

Country Link
JP (1) JPS54132949A (en)

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