Title:
MOTOR DRIVE CONTROLLER AND CROSSING GATE
Document Type and Number:
Japanese Patent JP2017073922
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make a gate pole at an ascending position descend by the pole's own weight at constant speed when abnormality such as outage and a failure occurs.SOLUTION: A crossing gate 100 comprises: a brushless motor 30 that rotates a motor output shaft 331 to make a gate pole 1 perform ascending/descending action; and a non-contact type electromagnetic brake 50 that starts when driving of the brushless motor 30 is stopped and the gate pole 1 is positioned at an ascending position or a descending position, and brakes rotation of the motor output shaft (braking high-speed shaft) 331. A motor driver 60 comprises a D brake control circuit unit 66 for performing dynamic brake control for regulating rotation speed of the brushless motor 30 be constant speed on the basis of a waveform signal of periodic excitation voltage generated at the electromagnetic brake 50 when the gate pole 1 at the ascending position descends by the pole's own weight at the time of abnormality.SELECTED DRAWING: Figure 1
Inventors:
TSUCHIYA MASARU
UEMURA NAOTO
KAMISATO TAKUYA
UEMURA NAOTO
KAMISATO TAKUYA
Application Number:
JP2015200724A
Publication Date:
April 13, 2017
Filing Date:
October 09, 2015
Export Citation:
Assignee:
KYOSAN ELECTRIC MFG
International Classes:
H02P3/18; B61L29/04; H02P3/22
Attorney, Agent or Firm:
Yasushi Kuroda
Takekoshi Noboru
Inoue Ichi
Takekoshi Noboru
Inoue Ichi