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Title:
CONTROLLER OF DC MOTOR
Document Type and Number:
Japanese Patent JPS60176477
Kind Code:
A
Abstract:
PURPOSE:To eliminate the flow of a large current to an armature by braking a motor in a generating manner while the rotation of the motor is faster with respect to a command when the motor is switched from normal rotation to reverse rotation or vice versa, and setting to the normal state when the rotating speed is sufficiently decreased. CONSTITUTION:A comparator 4 compares the set value of a speed setter 1 with an output from a speed detecting generator 3, and applies its output through an amplifier 5 to a rotating direction discriminator 6 and a drive circuit 7. A rotating speed decrease detector 16 receives the output from the generator 3 and detects the decrease of the rotating speed of a motor 2 to the prescribed range. The motor is braked in a generating manner while the rotation of the motor 1 is fast with respect to the command when the motor 2 is switched from normal to reverse rotation or vice versa on the basis of the output, and set to the normal state (blanking) when the rotating speed drops to the prescribed range.

Inventors:
SAITOU MORIHIRO
SHIYOUJI TAKASHI
Application Number:
JP3223384A
Publication Date:
September 10, 1985
Filing Date:
February 22, 1984
Export Citation:
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Assignee:
NIHON DENKI SEIKI KK
International Classes:
H02P3/08; H02P3/14; H02P7/03; H02P7/29; (IPC1-7): H02P3/08; H02P7/29
Domestic Patent References:
JPS567494B21981-02-18



 
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