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Control device and control method

A control device, electromagnetic brake technology, applied in the direction of controlling electromechanical brakes, control systems, electrical components, etc., can solve the problem of electric motor electromagnetic brake specification limitations and other issues

Active Publication Date: 2014-05-21
HIRATA & CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These control units are described in, for example, Patent Document 1 and Patent Document 2, and it is preferable to use common motors and electromagnetic brakes. However, in existing general-purpose units, the specifications of the motor and the electromagnetic brake are limited.

Method used

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  • Control device and control method
  • Control device and control method

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Experimental program
Comparison scheme
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no. 1 approach

[0018] figure 1 It is a block diagram of the control apparatus A concerning one embodiment of this invention. The control device A includes a connection unit 1 electrically connected to the motor M, and a connection unit 2 electrically connected to the electromagnetic brake Bk. The electric motor M assumes an AC motor in the case of the present embodiment. The electromagnetic brake Bk is driven by a DC voltage. In the present embodiment, it is assumed that the electromagnetic brake Bk operates in a non-braking state while the DC voltage is being supplied, and operates in a braking state when the supply is cut off. On the contrary, it is also possible to be in the braking state during the supply of the DC voltage, and to be in the non-braking state when the supply is cut off.

[0019] The electromagnetic brake Bk is, for example, connected to the drive shaft of the motor M, and the connection parts 1 and 2 that stop the rotation of the drive shaft of the motor M in the brakin...

no. 2 approach

[0034] In the above-mentioned first embodiment, the configuration in which the control device A is provided with the AC / DC converter 5 is employed, but a configuration in which the AC / DC converter 5 is not provided may also be employed. Figure 4 It is a block diagram of a control device B according to another embodiment of the present invention. In the same figure, the same reference numerals are assigned to the same structures as those of the control device A, and explanations thereof will be omitted, and only different structures will be described below.

[0035] The control device B does not include the AC / DC converter 5 like the control device A, but the AC / DC converter 5 is an external structure of the control device B. Furthermore, the DC voltage output from the AC / DC converter 5 is input to the connection unit 3 , and the bus bar bb is connected to the connection unit 3 .

no. 3 approach

[0037] In the above-mentioned first embodiment, in generating the drive voltage of the electromagnetic brake Bk, the DC voltage generated in the process of generating the drive voltage of the motor M is used as the DC voltage used in driving the motor M, but it is also possible to use The driving voltage of the motor M. Figure 5 It is a block diagram of a control device C according to another embodiment of the present invention. In the same figure, the same reference numerals are assigned to the same structures as those of the control device A, and explanations thereof will be omitted, and only different structures will be described below.

[0038] The control device C does not include the AC / DC converter 5 like the control device A, but the AC / DC converter 5 is an external structure of the control device C. Furthermore, the DC voltage output from the AC / DC converter 5 is input to the connection unit 3 , and the bus bar bb is connected to the connection unit 3 . The motor M...

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PUM

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Abstract

A control device has a motor and an electromagnetic brake which are electrically connected to each other and outputs a driving voltage to the motor and the electromagnetic brake. The control device comprises a PWM signal output means for outputting a PWM signal of duty ratio based on a set voltage which is set with respect to the electromagnetic brake in advance, and an electromagnetic brake driving means which receives part of a direct-current (DC) voltage used for driving the motor, converts the part of the DC voltage into a DC voltage in proportion to the duty ratio of the PWM signal outputted from the PWM signal output means, and outputs the converted DC voltage to the electromagnetic brake.

Description

technical field [0001] The present invention relates to a control device and a control method of a motor and an electromagnetic brake. Background technique [0002] In general, when using an electric motor and an electromagnetic brake together, the electromagnetic brake is selected according to the specification and application of the electric motor. Therefore, the combination of the electric motor and the electromagnetic brake motor is not limited to the same specification, and it is often necessary to provide control units for the electric motor and the electromagnetic brake separately. These control units are described in, for example, Patent Document 1 and Patent Document 2. It is preferable that the motor and the electromagnetic brake be used in common. However, in conventional common units, the specifications of the motor and the electromagnetic brake are limited. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 11-113295 [0004] Patent Document...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P15/00
CPCH02P15/00
Inventor 野口幸一
Owner HIRATA & CO LTD