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Control device and control system

A control device and control system technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as difficulty in measuring execution time

Pending Publication Date: 2021-05-18
FANUC LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Measuring the execution time of such programs is difficult

Method used

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  • Control device and control system
  • Control device and control system
  • Control device and control system

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Embodiment Construction

[0029] Hereinafter, the control device of the present disclosure will be described. figure 1 It is a hardware configuration diagram of a control device according to an embodiment. The control device 100 includes a CPU 11 , a ROM 12 , a RAM 13 , a nonvolatile memory 14 , a bus 15 , and a drive control unit 20 that controls a drive unit 30 of an industrial machine 40 .

[0030] The CPU 11 is a processor that controls the control device 100 as a whole. CPU11 reads the system program stored in ROM12 via bus 15, and controls the whole control apparatus 100 according to this system program. Temporary calculation data, display data, various data input by an operator, and the like are temporarily stored in the RAM 13 .

[0031] The nonvolatile memory 14 is, for example, backed up by a not-shown battery or the like, and is configured as a memory that maintains a storage state even when the control device 100 is powered off. A program read from an external device not shown, a progra...

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Abstract

The invention provides a control device and a control system. The control device records the command and execution time information of the industrial machine. When there is a command requiring a preparation time, the control device analyzes the program, and calculates an advanced command time obtained by subtracting the preparation time from the start time of the command on the basis of the recorded execution time. When the advance command time is reached, the control device outputs a command requiring the preparation time in advance, and the preparation time is shortened.

Description

technical field [0001] The present invention relates to a control device and a control system of an industrial machine. Background technique [0002] Mechanical action requires preparation time. For example, the spindle of a machine tool driven by an induction motor. In vector control of an induction motor, the torque is controlled using flux and torque current. The magnetic flux is a first-order lagging element of the exciting current, and it requires a preparation time until the magnetic flux rises sufficiently. [0003] When the magnetic flux of the induction motor is increased, the responsiveness of the main shaft is improved, and the torque output is also improved. On the other hand, if the magnetic flux is increased, the power consumption increases and the motor generates heat. Therefore, in the control of the induction motor, the excitation current is increased or decreased as necessary to reduce power consumption and suppress heat generation. [0004] Specifical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/416
CPCG05B19/416G05B2219/34169G05B19/4155G05B2219/31449
Inventor 小木曾太郎
Owner FANUC LTD
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