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motor control system

A control system and motor technology, applied in the direction of motor control, control system, vector control system, etc., can solve problems such as complex processing, and achieve the effect of stable inertia estimation

Active Publication Date: 2019-05-07
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, regarding this point, Patent Document 1 also discloses a solution for performing averaging after converting the signal converted into an absolute value, but there is a problem that the processing is more complicated.

Method used

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Embodiment approach

[0023] Next, use Figure 1 to Figure 5 , the motor control system 100 according to the embodiment of the present invention will be described. figure 1 It is a block diagram showing the configuration of the motor control system 100 according to the embodiment of the present invention. figure 2 It is a wireframe diagram obtained by modeling the motor control process executed by the motor control device 2 according to the embodiment. image 3 It is a diagram showing a hardware configuration when the functions of the controller 1 or the motor control device 2 according to the embodiment are realized by a computer. Figure 4 It is a flowchart showing processing at the time of inertia estimation in the embodiment. Figure 5 It is a waveform diagram showing the speed and torque command of the motor when self-excited vibration occurs in the embodiment.

[0024] exist figure 1 Among them, the motor control system 100 has: a controller 1 that generates a position command; a motor c...

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Abstract

A motor control system includes a control processing unit to generate a torque command based on a command signal for controlling a motor that drives a mechanical load, a detection signal output from a detector provided in the motor, and a control gain, and to control the motor based on the torque command, a parameter setting unit to perform parameter setting for setting a limit value of the torque command and the control gain, and an inertia estimating unit to estimate inertia of the motor based on the detection signal and the torque command. The inertia estimating unit estimates the inertia in a state where self-excited vibration occurs in the motor due to the parameter setting.

Description

technical field [0001] The present invention relates to a motor control system including a motor control device that drives an industrial mechanical device such as a machine tool. Background technique [0002] A device for driving an industrial mechanical device generally includes: a motor connected to a moving body to be driven via a mechanical transmission mechanism to transmit power to the moving body; and a motor control device based on a command input from a controller. The signal and the detection signal of a detector that detects the position or speed of the motor drive the motor so that the motor operates in a target operation mode. [0003] Here, in the motor control device, it is desirable to accurately obtain the moment of inertia of the moving body to be driven. The advantages achieved by obtaining the inertia are as follows. [0004] First, by obtaining the inertia, it is possible to know the setting reference of the position gain or the speed gain as a parame...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/40
CPCB23Q15/12H02P21/143H02P23/14H02P29/40Y02P70/10
Inventor 田边章
Owner MITSUBISHI ELECTRIC CORP