JP3905441B2 - Motor with encoder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a motor with an encoder for detecting that the combination of a motor with an encoder and a control device for driving the motor with an encoder has changed.
[0002]
[Prior art]
For example, a technique disclosed in Japanese Patent Laid-Open No. 63-190584 will be described with reference to FIG.
1 and 4 are microcomputers, 2 is a line driver, 3 is a line receiver, 5 is a ROM, and 6 is a servo motor. Reference numeral 7 is a control device, and 8 is an encoder connected to the servo motor 6. Reference numeral 9 denotes an EEROM. When the control device 7 is newly connected to the servo motor 6, the information unique to each motor stored in the ROM 5 is sent to the control device to cause the microcomputer 1 to read this information, which is necessary for the speed and position control device. This makes it possible to automatically set initial parameters.
[0003]
[Problems to be solved by the invention]
However, in such prior art, the motor-specific information is the same for the same model and the same rating, and cannot be detected by the control device when the motor is replaced. If the inherent characteristics (resistance, inductance, etc.) are different, it is necessary to input the characteristics from the outside to the control device, and they must be readjusted. There was a problem that the motor did not rotate, the motor did not rotate, or vibrated.
It is an object of the present invention to provide a control method in which if a motor is replaced, it can be seen that the motor has been replaced, and a characteristic characteristic of the motor is obtained along with the replacement, so that the motor can be operated smoothly.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, in an encoder-equipped motor having an encoder section, data transmitting means for transmitting position information of the encoder-equipped motor to a motor control device, and identification information for identifying each of the encoder-equipped motors in the same model And storage processing means for transmitting the identification information as information for identifying the presence or absence of motor replacement within the same species to the motor control device via the data transmission means. It is a feature.
[0005]
[Action]
By the above means, it can be understood that the motor is replaced, and the characteristics of the motor can be obtained. And the malfunction when a characteristic differs can be prevented beforehand.
[0006]
【Example】
Hereinafter, a specific embodiment of the present invention will be described with reference to FIG.
1, 10 is a EEROM which stores an identification code (ID) and the motor, the motor-specific parameters, and the like. Others are the same as in FIG.
The operation of the circuit configured as described above will be described. FIG. 2 is a diagram for explaining the operation of the present invention.
First, the encoder 8 transmits the position of the normal motor to the control device 7 by serial transmission or pulses. When the control device 7 is turned on (step 1), the motor identification code (ID) is inquired to the microcomputer 4 of the encoder 8 by serial transmission via the line driver 2 on the control device side and the line receiver 3 on the encoder side . When the response by this and the identification code (ID) originally obtained by the control device 7 match, since the motor has not changed from before, the motor is determined from the data obtained in the EEROM 9 of the control device 7. It can be controlled (step 2).
However, if the identification code (ID) obtained by the control device 7 is different, the identification code (ID) of the control device 7 is rewritten with that of the motor after the replacement (step 3), and motor-specific data (for example, winding) Resistance or inductance) and parameters (for example, offset value, temperature coefficient of winding resistance, etc.) are obtained from the encoder 8 or measured, and written into the EEROM 9 as they are or as processed data (step 4). As a result, the motor can be controlled as described above even when the power is turned on after the next time and the motor other than the motor is used.
The identification code may be a serial number for each motor, for example.
Further, the EEROM 10 of the encoder 8 may be a rewrite of the EEROM 9 of the control device 7 as a ROM. Further, the EEROM may be a backed up RAM.
[0007]
【The invention's effect】
As described above, according to the present invention, it can be seen that the motor has been replaced, so the motor characteristics and the like can be obtained, and the adjustment can be performed again, or a precise adjustment suitable for the motor can be performed without any external input. Problems due to different characteristics can be prevented in advance.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a specific embodiment of the present invention.
FIG. 2 is a diagram illustrating the operation of the present invention.
FIG. 3 is a configuration diagram of a conventional embodiment.
[Explanation of symbols]
1, 4 Microcomputer 2 Line driver 3 Line receiver 5 ROM
6 Motor 7 Control device 8 Encoder 9, 10 EEROM

Claims (1)

In a motor with an encoder equipped with an encoder,
Data transmitting means for transmitting position information of the motor with the encoder to a motor control device;
Storage means for storing identification information for identifying each motor with an encoder in the same species ;
An encoder-equipped motor comprising transmission processing means for transmitting the identification information to the motor control device via the data transmission means as information for identifying the presence or absence of motor replacement within the same species .

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