JPH0775359A - Device for driving motor - Google Patents

Abstract

PURPOSE:To provide a device for driving a motor which can be used without resetting parameters thereof every time the kinds of the motor and a detector are changed. CONSTITUTION:A motor 11, a detector 12 for detector the number of revolutions or the position of revolution of the motor 11 and a driving device 13 for controlling the motor 11 are provided. A storage means provided in the detector 12 stores information on the kind of the motor or the detector, the specification thereof, etc., and the information is transmitted to the driving device 13. Thereby the driving device which dispenses with an operation of resetting parameters for different combination of the motor and the detector can be realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor drive device for controlling the rotational speed and rotational position of a motor such as a servomotor, and as a result, controlling the speed and position of a load on a machine or the like. Is.

[0002]

2. Description of the Related Art With the recent development of microprocessor technology, digital control technology has been actively adopted in servo motor drive devices. Further, due to the diversification of applications of servo motors, the high precision of motor control, the increase of pulses, and the advent of absolute value detectors, servo motors are becoming more and more diverse. The same applies to general motors, and there are a wide variety of types in order to meet market demands.

A conventional motor drive device will be described below. FIG. 4 shows the configuration of a conventional motor drive device. In FIG. 4, 11 is a motor and 42 is a motor 11
Detector for detecting the number of rotations or the rotation position of 4
Reference numeral 3 denotes a drive device that drives and controls the motor 11 by using the rotation speed or rotation position of the motor 11 detected by the detector 42.

The operation of the motor drive device constructed as above will be described below. First detector 4
Reference numeral 2 converts the rotation direction, rotation speed, or rotation position of the motor 11 into pulse signals having a phase difference of 90 ° regardless of the type of pulse generation such as magnetic type or optical type. The driving device 43 sends the pulse signal from the detector 42 to the motor 11
It is converted back to the feedback information of the rotation direction, rotation speed, or rotation position of. Then, the drive device 43 compares the feedback information with a preset command value, calculates a torque command value necessary to correct the deviation between the two, and controls the electric power supplied to the motor 11. Here, the conversion of the pulse signal from the detector 42 into the feedback value in the drive device 43 and the conversion of the torque command value calculated in the drive device 43 into the electric power supplied to the motor 11 are performed inside the drive device 43. The calculation is performed using the set parameters.

[0005]

However, in the above-mentioned conventional configuration, the values of the parameters used for conversion inside the drive unit 43 differ depending on the types of the motor and the detector, so when using different motors and detectors. Is
It was necessary to reset the parameters of the drive unit. This setting becomes complicated as the types of motors and detectors increase.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a motor drive device that does not depend on the types of the motor and the detector.

[0007]

In order to achieve this object, the motor drive device of the present invention has information such as the type and specifications of the motor or the detector on the detector side, and this information is used when starting up. It has a structure for transmitting to the drive device.

[0008]

With this configuration, among the parameters or circuits of the drive device, the parameters or circuits relating to the motor or the detector can be automatically set, and the parameters can be reset for any combination of the motor and the detector. It is possible to realize a drive device that does not require the work to be performed.

[0009]

(Embodiment 1) A first embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 11 is a motor, 12 is a detector directly connected to the shaft of the motor 11, and 13 is a detector 1.
2 is a drive device for controlling the motor 11 by feeding back information on the number of rotations or the rotational position of the motor 11 from 2.

In FIG. 2, 22 is a DIP switch,
Reference numeral 23 is a jumper wire, both of which are built in the detector 12.

The operation of the motor drive device constructed as above will be described. The detector 12 transmits the data represented by the mounted DIP switch 22 and jumper wire 23 to the drive device 13 at the time of power-on or reset. The drive 13 uses that data to set internal parameters depending on the detector or motor.

As a result, even when the detector or the motor is replaced with another one, since the detector has information depending on them, the driving device can automatically set the parameters, and The parameter setting work by can be omitted.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.

In FIG. 3, 11 is a motor, 32 is a detector for detecting the number of revolutions or rotational position of the motor 11, 33 is a cable for transmitting the signal detected by the detector 32, and 34 is a signal of the detector 32. Is a drive device for controlling the motor 11 by means of. Reference numeral 35 is a storage means provided in the detector.

The detector 32 detects the number of rotations and the rotational position of the motor, and transmits the information to the drive device 34 using the cable 33. There are various transmission methods, but serial transmission requires less wiring between the detector and the driving device, so serial transmission is used as long as the transmission speed allows.

Here, the detector 32 using the cable 33 is used.
By serially transmitting the data of the EEPROM as the storage means 35 mounted on the drive unit 34, the drive device 34 can automatically set the parameters and operate the motor 11.

The second embodiment is excellent in that it is not necessary to increase the number of wires because the cable for transmitting the feedback signal of the detector is used.

As an example of the storage means 35, EEPRO
Although M is used, it goes without saying that the same operation and effect can be obtained by other storage means.

[0020]

As described above, according to the present invention, by storing information such as the type and specifications of the motor or the detector itself in the storage means provided in the detector, any motor and detector can be operated by one driving device. It is possible to realize an excellent motor drive device that can be applied to any combination of the above.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a motor drive device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a detector according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a motor drive device according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional motor drive device.

[Explanation of symbols]

 11 motor 12, 21, 32, 42 detector 13, 34, 43 drive device 22 DIP switch 23 jumper wire 33 cable 35 storage means (EEPROM)

Claims (2)

[Claims] 1. A motor, a detector for detecting a rotational speed or a rotational position of the motor, and a drive device for controlling the rotational speed or a rotational position of the motor, wherein the detector is provided with a storage means. Storing the specifications of the detector in the means, and transmitting or exchanging information with the drive device,
A motor drive device characterized by automatically adjusting the drive device and setting parameters. 2. A motor, a detector for detecting the rotational speed or rotational position of the motor, and a drive device for controlling the rotational speed or rotational position of the motor. A motor driving device, characterized in that information of motor specifications is stored in the means, information is transmitted or exchanged with the driving device, and the driving device is automatically adjusted and parameters are set.