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motor control system

A control system and motor technology, applied in the control system, motor speed or torque control, multiple motor speed adjustment, etc., can solve the problems of complicated upper control device, larger size, higher cost, etc.

Active Publication Date: 2018-06-08
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the former case (when external position detectors are connected to each of the two-axis motor drive units), two external position detectors are required, and there are problems such as an increase in the cost and size of the industrial machinery.
[0005] In addition, in the case of the latter (in the case where an external position detector is connected to the upper-level control device), it is necessary to install a connection mechanism with the external position detector not on the side of the motor drive device but on the side of the upper-level control device. Issues such as complex control device, high cost, and large size

Method used

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Embodiment approach 1

[0021] figure 1 It is a block diagram of the motor control system in Embodiment 1 of this invention. This motor control system is a system that uses a plurality of motors to control the arrangement position of a control object, etc., like the multi-axis motor control used in industrial machinery and the like. Embodiment 1 is an example showing the basic structure of the present invention, refer to figure 1 This motor control system will be described.

[0022] Such as figure 1 As shown, the motor control system of this embodiment has the motor drive device 12a and the motor drive device 12b which independently control two motors, and also has the host control device 11 which controls these motor drive devices. In this embodiment, an example including two motor drive devices including a motor drive device 12a as a first motor drive device and a motor drive device 12b as a second motor drive device is mentioned as a plurality of motor drive devices. In addition, in order to d...

Embodiment approach 2

[0045] figure 2 It is a block diagram of the motor control system in Embodiment 2 of this invention. In this embodiment, as a plurality of motor drive devices, the structure includes a first motor drive device 22a connected to the external position detector 19a and a second motor drive device 12b not connected to the external position detector 19a. This embodiment is an application structure of the present invention. In comparison with the motor drive device 12a of Embodiment 1, as figure 2 As shown, the first motor drive device 22a also has a position information storage unit 20a. In addition, in figure 2 In the description, the same reference numerals are attached to the same constituent elements as in Embodiment 1, and the same constituent elements perform the same operations as in Embodiment 1, respectively. Note that the detailed description of the same components as those in Embodiment 1 will be omitted.

[0046] In this embodiment, considering the delay before th...

Embodiment approach 3

[0054] Figure 5 It is a block diagram of a motor control system according to Embodiment 3 of the present invention. The present embodiment is configured as a plurality of motor drive devices including a first motor drive device 32a connected to the external position detector 19a and a second motor drive device 32b not connected to the external position detector 19a. In this embodiment, in comparison with Embodiments 1 and 2, as Figure 5 As shown, the motor drive devices 32a, 32b have position information selection units 21a, 21b, respectively. Furthermore, the second motor drive unit 32b has an external position detection connection 16b. In addition, in Figure 5 In the description, the same reference numerals are assigned to the same constituent elements as in Embodiments 1 and 2, and the same constituent elements perform the same operations as in Embodiments 1 and 2, respectively. In addition, detailed description of the same components as those in Embodiments 1 and 2 ...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To provide a motor control system that can control a plurality of motor operations via position information from a single external position detector.SOLUTION: A motor drive device A12a includes: external position detector connection means 16a for capturing position information from an external position detector 19a; serial communication means 13a for sending the captured position information to other motor drive devices 12 and receiving a position command from a host control device 11; and motor control means 18a for controlling motor operation such that the position information matches the position command. A motor drive device B12b includes: serial communication means 13b for receiving the position information sent from the motor control device A12a and receiving a position command from the host control device 11; and motor control means 18b for controlling motor operation such that the position information matches the position command. The plurality of motor operations are controlled via the position information from the single external position detector.

Description

technical field [0001] The present invention relates to a motor control system, which connects a superior control device used in industrial machinery and the like to a plurality of motor drive devices through serial communication, and performs full close control on the operation of a plurality of motors. Background technique [0002] Conventionally, in industrial machines and the like, a fully enclosed control has been proposed in which a single work (work) (table, etc.) is moved synchronously by a two-axis motor, and the position information of the work is fed back to the motor drive device for control. In the case of such a conventional full-enclosed control, an external position detector for detecting the position of the workpiece is connected to each motor drive device and controlled (for example, refer to Patent Document 1). [0003] Also, conventionally, a control method has been proposed in which one external position detector is connected to a host control device, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/00H02P5/46H02P5/52H02P5/54
Inventor 池内庆成
Owner PANASONIC CORP