JP2003274693A - Motor controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor controller which can flexibly correspond to a change of information which is to be transferred between a master controller and the motor controller. <P>SOLUTION: The motor controller 20 is provided with a slave station transmission part 5, a setting table 21, an information setting part 22, and a motor control unit 23. A setting code for selecting a pertinent record of the setting table 21 is stored in a storage region #5 of a slave station transmission memory 7 in the slave station transmission part 5 by the master controller 3. Information stored in the respective storage regions in the slave station transmission memory 7 is set in the information setting part 22 by using a selection code stored in the storage region #5 and the setting table 21. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor control device for controlling an electric motor under the control of a master control device.

[0002]

2. Description of the Related Art FIG. 7 is a diagram showing a configuration in which a motor controller 2 controls a motor 1 under the control of a master controller 4. In this configuration, the master controller 4 controls the motor controller 2 through the master station transmitter 6 and the slave station transmitter 5 included in the master controller 4 and the motor controller 2, respectively.
Information for controlling the electric motor 1 is provided to the master controller 4 from the electric motor controller 2 to the electric motor 1.
The electric motor 1 is accurately controlled by receiving the information related to the control state.

[0003]

The master station transmitter 6 and the slave station transmitter 5 are shown in FIG. 8 for exchanging information between the master controller 4 and the motor controller 2. Thus, it has a master station transmission memory 8 and a slave station transmission memory 7 having a plurality of storage areas for temporarily storing information.

However, regarding the storage areas of the master station transmission memory 8 and the slave station transmission memory 7, the storage area # 1 of the master station transmission memory 8 is connected to the storage area # 1 of the slave station transmission memory 7 and the speed command is issued. Information is transmitted, and the storage area # 2 of the master station transmission memory 8 is connected to the storage area # 2 of the slave station transmission memory 7 to transmit the start command information.
Corresponding to pair 1, they are fixedly connected. Therefore, when information to be exchanged between the master control device 4 and the motor control device 2 is added or changed due to various factors, the master station transmission memory 8 and the slave station transmission memory are updated each time. It is necessary to newly review the interconnection of each storage area of No. 7 and the information to be stored.
There is a problem that flexibility is lacking in changing information to be exchanged between the motor control device 2 and the motor control device 2. That is, the firmware of the motor control device 2 has a plurality of control programs built therein so as to be compatible with various control systems. Therefore, if the interconnection of each storage area and the change of information to be stored can be flexibly performed, the firmware Although it has an advantage that it can be applied to various control systems without requiring a great change in itself, this advantage cannot be fully utilized in a fixed connection.

The present invention has been made to solve the above problems, and provides a motor control device capable of flexibly responding to a change in information to be exchanged between a master control device and a motor control device. The purpose is to provide.

[0006]

In order to achieve the above object, the present invention as set forth in claim 1, is an electric motor control device for driving and controlling an electric motor based on information transmitted / received to / from a master control device. Transmission / reception information storage means having a plurality of storage areas for individually storing information to be stored, and setting information storage means for storing a plurality of setting information indicating settings to be stored in each of the plurality of storage areas, A transmission information setting means for setting information to be stored in each of the storage areas according to selection information from the master control device that selects any one of the setting information.

According to the first aspect of the present invention, any one of the setting information stored in the setting information storage means is selected according to the selection information from the master control device, and the transmission / reception information storage is performed based on this selection information. The information stored in each storage area of the means can be changed appropriately. Thereby, each storage area of the transmission / reception information storage means can be dynamically set, so that it is possible to flexibly deal with the change of transmission / reception information between the master control device and the motor control device.

According to a second aspect of the present invention, in the first aspect of the invention, at least one storage area of the transmission / reception information storage means stores the selection information.

According to the second aspect of the present invention, the selection information is stored in at least one area of the transmission / reception information storage means. With this, since the selection information can be treated as one of the transmission / reception information, the change of the transmission / reception information can be handled more flexibly.

According to a third aspect of the present invention, in the invention according to the second aspect, the plurality of transmission / reception information setting means are respectively the selection information and control stored in the same storage area of the transmission / reception information storage means. The gist is to set the information to be stored in each of the storage areas according to the device designation information that designates the electric motor control device.

According to another aspect of the present invention, the plurality of transmission / reception information setting means can be stored in the transmission / reception information storage means according to the selection information and the device designation information stored in the same storage area. The information stored in each storage area is set appropriately. As a result, even when the master control device controls a plurality of electric motor control devices, the same storage area is shared and used, so that the capacity of the transmission / reception information storage means can be reduced and the amount of information to be transmitted / received can be reduced. You can

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows the configuration of an electric motor control device 20 according to a first embodiment of the present invention. The electric motor control device 20 includes a slave station transmission unit 25, a setting table 21, an information setting unit 22, and an electric motor control unit 23.
And have.

The slave station transmission memory 27 of the slave station transmitter 25 is
For the sake of explanation, in the present embodiment, it is assumed that the information of input 3 lines and output 2 lines is handled. Storage areas # 1 and #
2 stores input information, and storage areas # 3 and # 4 store output information. The storage area # 5 is a storage area for input information newly added for the present invention, and stores a selection code for the master control device 3 to select a corresponding record in the setting table 21 described later.

As shown in FIG. 2, the setting table 21 stores a plurality of setting information corresponding to the above-mentioned selection code, which indicates a combination of information to be stored in the storage areas # 1 to # 4. Specifically, for example, the selection code
For "0", the storage areas # 1 and # 2 are the information to store the speed command and the start command from the master control device 4, respectively, and the storage areas # 3 and # 4 are the master control device 4 respectively.
The information on the speed and the state of the motor control device 2 is set as information to be stored. Further, for the selection code “1”, the storage areas # 1 and # 2 are the information to store the torque command and the start command from the master control device 4, respectively, and the storage areas # 3 and # 4 are the main information. Information on the torque and the state of the electric motor control device 2 to the control device 4 is set as information to be stored. As a result, various information can be assigned to the storage areas # 1 to # 4 according to the value of the selection code.

The information setting section 22 sets the information stored in each storage area of the slave station transmission memory 7 by using the selection code and the setting table 21 stored in the storage area # 5.

The electric motor control section 23 has the information setting section 22.
The electric motor 1 is controlled according to the setting of 1 and information regarding the control state is detected.

Next, the operation of the present embodiment will be described with reference to the flowchart of FIG. 3 showing the operation of the electric motor control device 20.

First, when the power source of the motor control device 20 is turned on, the selection code is written from the master control device 4 to the storage area # 5. Therefore, the information setting section 22 causes the storage area # 5 of the slave station transmission memory 27 to be stored. The information is read, and the corresponding record in the setting table 21 is selected according to the value of the selection code stored in # 5 (steps S11 to S12). As a result, the information stored in the storage areas # 1 to # 4 is set.
And information is exchanged (steps S13 to S16).

Therefore, according to the first embodiment, for example, even when the configuration of the electric motor is changed and the information exchanged with the master control device is changed, the transmission memory is changed. By registering the setting information of each storage area in advance, it is possible to flexibly deal with the change of information to be exchanged.

Further, as a result of such flexibility of changing information, it becomes possible to exchange various information.

In the above case, the information in the storage area # 5 is read when the power source of the motor controller 20 is turned on, but the information in the storage area # 5 is periodically read even after the power is turned on. Read each time, slave station transmission memory 2
Each storage area of 7 may be set. Thereby, it is possible to give more flexibility to the change of the information to be exchanged.

(Second Embodiment) In the second embodiment of the present invention, when the master control device controls a plurality of electric motor control devices, it is proportional to the number of connected electric motor control devices in the past. The storage area of the transmission memory, which has been increasing due to the increase in storage capacity, is kept to a fixed capacity.

FIG. 4 shows the configuration of a motor control device 30i (i = a, ..., N) according to the second embodiment of the present invention. The electric motor control device 30i has a slave station 35.
i (i = a, ..., N) and the setting table 21i (i = a, ..., N)
n), an information setting unit 32i (i = a, ..., N) and an electric motor control unit 23i (i = a, ..., N). The same components as those of the electric motor control device according to the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The slave station transmission memory 37i of the slave station transmitter 35i
(I = a, ..., N) handles the information of input 3 lines and output 2 lines, respectively, as in the first embodiment. In any motor control device 30i, storage areas # 1 and # 2 store input information, and storage areas # 3 and # 4 store output information. The storage area # 5 is a storage area for input information newly added for the present invention,
The device number for designating the electric motor control device 30i to be controlled and the selection code for selecting the corresponding record of the setting table 21i described later are stored. That is, in all the electric motor control devices 30i, the storage areas # 1 to # 5 are used in common with other electric motor control devices 30i.

If the information stored in the storage area # 5 has a data length of 16 bits as shown in FIG.
The device number of the electric control device 30i is assigned to the upper 8 bits, and the selection code is assigned to the lower 8 bits. As a result, the plurality of motor control devices 30i have the same storage area #
Even if 1 to # 5 are shared and used, it is possible to determine whether or not the information is addressed to itself by referring to the device number.

The information setting section 32i has the above-mentioned device number,
The selection code and the setting table 21i are used to determine whether or not the information is addressed to itself, and when it is addressed to itself, the information stored in each storage area of the slave station transmission memory 37i is set.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. 6 showing the operation of the electric motor control device 30i.

First, when the information setting unit 32i exchanges information with the master control unit 4, the slave station transmission memory 37i.
The information in the storage area # 5 is read, the device number stored in # 5 is checked, and it is determined whether the information is addressed to itself (steps S21 and S22). If the information is addressed to itself, the corresponding record of the setting table 21i is selected according to the selection code of the storage area # 5 (step S2).
3). As a result, the information stored in the storage areas # 1 to # 4 is set, and information is exchanged under this setting (steps S24 to S26). On the other hand, if the information is not addressed to itself, no processing is performed (step S22).

As described above, by adding the device number of the motor control device to the exchanged information, the same storage area #
Since 1 to # 5 can be used in common with other electric motor control devices 30i, the transmission memory area to be used can be kept constant even when controlling a plurality of electric motor control devices 30i.

Therefore, according to the second embodiment, the first
In addition to being able to flexibly change the information to be exchanged with the master control device as in the embodiment described above, since the transmission memory area can be kept constant, the amount of information to be exchanged can be reduced. . Further, as a result, the transmission speed can be increased.

Although the device number of the above-mentioned electric motor control device is specified by using a part of the information stored in the storage area # 5, the information of the information stored in the input information storage areas # 1 and # 2 is specified. You may make it specify using one part. Thereby, when the master control device displays the information related to the control of the plurality of electric motor control devices as a trend, for example, even when the speeds of several adjacent electric motor control devices are simultaneously displayed and compared, Since a plurality of device numbers can be designated at the same time, it becomes possible to simultaneously display trend information on control such as speed and torque.

[0033]

As described above, according to the electric motor control device of the present invention, by setting the setting information of each storage area of the transmission memory in the electric motor control device in advance, the main control device and the electric motor control device can be realized. It is possible to flexibly respond to changes in information to be exchanged between the two.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an electric motor control device according to a first embodiment of the present invention.

FIG. 2 is a configuration of a setting table of the electric motor control device according to the first embodiment of the present invention.

FIG. 3 is a flowchart illustrating setting of information to be transmitted and received by the electric motor control device according to the first embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of an electric motor control device according to a second embodiment of the present invention.

FIG. 5 is a configuration of information transmitted and received by the electric motor control device according to the second embodiment of the present invention.

FIG. 6 is a flowchart illustrating setting of information to be transmitted / received by the electric motor control device according to the second embodiment of the present invention.

FIG. 7 is a configuration diagram of a transmission system including a conventional electric motor control device, a master control device, and an electric motor.

FIG. 8 is a diagram illustrating a configuration of a conventional transmission memory.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Motor 2, 20, 30 Motor control device 3 Transmission path 4 Master control device 5, 25, 35 Slave station transmission section (an example of transmission / reception information storage means) 6 Master station transmission section 7, 27, 37 Slave station transmission memory 8 Parent Station transmission memory 21, 21 Setting table (an example of setting information storage means) 22, 32 Information setting section (an example of transmission / reception information setting means) 23 Motor control section

Claims (3)

[Claims] 1. A motor control device for driving and controlling an electric motor based on information transmitted / received to / from a master control device, the transmission / reception information storage means having a plurality of storage areas for individually storing the information to be transmitted / received, In accordance with selection information from a setting information storage unit that stores a plurality of setting information indicating settings to be stored in each of the plurality of storage areas, and the master control device that selects one of the setting information. And a transmission / reception information setting unit that sets information to be stored in each of the storage areas. 2. The electric motor control device according to claim 1, wherein at least one storage area of the transmission / reception information storage means stores the selection information. 3. A plurality of the transmission / reception information setting means respectively responds to the selection information stored in the same storage area of the transmission / reception information storage means and device designation information designating a motor control device to be controlled. The electric motor control device according to claim 2, wherein information to be stored in each of the storage areas is set.