JPWO2020012656A1 - Motor drive controller - Google Patents

Abstract

The motor drive control device (100) can receive an input of a motion detection value (MDV) and outputs a motion detection value as sensor input information (SII). A sensor communication unit (106) including one encoder receiving circuit. And a sensor-equipped control unit (101) that generates and outputs a drive command (DIA) based on the operation command (OC) and the sensor input information, and a drive command based on the operation command without using the sensor input information. A sensorless control unit (102) that generates and outputs (DIB), and a switching unit (103) that outputs one of a drive command (DIA) and a drive command (DIB) as a motor drive command (MDI). And a power supply unit (104) that generates electric power (EP) to be applied to the motor based on the motor drive command, and the switching unit (103) outputs the drive command (DIB) as the motor drive command. The communication unit (106) can accept an input of a signal other than the motion detection value, and outputs the accepted signal as sensor input information.

Description

The present invention relates to a motor drive control device that supplies electric power to a motor.

In Patent Document 1, in order to reduce the number of parts, in a servo motor drive control device including a plurality of encoder reception circuits, if there are few movable parts that are driven and controlled by a servo motor, an interface is provided for the remaining encoder reception circuits. There is described a configuration in which a sensor for detecting the acceleration or the temperature adjusted by is connected.

JP, 2005-229668, A

A general-purpose servo motor drive control device often includes only one encoder reception circuit for one servo motor drive control device. The technique described in Patent Document 1 is premised on the case where the servo motor drive control device includes a plurality of encoder reception circuits, and suppresses an increase in the number of parts when only one encoder reception circuit is provided. Is not considered.

The present invention has been made in view of the above, and in a motor drive control device having only one encoder reception circuit, a motor drive control capable of connecting a new sensor without increasing the number of parts. The purpose is to obtain the device.

In order to solve the above problems and achieve the object, a motor drive control device for generating electric power to be applied to a motor according to the present invention can accept an input of an operation detection value indicating an operation position or an operation speed of the motor. Yes, the sensor communication unit including one encoder reception circuit that outputs the received motion detection value as sensor input information is provided. The motor drive control device includes a sensor-equipped control unit that generates and outputs a first drive command based on a motion command and a sensor input information for a motion position or a motion speed of a motor, and a sensor input information based on the motion command. And a sensorless control unit that generates and outputs the second drive command without using it. The motor drive control device selects one of the first drive command and the second drive command and outputs the selected drive command as a motor drive command, and a motor drive command output from the switch unit. And a power supply unit that generates power to be applied to the motor. When the switching unit outputs the second drive command as the motor drive command, the sensor communication unit can accept an input of a signal other than the motion detection value, and outputs the accepted signal as sensor input information.

The motor drive control device according to the present invention has the effect of being able to connect a new sensor without increasing the number of parts in a motor drive control device having only one encoder reception circuit.

FIG. 3 is a diagram for explaining the configuration of the motor drive control device according to the first embodiment of the present invention. FIG. 3 is a diagram for explaining the configuration of the sensor communication unit according to the first embodiment of the present invention. FIG. 3 is a diagram for explaining the configuration of the motor drive control device according to the first embodiment of the present invention. FIG. 3 is a diagram for explaining a configuration of a motor drive control system including a motor drive control device according to a second embodiment of the present invention. FIG. 3 is a diagram for explaining a configuration of a motor drive control system including a motor drive control device according to a second embodiment of the present invention. Flowchart of communication protocol determination processing executed by the sensor communication unit according to the third embodiment of the present invention Flowchart of drive command selection processing executed by the motor drive control device according to Embodiment 4 of the present invention Flowchart of drive command selection processing executed by the motor drive control device according to Embodiment 4 of the present invention

Hereinafter, a motor drive control device according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
First, a motor drive control device according to the first embodiment of the present invention will be described. 1, FIG. 2 and FIG. 3 are diagrams for explaining the configuration of the motor drive control device according to the first embodiment of the present invention. FIG. 1 is an example in which a motor position detection sensor is used as a sensor, and FIG. 3 is an example in which a temperature sensor is used as a sensor. FIG. 2 is a diagram showing a configuration example of the sensor communication unit 106 shown in FIGS. 1 and 3.

The motor drive control device 100 shown in FIGS. 1 and 3 is a device that supplies electric power to the motor 300. The motor drive control device 100 gives the motor 300 such that the motion detection value MDV representing the motion position or speed of the motor 300 follows the motion command OC, which is a motion target value for the motion position or speed of the motor 300. Electric power EP is generated. The motor drive control device 100 includes a sensor presence control unit 101, a sensorless control unit 102, a switching unit 103, a power supply unit 104, a processor 105, and a sensor communication unit 106.

Based on the operation command OC and the sensor input information SII output from the sensor communication unit 106, the sensor-equipped control unit 101 calculates the drive command DIA so that the sensor input information SII follows the operation command OC. The drive command DIA is output to the switching unit 103. The drive command DIA corresponds to the first drive command. The method for calculating the drive command DIA may be any method such as P (Proportional) control, PI (Proportional Integral) control, PID (Proportional Integral Differential) control, and adaptive control.

Based on the operation command OC, the sensorless control unit 102 outputs the drive command DIB so that the operation detection value MDV of the motor 300 follows the operation command OC without using the sensor input information SII output from the sensor communication unit 106. The calculated drive command DIB is output to the switching unit 103. The drive command DIB corresponds to the second drive command. As a calculation method for causing the motion detection value MDV of the motor 300 to follow the motion command OC without using the sensor input information SII, for example, a motor based on induced voltage information when driving an IPM (Interior Permanent Magnet) motor is used. There is a method of estimating the position information of the above and controlling the position and speed based on the estimated position information, or a method of driving an induction motor. In this embodiment, the calculation method of the sensorless control unit 102 is not limited to the above method.

The switching unit 103 selects either one of the drive command DIA output from the sensor-equipped control unit 101 and the drive command DIB output from the sensorless control unit 102, and outputs one of them to the motor 300. Is output to the power supply unit 104. In FIG. 1, the switching unit 103 outputs the drive command DIA output from the sensor-equipped control unit 101 to the power supply unit 104 as a drive command MDI that gives the motor 300. In FIG. 3, the switching unit 103 outputs the drive command DIB output from the sensorless control unit 102 to the power supply unit 104 as a drive command MDI that gives the motor 300.

Power supply unit 104 generates electric power EP to be applied to motor 300 based on drive command MDI output from switching unit 103 to motor 300, and outputs electric power EP to motor 300. The power supply unit 104 is, for example, an inverter circuit including a plurality of switching elements.

The sensor input information SII is input to the processor 105, and the processor 105 calculates the protection of the motor drive control device 100 and the motor 300, and the life diagnosis. The processor 105 is an integrated circuit for control, and is, for example, a CPU (Central Processing Unit) or a microprocessor. 1 and 3, the sensor presence control unit 101, the sensorless control unit 102, the switching unit 103, and the processor 105 are illustrated separately, but the processor 105 includes the sensor presence control unit 101, the sensorless control unit 102, and the switching unit. The function of 103 may be included.

The sensor communication unit 106 receives information from various sensors such as the sensor 400 outside the motor drive control device 100. The sensor communication unit 106 is composed of one encoder reception circuit. In FIG. 1, a motion detection value MDV representing the motion position or motion speed of the motor 300 is input from the sensor 400. In FIG. 3, temperature information TI is input from the temperature sensor 500. The sensor communication unit 106 can accept input of sensor information other than the operation detection value MDV of the motor 300. In both configurations shown in FIGS. 1 and 3, the sensor communication unit 106 outputs the input motion detection value MDV or the temperature information TI as the sensor input information SII.

As shown in FIG. 2, the sensor communication unit 106 includes a sensor transmission/reception unit 1061 and a sensor type determination unit 1062. The sensor transmission/reception unit 1061 receives the motion detection value MDV input from the sensor 400 and outputs it to the sensor type determination unit 1062. The sensor type determination unit 1062 determines the sensor type based on the signal input from the sensor transmission/reception unit 1061, generates a selection signal DSI based on the determined sensor type, and outputs the selection signal DSI to the switching unit 103. The selection signal DSI is a selection signal indicating which of the drive command DIA that is the first drive command and the drive command DIB that is the second drive command is selected. For example, which of the first drive command and the second drive command is selected for each sensor type is set in the sensor type determination unit 1062, and the sensor type determination unit 1062 determines the sensor type determination result. Generate a selection signal based on Note that any method may be used as the method for determining the sensor type, but the sensor type can be determined based on the format of the information output from the sensor, for example. Although FIG. 2 illustrates an example in which the motion detection value MDV is input, in the case of the example in FIG. 3, the temperature information TI is input to the sensor communication unit 106.

In the configuration shown in FIG. 1, the sensor communication unit 106 is input with the motion detection value MDV indicating the motion position or motion speed of the motor 300. Therefore, the sensor type determination unit 1062 determines that the sensor type is the motor position detection sensor, and outputs a signal indicating selection of the drive command DIA to the switching unit 103 as the selection signal DSI. The switching unit 103 selects the drive command DIA from the sensor-equipped control unit 101 based on the selection signal DSI and outputs it to the power supply unit 104 as a drive command MDI to be given to the motor 300.

In the configuration shown in FIG. 3, the sensor communication unit 106 receives the temperature information TI instead of the motion detection value MDV. Therefore, the sensor type determination unit 1062 determines that the sensor type is the temperature sensor, and outputs, as the selection signal DSI, a signal indicating selection of the drive command DIB to the switching unit 103. The switching unit 103 selects the drive command DIB from the sensorless control unit 102 based on the selection signal DSI and outputs it to the power supply unit 104 as a drive command MDI to be given to the motor 300. Since the sensorless control unit 102 can generate the drive command DIB without the motion detection value MDV, the motor drive control device 100 takes in temperature information TI from another sensor, for example, the temperature sensor 500 installed in the motor 300. be able to. In the motor drive control device 100, the temperature information TI is processed by the processor 105 and used for diagnosing an alarm for protecting the motor 300 or the motor drive control device 100, or diagnosing the life of the motor 300 or the motor drive control device 100. be able to. The sensor information input to the sensor communication unit 106 is not limited to the temperature information TI. Output information from a torque sensor, a vibration sensor, or an I/O input/output device may be input to the sensor communication unit 106. When the output information from the torque sensor or the vibration sensor is input to the sensor communication unit 106, it is possible to detect the failure of the mechanical device connected to the motor 300 from the sensor input information SII.

In the motor drive control device 100 according to the present embodiment, in the motor drive control device 100 that switches between sensor presence control and sensorless control, sensor information other than the operation detection value MDV of the motor 300 is stored in the sensor communication unit 106 that is unnecessary during sensorless control. Is entered. The sensor communication unit 106 can accept input of sensor information other than the operation detection value MDV of the motor 300. Thereby, it is possible to input the information of a new sensor such as a temperature sensor, a torque sensor, or a vibration sensor to the motor drive control device 100 without increasing the number of parts. By using the information of the new sensor, the motor drive control device 100 can add functions such as device protection and advance detection of device failure without increasing the number of parts.

In the motor drive control device 100 according to the present embodiment, the drive part that requires high-precision control is controlled with a sensor, and although the accuracy is not required, an additional function using the temperature sensor 500, the torque sensor, or the vibration sensor is performed. The sensorless control may be performed for the driving portion that is required. In a mechanical device, a drive part that requires high precision and a drive part that does not require precision may coexist. In the motor drive control device 100, different requirements can be realized by one motor drive control device 100 without increasing the number of parts, and the engineering software and the manual required for the motor drive control device 100 can be shared. Therefore, it is possible to reduce the load for the operator to learn the engineering software and the operation of the motor drive control device 100.

In the present embodiment, the sensor-equipped control unit 101 and the sensorless control unit 102 are always configured to calculate, but the sensor-equipped control unit that outputs the drive command DIA or the drive command DIB that is not selected to the switching unit 103. 101 or the sensorless control unit 102 may stop the calculation. When the switching unit 103 outputs the drive command DIA of the sensor-equipped control unit 101 as the drive command MDI to give to the motor 300, the calculation of the sensorless control unit 102 may be stopped, and the switching unit 103 may drive the sensorless control unit 102. When DIB is output as the drive command MDI to be given to the motor 300, the calculation with the sensor-equipped control unit 101 may be stopped.

In the present embodiment, the sensor communication unit 106 generates the selection signal DSI indicating which of the first drive command and the second drive command is to be selected, based on the received sensor input information, and the selection signal The DSI is output to the switching unit 103, and the switching unit 103 selects one of the drive command DIA and the drive command DIB based on the selection signal DSI. For example, when the motion detection value MDV is input to the sensor communication unit 106, the switching unit 103 outputs the drive command DIA from the sensor presence control unit 101 to the motor based on the selection signal DSI input from the sensor communication unit 106. When the temperature information TI is input to the sensor communication unit 106 as a drive command MDI to be given to the motor 300, and the temperature information TI is input to the sensor communication unit 106, the sensorless control unit 102 gives the drive command DIB to the motor 300 as the power command MDI. Output to 104. In the example described above, the sensor communication unit 106 determines the sensor type, and the switching unit 103 selects the signal to be output to the power supply unit 104 based on the determination result. The method of selecting the signal in is not limited to this example. For example, the switching unit 103 may perform selection by a command from the external device 200 or an engineering tool of a personal computer. Further, in the present embodiment, the signal indicating which of the drive command DIA and the drive command DIB is selected is used as the selection signal, but the selection signal may be a signal indicating the type of sensor. In this case, the switching unit 103 selects either the drive command DIA or the drive command DIB according to the type of the sensor indicated by the selection signal. In this case, it is assumed that the switching unit 103 sets the correspondence between the sensor type and the drive command DIA or the drive command DIB to be selected.

In the present embodiment, the operation command OC is input to the motor drive control device 100 from outside the motor drive control device 100. However, for example, the operation command OC is generated inside the motor drive control device 100. May be.

Embodiment 2.
Next, a motor drive control device according to the second embodiment of the present invention will be described. 4 and 5 are diagrams for explaining the configuration of a motor drive control system including the motor drive control device according to the second embodiment of the present invention. The motor drive control device according to the second embodiment mainly differs from the first embodiment described above in that the motor drive control device includes the output units 107A and 107B. Descriptions of the configurations and operations overlapping with those of the first embodiment will be omitted, and different configurations and operations will be described below.

The motor drive control system 1 shown in FIGS. 4 and 5 includes motor drive control devices 100A and 100B. 4 and 5, the motor drive control system 1 including two motor drive control devices 100A and 100B is illustrated, but the number of motor drive control devices included in the motor drive control system 1 is three or more. It may be.

The external device 200 is connected to the motor drive control devices 100A and 100B and receives the output signals OSA and OSB. The external device 200 may be any device capable of receiving the output signals OSA and OSB from the motor drive control devices 100A and 100B. For example, the external device 200 is a host controller device of the motor drive control devices 100A and 100B. Examples of the output signals OSA and OSB include analog signals, digital signals, half-duplex communication or full-duplex communication protocols, and the like. The external device 200 may not only receive the output signals OSA and OSB output from the motor drive control system 1, but also output a drive command to the motor drive control system 1.

Motor drive control device 100A corresponds to motor drive control device 100 shown in FIG. The motor drive control device 100A includes an output unit 107A. The output unit 107A can output the output signal OSA to at least one of the external device 200 and the motor drive control device 100B connected to the motor drive control device 100A. The sensor communication unit 106A has the same configuration as the sensor communication unit 106 of the first embodiment, determines the sensor type, and selects either the drive command DIAA or the drive command DIBA based on the determined sensor type. A selection signal DSIA indicating whether to perform is generated and output to the switching unit 103A. In the example shown in FIG. 4, the sensor communication unit 106A outputs to the switching unit 103A, as the selection signal DSIA, a signal indicating that the drive command DIAA output from the sensor-equipped control unit 101A is selected. Further, the sensor communication unit 106A outputs the information received from the sensor or the like as the sensor input information SIIA to the sensor presence control unit 101A, the output unit 107A, and the processor 105A. In the example shown in FIG. 4, the sensor communication unit 106A outputs the motion detection value MDV input from the sensor 400 as the sensor input information SIIA.

Motor drive control device 100B corresponds to motor drive control device 100 shown in FIG. The motor drive control device 100B includes an output unit 107B. The output unit 107B can output an output signal OSB to the external device 200 connected to the motor drive control device 100B and the motor drive control device 100A. The sensor communication unit 106B has the same configuration as the sensor communication unit 106 of the first embodiment, determines the sensor type, and selects either the drive command DIAB or the drive command DIBB based on the determined sensor type. A selection signal DSIB indicating whether to perform is generated and output to the switching unit 103A. In the example illustrated in FIG. 4, the sensor communication unit 106B outputs, as the selection signal DSIB, a signal indicating that the drive command DIBB is selected to the switching unit 103B. Further, the sensor communication unit 106B outputs the information received from the sensor or the like as the sensor input information SIIB to the sensor presence control unit 101B, the output unit 107B, and the processor 105B. In the example shown in FIG. 4, the sensor communication unit 106B outputs the temperature information TI input from the temperature sensor 500 as sensor input information SIIB.

In the motor drive control devices 100A and 100B, the switching units 103A and 103B select the drive commands DIBA and DIBB to be output based on the selection signals DSIA and DSIB input from the sensor communication units 106A and 106B, respectively. Temperature information TI from a sensor other than 400, for example, a temperature sensor 500 can be input to the motor drive control devices 100A and 100B.

In FIG. 4, the switching unit 103A of the motor drive control device 100A selects the drive command DIAA output by the sensor-equipped control unit 101A, and the switching unit 103B of the motor drive control device 100B selects the drive command DIBB output by the sensorless control unit 102B. A case where the temperature sensor 500 is selected and the entire temperature of the motor drive control system 1 is measured will be exemplified. In this case, the motor drive control device 100B transmits the temperature information of the entire temperature of the motor drive control system 1 acquired by the temperature sensor 500 to the external device 200 or the motor drive control device 100A via the output unit 107B. The temperature information can be shared, and the external device 200 can manage the temperature information of the entire motor drive control system 1.

In FIG. 5, the switching unit 103A of the motor drive control device 100A selects the drive command DIAA output by the control unit 101A with sensor, and the switching unit 103B of the motor drive control device 100B selects the drive command DIBB output by the sensorless control unit 102B. A case where the linear motion machine 600 such as a ball screw is selected and connected to the motor 300A and the linear motion scale 700 for measuring the motion of the linear motion machine 600 is installed in the linear motion machine 600 will be exemplified. In this case, the detection information DIX from the linear motion scale 700 is input to the sensor communication unit 106B. The sensor communication unit 106B determines, as the selection signal DSIB, that the type of the sensor is the direct-acting scale, and outputs to the switching unit 103B a signal indicating that the drive command DIBB is selected based on the determination result. As a result, the switching unit 103B selects the drive command DIBB output by the sensorless control unit 102B and outputs it to the power supply unit 104B. Further, the sensor communication unit 106B outputs the detection information DIX as the sensor input information SIIB to the sensor presence control unit 101B, the output unit 107B, and the processor 105B. The output unit 107B receives the detection information DIX as the sensor information SIIB and transmits the detection information DIX as the output signal OSB to the motor drive control device 100A, whereby the detection information DIX from the linear scale 700 is controlled in the control of the motor 300A. The linear motion machine 600 can be utilized, and it is possible to realize highly accurate linear motion of the linear motion machine 600.

According to the present embodiment, the switching unit 103B of the motor drive control device 100B selects the drive command DIBB output from the sensorless control unit 102B based on the selection signal DSIB to control the motor 300B, and the motor drive control device 100B. By connecting a sensor other than the sensor having the same function as the sensor 400, for example, the temperature sensor 500, to the sensor communication unit 106B of 100B, the temperature information TI of the temperature sensor 500 is transmitted to the external device 200 and the motor drive control device 100A. It becomes possible to share. As a result, the number of parts of the motor drive control system 1 is reduced as compared with the case where a device other than the motor drive control devices 100A and 100B and which acquires other sensor information is added to the motor drive control system 1. It becomes possible to do.

According to the present embodiment, when the distance between external device 200 and temperature sensor 500 is long, temperature sensor 500 is connected to motor drive control device 100B, and motor drive control device 100B transmits sensor input information SIIB to external device 200. By outputting, it becomes possible to shorten the length of the wiring taken out from the temperature sensor 500. The shorter the wiring, the easier it is to route and the less likely the wire will break.

Embodiment 3.
In the first and second embodiments described above, various sensors are connected to the sensor communication unit 106 of the motor drive control device 100. The same communication protocol as the sensor 400 or a sensor that outputs a signal may be connected, or a communication protocol different from the sensor 400 or a sensor that outputs a signal may be connected. Basically, when a sensor that outputs a different communication protocol or a signal is connected, the communication protocol and the signal of the sensor communication unit 106 are manually switched by a command from the external device 200 or an engineering tool of a personal computer. Is possible.

FIG. 6 is a flowchart of communication protocol determination processing executed by the sensor communication unit according to the third embodiment of the present invention. First, the sensor communication unit 106 transmits a request signal to the connected sensor (step S11), and when a response signal which can be analyzed is not received within a certain fixed time (No in step S12). , And automatically changes to another communication protocol (step S13). When the response signal which can be analyzed is received within a certain period of time by repeating the processing from step S11 to step S13 (Yes in step S12), the change of the communication protocol is stopped and the communication protocol is fixed ( Step S14). This process is executed when the power of the motor drive control device 100 is turned on or when a sensor is connected to the sensor communication unit 106.

According to the communication protocol determination process shown in FIG. 6, since various sensors can be connected to the sensor communication unit 106 without making complicated settings, it is possible to reduce the time required for setting the motor drive control device 100. ..

Fourth Embodiment
In Embodiments 1 and 2 described above, the switching unit 103 of the motor drive control device 100 selects one of the drive command DIA output by the sensor-equipped control unit 101 and the drive command DIB output by the sensorless control unit 102. However, when the drive command DIB output by the sensorless control unit 102 is selected, a sensor other than the sensor 400 can be connected to the sensor communication unit 106. In the first and second embodiments, an example has been described in which the sensor communication unit 106 determines the sensor type and generates a selection signal based on the determination result. In the present embodiment, the switching unit 103 selects the drive signal to be output to the power supply unit 104 based on the information input from the sensor communication unit 106. Specifically, in the present embodiment, it is automatically determined whether the sensor communication unit 106 is connected to the sensor 400 or the sensor communication unit 106 is connected to a sensor other than the sensor 400 by the following process. To do.

FIG. 7 is a flowchart of a drive command selection process executed by the motor drive control device according to the fourth embodiment of the present invention. When the communication protocol of the sensor 400 and the communication protocol of the sensor other than the sensor 400 are different, the sensor communication unit 106 transmits a request signal to the connected sensor by the communication protocol of the sensor 400 (step S21). ), if a response signal that can be analyzed is not received within a certain period of time (step S22), the communication protocol is automatically changed to another communication protocol (step S23), and it is determined that the response signal cannot be received by the switching unit 103. To notify. Upon receiving this notification, the switching unit 103 selects and outputs the drive command DIB output by the sensorless control unit 102 (step S24).

FIG. 8 is a flowchart of a drive command selection process executed by the motor drive control device according to the fourth embodiment of the present invention. When there is a possibility that the communication protocol of the sensor 400 and the communication protocol of the sensor other than the sensor 400 are the same, after the communication protocol of the sensor communication unit 106 is determined, first, the sensor input information at that point The SII is acquired and stored (step S31). At the time of step S31, electric power is not output from the power supply unit 104 to the motor 300. The sensor input information SII acquired at the time of step S31 corresponds to the first sensor input information. After that, electric power is supplied from the power supply unit 104 to the motor 300 so as to move the motor 300 in an arbitrary direction, and the motor 300 is minutely rotated (step S32). The sensor input information SII at the time when the motor 300 is rotated is acquired (step S33). The sensor input information SII acquired in step S33 corresponds to the second sensor input information. The switching unit 103 compares the data fields of the sensor input information SII acquired in step S31 and the sensor input information SII acquired in step S33, and if there is a change in the sensor input information SII (Yes in step S34). It is determined that the connected sensor is the sensor 400, and the drive command DIA output from the sensor-present control unit 101 is selected (step S35). When there is no change in the sensor input information SII (No in step S34), the switching unit 103 determines that the connected sensor is a sensor other than the sensor 400, and the drive output by the sensorless control unit 102. The command DIB is selected (step S36).

According to the drive command selection processing shown in FIGS. 7 and 8, it is possible to cause the switching unit 103 to make a correct selection without making complicated settings in the switching unit 103.

The configurations described in the above embodiments are examples of the content of the present invention, and can be combined with other known techniques, and the configurations of the configurations are not departing from the scope of the present invention. It is also possible to omit or change parts.

1 motor drive control system, 100, 100A, 100B motor drive control device, 101, 101A, 101B sensor control unit, 102, 102A, 102B sensorless control unit, 103, 103A, 103B switching unit, 104, 104A, 104B power supply Section, 105, 105A, 105B processor, 106, 106A, 106B sensor communication section, 107A, 107B output section, 200 external device, 300, 300A, 300B motor, 400 sensor, 500 temperature sensor, 600 direct acting machine, 700 direct acting Scale, 1061 sensor transmission/reception unit, 1062 sensor type determination unit.

In order to solve the above-mentioned problems and achieve the object, the motor drive control device for generating electric power to be applied to the motor according to the present invention can receive information from a connected external sensor , and the received information the comprises a ruse capacitors communication unit to output as the sensor input information. The motor drive control device, the first based on the sensor input information to the sensor communication unit that has received the operation detection values from the operation command and the sensor relative to the operating position or the operating speed of the motor represents the operation position or operation speed of the motor output A sensor-equipped control unit that generates and outputs a drive command and a sensorless control unit that generates and outputs a second drive command based on the operation command without using sensor input information are provided. The motor drive control device selects one of the first drive command and the second drive command and outputs the selected drive command as a motor drive command, and a motor drive command output from the switch unit. And a power supply unit that generates power to be applied to the motor. When the switching unit outputs the second drive command as the motor drive command, the sensor communication unit can accept information other than the motion detection value, and outputs the accepted information as sensor input information.

Claims (6)

A motor drive control device for generating electric power to be applied to a motor,
A sensor communication unit configured to be able to receive an input of a motion detection value indicating a motion position or a motion speed of the motor and configured to include one encoder reception circuit that outputs the received motion detection value as sensor input information;
A control unit with a sensor that generates and outputs a first drive command based on an operation command for the operating position or operating speed of the motor and the sensor input information;
A sensorless control unit that generates and outputs a second drive command based on the operation command without using the sensor input information;
A switching unit that selects one of the first drive command and the second drive command and outputs the selected drive command as the motor drive command;
A power supply unit that generates power to be applied to the motor based on a drive command for the motor output from the switching unit,
When the switching unit outputs the second drive command as a drive command for the motor, the sensor communication unit can accept an input of a signal other than the operation detection value, and the accepted signal is the sensor input. A motor drive control device characterized by outputting as information. The sensor communication unit generates a selection signal indicating which of the first drive command and the second drive command is to be selected, based on the received sensor input information, and switches the selection signal to the switching signal. Output to
The motor drive control device according to claim 1, wherein the switching unit selects one of the first drive command and the second drive command based on the selection signal. The motor drive control device according to claim 1 or 2, further comprising an output unit that outputs the sensor input information to at least one of an external device and another motor drive control device. The sensor communication unit transmits a request signal requesting the transmission of a response signal to the connected sensor, and changes the communication protocol depending on the presence or absence of a response signal that can be analyzed for the transmitted request signal. The motor drive control device according to any one of claims 1 to 3, characterized in that. The sensor communication unit transmits a request signal requesting the transmission of a response signal to the connected sensor,
The switching unit selects one of the first drive command and the second drive command depending on the presence or absence of a response signal that can be analyzed with respect to the request signal transmitted by the sensor communication unit. The motor drive control device according to claim 1, wherein the motor drive control device is a motor drive control device. The switching unit includes first sensor input information that is the operation detection value that is input to the sensor communication unit in a state in which the power supplied to the motor by the power supply unit is not output, and the power supply unit outputs to the motor. One of the first drive command and the second drive command based on the second sensor input information which is the operation detection value input to the sensor communication unit in the state of outputting the applied power. The motor drive control device according to claim 1, wherein the motor drive control device is selected.

Images