CN110850900A - Positioning motor control unit and positioning motor control system - Google Patents
Positioning motor control unit and positioning motor control system Download PDFInfo
- Publication number
- CN110850900A CN110850900A CN201810948247.4A CN201810948247A CN110850900A CN 110850900 A CN110850900 A CN 110850900A CN 201810948247 A CN201810948247 A CN 201810948247A CN 110850900 A CN110850900 A CN 110850900A
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- China
- Prior art keywords
- motor control
- control unit
- positioning motor
- positioning
- motor
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/20—Control of position or direction using feedback using a digital comparing device
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Position Or Direction (AREA)
Abstract
Provided are a positioning motor control unit and a positioning motor control system, wherein it is not necessary to pull a signal cable at the installation site of the motor control unit. A positioning motor control unit is provided with: an electric motor; a wireless communication unit that receives a command signal indicating a target position; and a control unit that controls a position of the motor based on the command signal received by the wireless communication unit.
Description
Technical Field
The invention relates to a positioning motor control unit and a positioning motor control system.
Background
Conventionally, in a product flow line section of a packaging machine, a box making machine, a food manufacturing apparatus, or the like, positioning devices for moving a product guide section, a printing device, various detectors, and the like are used in each section. These positioning devices drive a feed screw mainly by manually operating a steering wheel, and move and position a guide portion, a printing device, various detectors, and the like to desired positions.
Conventionally, positioning is mainly performed by manual operation, and therefore, each time the position is changed, an operator determines a position to be positioned using a label with a scale or a machine type positioning instrument (japanese patent laid-open No. 2016 218006). In addition, there are many positions for positioning each apparatus, and it is necessary to position a plurality of positions according to products to be produced of different sizes and types.
To alleviate the use of these manual positioning tasks, consider the following: instead of the steering wheel that is manually operated, the feed screw is driven by a motor that is position-controlled, thereby positioning the guide, the printing device, various detectors, and the like. Such a motor is expected to form a unit together with a control unit for position control, and to be used as a motor control unit.
Disclosure of Invention
Problems to be solved by the invention
However, when the positioning control is performed on the motor, it is necessary to transmit a command signal indicating the target position from the controller to a control unit for performing the position control of the motor through a signal cable in addition to a power cable for supplying power to the motor. Further, when a plurality of motor control units are arranged, there is a problem that the number of signal cables to be pulled increases.
The invention aims to provide a positioning motor control unit and a positioning motor control system which do not need to pull a signal cable at the installation place of the motor control unit.
Means for solving the problems
In order to solve the above problem, a positioning motor control unit according to the present invention includes: an electric motor; a wireless communication unit that receives a command signal indicating a target position; and a control unit that controls a position of the motor based on the command signal received by the wireless communication unit.
Further, a positioning motor control system according to the present invention includes: a command signal transmitting device that wirelessly transmits a command signal including a target position; and the motor control unit.
Effects of the invention
According to the present invention, it is not necessary to pull the signal cable at the installation place of the motor control unit.
Drawings
FIG. 1 is a schematic diagram of a positioning motor control system according to one embodiment.
FIG. 2 is a cross-sectional view of an embodiment of a positioning motor control unit.
Detailed Description
A positioning motor control system and a motor control unit according to an embodiment of the present invention will be described below with reference to fig. 1 and 2.
As shown in fig. 1, the positioning motor control system 10 includes a controller 20 and a plurality of positioning motor control units 30A to 30D (hereinafter referred to as motor control units). The motor control units 30A to 30D are units provided in a factory production line, for example, for performing positioning when changing the arrangement of a guide portion of a product, a printing device, various detectors, and the like.
Since the motor control units 30A to 30D have the same configuration, the motor control unit 30A will be described below. In the motor control units 30B to 30D of fig. 1 and the ball screw device attached to the motor control units, the same components as those of the motor control unit 30A and the ball screw device 40 attached to the motor control unit 30A described below are denoted by the same reference numerals.
As shown in fig. 2, the motor control unit 30A accommodates a motor 32 and a controller 33 for controlling the motor 32 in a case 31. Specifically, the control unit 33 is housed in the upper portion 35 of the housing 31, and the motor 32 is housed in the lower portion 34.
The motor 32 is a geared motor, and has a motor main body 36 and a reduction gear 37. The drive shaft 32a of the motor 32 (i.e., the output shaft of the reduction gear 37) protrudes outside the housing 31, and is coupled to the screw shaft 41 of the ball screw device 40 via the reverse input blocking clutch 38. The reverse input blocking clutch 38 is configured to: the input of the torque generated by the forward and reverse rotations of the motor 32 is allowed to be transmitted to the screw shaft 41, and the reverse input from the screw shaft 41 is prevented.
The screw shaft 41 is rotatably supported between the pair of support members 42. The ball screw device 40 includes a nut, not shown, attached to the screw shaft 41, and the base member 43 is fixed to the nut. When the screw shaft 41 rotates forward and backward, the base member 43 fixed to the nut is guided and movable between the support members 42 by a pair of guide shafts 44 extending parallel to the screw shaft 41. The base member 43 is equipped with a product guide, a printing device, various detectors, and the like.
The motor main body 36 includes a rotary encoder not shown. The rotary encoder detects a rotation angle of the motor body 36 and outputs a detection signal (rotation angle) to the control unit 33. The control unit 33 performs position control so as to eliminate a deviation between the current position calculated based on the detection signal and the instructed target position. When the deviation is eliminated and the target position is reached, the control unit 33 stops the rotational driving of the motor main body 36 and then performs short-circuit braking.
As shown in fig. 1, an origin detector 48 and a limit detector 49 are disposed between the support members 42. The origin detector 48 detects whether the base member 43 is located at the origin. In addition, the limit detector 49 detects whether or not the base member 43 has moved to the boundary of the range of allowable movement.
As shown in fig. 2, the signal lines of the origin detector 48 and the limit detector 49 are connected to the control unit 33 through a port 50 provided on a side wall of the lower portion 34 of the housing 31. In fig. 2, a connector 51 for connecting a power supply cable for supplying power to the motor main body 36 and the control unit 33 is provided in the side wall so as to be aligned with the port 50.
A wireless communication unit 47 is disposed and fixed in the housing 31, and the wireless communication unit 47 is connected to the antenna 46. The wireless communication unit 47 includes, for example, a wireless module such as a ZigBee module, a Wi-Fi module, or a Wi-sun module, and outputs a reception signal received by the antenna 46 to the control unit 33.
As shown in fig. 1, the controller 20 includes a CPU (central processing unit) 21, a communication device 22, and an antenna 23. The controller 20 corresponds to a command signal transmitting device.
The controller 20 is provided with an input device not shown. The operator can input the identification code and the target position of the specific motor control unit by using the input device, and when these data are input, the CPU21 can transmit the identification code and the target position as command signals by using the communication device 22 and the antenna 23.
(effects of the embodiment)
The operation of the positioning motor control system and the motor control unit configured as described above will be described.
When the identification code of a specific motor control unit and the target position are transmitted as command signals from the controller 20 via the communication device 22 and the antenna 23, the motor control units 30A to 30D receive the command signals via the antenna 46 and the wireless communication unit 47. The control unit 33 of each motor control unit performs position control to the received target position only when the received command signal (i.e., the received signal) includes the identification code for identifying the own unit.
The control unit 33 performs position control of the motor 32 so as to eliminate a deviation between a current position calculated based on a detection signal of a rotary encoder, not shown, and a target position instructed. The motor 32 is rotationally driven by the position control, and moves the base member 43 to a target position, thereby changing the arrangement of a guide portion of a product mounted on the base member 43, a printing apparatus, various detectors, and the like.
The present embodiment has the following features.
(1) The positioning motor control unit of the present embodiment includes: a motor 32; a wireless communication unit 47 that receives a command signal indicating a target position; and a control unit 33 for controlling the position of the motor 32 based on the command signal received by the wireless communication unit 47.
As a result, according to the present embodiment, there is an effect that it is not necessary to pull the signal cable at the installation place of the motor control unit.
Further, since it is not necessary to perform manual operation, there is an effect that it is possible to save labor when changing the arrangement of the guide portion of the product, the printing apparatus, various detectors, and the like.
In addition, although installation and maintenance of the signal cable are required when the signal cable is pulled, in the present embodiment, the signal cable is wireless, and therefore, such a signal cable is not provided, and the environment of the factory can be improved. In addition, since the operator does not have to go from the standby place to the manual operation place, the efficiency of the work can be achieved.
(2) In the present embodiment, the motor 32, the wireless communication unit 47, and the control unit 33 are housed in a single case 31. As a result, the motor control unit can be easily installed.
(3) The positioning motor control system of the present embodiment includes: a controller 20 (command signal transmitting device) that wirelessly transmits a command signal including a target position; and a positioning motor control unit. As a result, according to the present embodiment, the effect (1) can be easily achieved.
(4) The positioning motor control system of the present embodiment includes a plurality of positioning motor control units. As a result, according to the present embodiment, the positioning of the plurality of positioning motor control units can be performed individually or simultaneously as necessary.
The present invention is not limited to the above embodiment, and may be configured as follows.
In the positioning motor control system 10, a plurality of (four) positioning motor control units are provided, but one positioning motor control unit may be provided. The motor may be a stepping motor.
Claims (4)
1. A positioning motor control unit is provided with:
an electric motor;
a wireless communication unit that receives a command signal indicating a target position; and
and a control unit that controls a position of the motor based on the command signal received by the wireless communication unit.
2. The positioning motor control unit of claim 1, wherein the motor, the wireless communication portion, and the control portion are housed in a single housing.
3. A positioning motor control system is provided with:
a command signal transmitting device that wirelessly transmits a command signal including a target position; and
the positioning motor control unit of claim 1 or claim 2.
4. The positioning motor control system according to claim 3, wherein a plurality of the positioning motor control units are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810948247.4A CN110850900A (en) | 2018-08-20 | 2018-08-20 | Positioning motor control unit and positioning motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810948247.4A CN110850900A (en) | 2018-08-20 | 2018-08-20 | Positioning motor control unit and positioning motor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110850900A true CN110850900A (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810948247.4A Pending CN110850900A (en) | 2018-08-20 | 2018-08-20 | Positioning motor control unit and positioning motor control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN110850900A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1812880A (en) * | 2003-12-12 | 2006-08-02 | 株式会社放电精密加工研究所 | Press |
| CN101276219A (en) * | 2007-03-27 | 2008-10-01 | 发那科株式会社 | Motor control system |
| CN103370664A (en) * | 2011-02-21 | 2013-10-23 | 三菱电机株式会社 | Electric motor control system and communication method |
-
2018
- 2018-08-20 CN CN201810948247.4A patent/CN110850900A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1812880A (en) * | 2003-12-12 | 2006-08-02 | 株式会社放电精密加工研究所 | Press |
| CN101276219A (en) * | 2007-03-27 | 2008-10-01 | 发那科株式会社 | Motor control system |
| CN103370664A (en) * | 2011-02-21 | 2013-10-23 | 三菱电机株式会社 | Electric motor control system and communication method |
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