CN201860288U - Non-speed sensor speed-adjusting device of DC motor - Google Patents
Non-speed sensor speed-adjusting device of DC motor Download PDFInfo
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- CN201860288U CN201860288U CN201020561187XU CN201020561187U CN201860288U CN 201860288 U CN201860288 U CN 201860288U CN 201020561187X U CN201020561187X U CN 201020561187XU CN 201020561187 U CN201020561187 U CN 201020561187U CN 201860288 U CN201860288 U CN 201860288U
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Abstract
The utility model relates to a non-speed sensor speed-adjusting device of a DC motor, which is applicable to a rotary armature type DC motor and comprises a controller, wherein the input end of the controller is connected with an armature circuit voltage and current sensor, an excitation circuit voltage and current sensor and a full digital keyboard respectively, and the output end of the controller is connected with an armature DC power supply and an excitation DC power supply respectively; the armature circuit voltage and current sensor is connected with the armature DC power supply; the excitation circuit voltage and current sensor is connected with the excitation DC power supply; and the armature circuit voltage and current sensor and the excitation circuit voltage and current sensor send voltage and current signals collected separately to the controller. The non-speed sensor speed-adjusting device of the DC motor does not need a speed sensor, and has simple structure and method and high reliability.
Description
Technical field
The utility model relates to a kind of dc motor drive, is particularly useful for the direct current machine Speedless sensor speed regulating device that the revolving-armature type DC motor is used.
Background technology
In the direct current machine double closed-loop control system, the closed-loop control link of spinner velocity need detect the rotating speed of motor signal.At present, the control system of DC motor control system is many by the dc excitation power of not controlling, the armature power supply of micro core processor control, and direct current machine and rotating speed, voltage-current sensor are formed.Dc excitation power is connected with the motor excitation winding, is connected with the armature winding by micro core processor control armature power supply, and speed probe is connected with motor coaxle.The micro core processor receives rotating speed, voltage and current signal, the armature power supply is controlled, and then the operation of control motor, this method of testing is based on the control system of velocity transducer, need install mechanical speed transducers such as photoelectric code disk, tachogenerator additional and carry out the motor speed detection on direct current machine, and feedback tach signal, this method need be added speed measuring device, has not only improved system cost, and difficulty is installed.
Realize that high performance DC MOTOR CONTROL must detect in real time to armature resistance in circuit value.Have only and detect the armature resistance in circuit accurately, just can accurately calculate the actual speed of motor.Detecting armature resistance in circuit value is to realize the key of direct current machine Speedless sensor control.Direct current machine inner armature resistance in circuit value is along with the operating mode of motor operation constantly changes, and its temperature with motor internal is directly related.Usually detect the motor internal temperature and need install special transducer additional, not only improved system cost and increased the complexity of system again, and increased the maintenance workload of system.
Summary of the invention
The purpose of this utility model provide a kind of structure and method simple, be easy to safeguard, direct current machine Speedless sensor speed regulating device that cost is low.
For achieving the above object, direct current machine Speedless sensor speed regulating device of the present utility model comprise: comprise controller, the input of controller is connected with armature circuit voltage and current transducer respectively, energized circuit voltage and current transducer and full digital keyboard, its output is connected with armature DC power supply and excitation dc power respectively, armature circuit voltage and current transducer is connected with the armature DC power supply, energized circuit voltage and current transducer is connected with excitation dc power, and pivot loop voltage and current sensor and energized circuit voltage and current transducer are with the voltage that collects respectively, current signal is sent to controller.
Described controller comprises low-pass filter circuit, digital sample circuit, micro core processor and the Schmidt trigger circuit that is linked in sequence; Described micro core processor model is TMS320F2812; The model of described armature circuit voltage and current transducer is the Hall-type voltage-current sensor; The model of energized circuit voltage and current transducer is the Hall-type voltage-current sensor.
Beneficial effect: the utility model does not have mechanical velocity transducer, utilize the resistance value of winding and the linear and electromagnetic relationship of direct current machine of temperature of winding itself own, estimate spinner velocity indirectly, control effectively, omitted velocity transducer for the DC motor closed loop speed control system, not only has the accuracy of detection height, the characteristics of good reliability, and simple in structure, operation and easy to maintenance, cost is low, has practicality widely.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present utility model.
Fig. 2 is a controller architecture schematic diagram of the present utility model.
Among the figure: 1-armature DC power supply, 2-direct current machine armature winding, 3-excitation of direct current generator winding, 4-excitation dc power, 5-armature circuit voltage and current transducer, 6-energized circuit voltage and current transducer, 7-controller, 8-full digital keyboard.
Embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
As shown in the figure, direct current machine Speedless sensor speed regulating device of the present utility model comprise armature circuit voltage and current transducer 5, energized circuit voltage and current transducer 6, controller 7 and full digital keyboard 8; Controller 7 comprises low-pass filter circuit, digital sample circuit, micro core processor and the Schmidt trigger circuit that is linked in sequence, and wherein the micro core processor model is the TMS320F2812 of TI company production.The input of low-pass filter circuit is connected with energized circuit voltage and current transducer 6 with armature circuit voltage and current transducer 5 respectively in the controller 7, and full digital keyboard 8 is connected with micro core processor in the controller 7, in order to the input reference velocity; Armature circuit voltage and current transducer 5 is connected with excitation dc power 4 with armature DC power supply 1 respectively with energized circuit voltage and current transducer 6, the Schmidt trigger circuit output of controller 7 is connected with armature DC power supply 1 and excitation dc power 4 respectively, armature DC power supply 1 directly is connected with direct current machine armature winding 2, and excitation dc power 4 directly is connected with excitation of direct current generator winding 3.Armature circuit voltage and current transducer 5 is connected with armature DC power supply 1, energized circuit voltage and current transducer 6 is connected with excitation dc power 4, and armature circuit voltage and current transducer 5 is sent to controller 7 with energized circuit voltage and current transducer 6 with voltage, the current signal that collects respectively.The model of armature circuit voltage and current transducer 5 is the Hall-type voltage-current sensor; The model of energized circuit voltage and current transducer 6 is the Hall-type voltage-current sensor.
The operation principle and the course of work: on the armature DC power supply 1 of direct current machine and excitation dc power 4, armature circuit voltage and current transducer 5 and energized circuit voltage and current transducer 6 are installed respectively, respectively the voltage and current numerical value of armature DC power supply 1 and excitation dc power 4 is sampled by armature circuit voltage and current transducer 5 and energized circuit voltage and current transducer 6, and sample information is sent in the controller 7; 7 pairs of sample information of controller are carried out calculation process, obtain the rotating speed number of direct current machine, and rotating speed number and setting speed revolution value are compared; If the rotating speed number is inconsistent with setting revolution value, then controller 7 calculate this moment armature DC power supply 1 and excitation dc power 4 should put on the voltage swing of motor, to armature DC power supply 1 and excitation dc power 4 output control signals, change the armature voltage and the exciting voltage of motor, make the rotating speed of motor number change, reach consistent with setting revolution value.
Claims (4)
1. direct current machine Speedless sensor speed regulating device, it is characterized in that: it comprises controller (7), the input of controller (7) is connected with armature circuit voltage and current transducer (5) respectively, energized circuit voltage and current transducer (6) and full digital keyboard (8), its output is connected with armature DC power supply (1) and excitation dc power (4) respectively, armature circuit voltage and current transducer (5) is connected with armature DC power supply (1), energized circuit voltage and current transducer (6) is connected with excitation dc power (4), and pivot loop voltage and current sensor (5) and energized circuit voltage and current transducer (6) are with the voltage that collects respectively, current signal is sent to controller (7).
2. direct current machine Speedless sensor speed regulating device according to claim 1 is characterized in that: described controller (7) comprises low-pass filter circuit, digital sample circuit, micro core processor and the Schmidt trigger circuit that is linked in sequence.
3. direct current machine Speedless sensor speed regulating device according to claim 2 is characterized in that: described micro core processor model is TMS320F2812.
4. direct current machine Speedless sensor speed regulating device according to claim 1 is characterized in that: the model of described armature circuit voltage and current transducer (5) is the Hall-type voltage-current sensor; The model of energized circuit voltage and current transducer (6) is the Hall-type voltage-current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020561187XU CN201860288U (en) | 2010-09-30 | 2010-09-30 | Non-speed sensor speed-adjusting device of DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020561187XU CN201860288U (en) | 2010-09-30 | 2010-09-30 | Non-speed sensor speed-adjusting device of DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201860288U true CN201860288U (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020561187XU Expired - Fee Related CN201860288U (en) | 2010-09-30 | 2010-09-30 | Non-speed sensor speed-adjusting device of DC motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN201860288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969290A (en) * | 2010-09-30 | 2011-02-09 | 中国矿业大学 | Speed sensor-free speed regulation device and method for DC motor |
| CN107026588A (en) * | 2017-05-27 | 2017-08-08 | 北京无线电测量研究所 | A kind of motor driver, the control system and its control method of release rate fluctuation |
| CN111865154A (en) * | 2019-04-24 | 2020-10-30 | 深圳市朗科智能电气股份有限公司 | Speed regulating circuit and method for direct current motor |
-
2010
- 2010-09-30 CN CN201020561187XU patent/CN201860288U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969290A (en) * | 2010-09-30 | 2011-02-09 | 中国矿业大学 | Speed sensor-free speed regulation device and method for DC motor |
| CN107026588A (en) * | 2017-05-27 | 2017-08-08 | 北京无线电测量研究所 | A kind of motor driver, the control system and its control method of release rate fluctuation |
| CN111865154A (en) * | 2019-04-24 | 2020-10-30 | 深圳市朗科智能电气股份有限公司 | Speed regulating circuit and method for direct current motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20120930 |