CN203708164U - Chopper variable-value control device - Google Patents
Chopper variable-value control device Download PDFInfo
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- CN203708164U CN203708164U CN201320774522.8U CN201320774522U CN203708164U CN 203708164 U CN203708164 U CN 203708164U CN 201320774522 U CN201320774522 U CN 201320774522U CN 203708164 U CN203708164 U CN 203708164U
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- motor
- voltage
- speed
- chopper
- control device
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- Control Of Direct Current Motors (AREA)
Abstract
The utility model discloses a chopper variable-value control device for controlling a motor to rotate at a constant speed. The chopper variable-value control device comprises a t input part for input a set rotating speed to a motor, a voltage source part providing voltage for a motor driver of a motor, an adjusting part for adjusting the voltage, an acquisition part for acquire actual rotating speed of the motor, a display part for displaying the actual rotating speed of the motor, a storage part for storing a value of the set rotating speed and a value of the actual rotating speed, and a control part which is connected with the input part, the voltage source part, the adjusting part, the acquisition part, the display part and the storage part respectively. The acquisition part feeds the actual rotating speed of the motor back to the control part, and the control part controls a voltage summator according to the set rotating speed and the actual rotating speed to adjust voltage of the motor driver, so the rotating speed of the motor is stabilized. The chopper variable-value control device has the advantages of simple structure, low cost, high speed-regulation precision and the good speed-stabilizing effect.
Description
Technical field
The utility model relates to chopper, specifically relates to a kind of for controlling the chopper variate control device of motor constant speed rotary.
Background technology
Along with the fast development of the technology such as microelectric technique, power electronic technology, make to adopt the brshless DC motor of electronics commutation principle work to obtain significant progress.And many small-sized DC Brushless Motor often need more accurate speed control in the time of application, especially, in the occasion of high-speed cruising, the feedback to signal and processing speed require more strict.In this case, the simple theoretic voltage of speed preset is as required controlled motor and can not be met the demands, and motor characteristic is also not in full use, and therefore needs a set of complete system to control the rotation of motor, i.e. chopper.
In the prior art, realizing motor constant speed rotary mainly realizes by frequency control and controllable silicon moving-phase speed control.Frequency control is according to motor speed and the relation that the frequency of working power is directly proportional, and utilizes the on-off action of power semiconductor device to change the frequency of machine operation power supply, thereby reaches the object that changes motor speed.Controllable silicon moving-phase speed control changes motor terminal voltage by the change silicon controlled angle of flow and realizes speed governing, and in the time that the angle of flow is less than 180 °, controllable silicon is in non-fully conducting state, and the angle of flow is less, and voltage is less, and rotating speed is lower.
But in above-mentioned scheme, thyristor speed control can produce a large amount of harmonic waves, High-frequency Interference cannot be eliminated, although and frequency control does not have High-frequency Interference, involve great expense, increased substantially the cost of producing research.So prior art lacks a kind of for controlling the chopper variate control device of motor constant speed rotary.
Utility model content
In order to address the above problem, it is a kind of for controlling the chopper variate control device of motor constant speed rotary that the purpose of this utility model is to provide.
In order to achieve the above object, it is a kind of for controlling the chopper variate control device of motor constant speed rotary that the utility model provides, there is such feature: comprising: input part, for inputting the setting speed of motor, voltage source portion, be used to the motor driver of motor that voltage is provided, adjusting portion, comprise by 2 road DAC and export the voltage adder forming, for regulation voltage, collection portion, comprise the pulse counter by the photoelectric encoder of the synchronized rotation of driven by motor and the output number of pulses of collection photoelectric encoder, display part, for showing in real time the numerical value of the actual speed of motor, storage part, for storing the numerical value of setting speed and the numerical value of actual speed, and control part, respectively with input part, voltage source portion, adjusting portion, collection portion, display part and storage part connect, show the actual speed of motor based on the number of pulses control display part of output, based on the voltage of setting speed and actual speed control voltage adder adjusting motor driver.
In the chopper variate control device providing at the utility model, can also there is such feature: wherein, control part comprises the single-chip microcomputer of controlling voltage adder.
In the chopper variate control device providing at the utility model, can also there is such feature: wherein, display part is the host computer that the digital input amount for showing motor actual speed and voltage adder changes.
In the chopper variate control device providing at the utility model, can also there is such feature: wherein, display part is 8 sections of LED charactrons.
The effect of utility model and effect
According to the utility model related for controlling the chopper variate control device of motor constant speed rotary, the input part that comprises the setting speed for inputting motor, for the motor driver of motor provides the voltage source portion of voltage, for the adjusting portion of regulation voltage, gather the collection portion of motor actual speed, and respectively with input part, voltage source portion, adjusting portion, and the control part that is connected of collection portion, the actual speed of motor is fed back to control part by collection portion, control part regulates the voltage of motor driver based on setting speed and actual speed control voltage adder, thereby stablize the rotating speed of motor.Chopper variate control device in the utility model is simple in structure, and cost is low, and adjusting speed accuracy is high, and speed stabilizing is effective.
Accompanying drawing explanation
Fig. 1 is the block diagram of chopper variate control device in embodiment of the present utility model; And
Fig. 2 is the structured flowchart of chopper variate control device in embodiment of the present utility model.
In figure, 100. chopper variate control device, 1. input part, 2. voltage source portion, 3. adjusting portion, 4. collection portion, 5. display part, 6. storage part, 7. control part, 8. motor, 9. motor driver, 10. band wheels, 11. keyboards, 12. bases, 31. voltage adders, 41. photoelectric encoders, 42. pulse counters, 51.PC machine, 52.LED charactron, 71. single-chip microcomputers.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with embodiment and accompanying drawing, the utility model is specifically addressed.
Embodiment
Fig. 1 is the block diagram of chopper variate control device in embodiment of the present utility model.
As shown in Figure 1, the chopper variate control device 100 in the present embodiment, comprising: input part 1, voltage source portion 2, adjusting portion 3, collection portion 4, display part 5, storage part 6, control part 7.
Adjusting portion 3 comprises by 2 road DAC exports the voltage adder 31 forming, and collection portion 4 comprises photoelectric encoder 41 and pulse counter 42, and control part 7 comprises single-chip microcomputer 71, and display part 5 comprises 51 and 8 sections of LED charactrons 52 of PC.
Control part 7 is connected with input part 1, voltage source portion 2, adjusting portion 3, collection portion 4, display part 5 and storage part 6 respectively, the number of pulses control display part 5 of control part based on output shows the actual speed of motor 8, regulates the voltage of motor driver based on setting speed and actual speed control voltage adder 31.
In the present embodiment, adopt the core of C8051F060 single-chip microcomputer as whole chopper variate control device 100, in calculating in real time and control motor 8 rotating speeds, can also control other peripheral components.Input part 1 adopts the keyboard 11 of 4x4 to be connected the setting speed for inputting motor 8 with the input port of single-chip microcomputer 71.Voltage source portion 2 provides voltage to the motor driver 9 of motor 8, and storage part 6 is for storing the numerical value of setting speed and the numerical value of actual speed.
Motor driver 9 is to realize adjusting to motor 8 rotating speeds by analog voltage, and this analog voltage can obtain by the DA conversion of single-chip microcomputer 71.Be only 2.43V because single-chip microcomputer 71Mei road DA changes the maximum output voltage obtaining according to reference voltage, and motor data handbook points out that motor at least needs the speed governing voltage of 4.5V in the time of High Rotation Speed, so adjusting portion 3 need utilize two-way DAC output to do add circuit composition voltage adder 31 for controlling the voltage of motor driver 9 simultaneously.
Drive the pulse counter 42 of the photoelectric encoder 41 of synchronized rotation and the output pulse of collection photoelectric encoder 41 to form feedback unit by motor 8, in order effectively to reduce range rate error, adopt the photoelectric encoder 41 that resolution is 1000 to test the speed to motor 8, to guarantee to measure in real time the rotating speed of motor 8, to make subsequent control.Display part 5 comprises 48 sections section LED charactrons 52 and PC 51, can show in real time the actual speed of motor 8.
Fig. 2 is the structured flowchart of chopper variate constant-speed control device in embodiment of the present utility model.
As shown in Figure 2, motor driver 9, keyboard 11, voltage adder 31,42,8 sections of LED charactrons 52 of pulse counter and single-chip microcomputer 71 are all arranged on base 12, motor 8 and photoelectric encoder 41 are arranged on the reverse side of base 12, the rotating shaft of motor 8 and photoelectric encoder 41 all runs through base 12 and is set with two belt wheels with wheels 10, between belt wheel, by toothed belt transmission, PC 51 is connected with single-chip microcomputer 71.
When chopper variate control device 100 power-up initializing, the rated speed of motor 8 can be provided, if need to change rated speed, the setting numerical value of motor 8 can be inputted at any time by the keyboard 11 being connected with single-chip microcomputer 71 input ports.In rated speed or setting speed known in the situation that, single-chip microcomputer 71 can be determined according to the relation of the rotating speed of motor 8 and driving voltage the driving voltage of motor 8, because this process realizes by the DA conversion of single-chip microcomputer 71, therefore determine the i.e. digital input amount of definite DAC of output voltage.
Because photoelectric encoder 41 and motor 8 pass through 10 transmissions of band wheels, form identical with two pulley diameters of wheels, therefore after system powers on, motor 8 drives the synchronized rotation of photoelectric encoder 41, and photoelectric encoder 41 changes into a series of pulses by opto-electronic conversion by the geometric displacement amount on motor output shaft and exports.The code-disc and photoelectric encoder 41 coaxial rotatings that in figure, do not show, the U-shaped groove of code-disc process optocoupler in the time rotating, because code-disc used distributes alternately light hole and shadow shield after disk 10 deciles, therefore the rotating speed calculating according to the output pulse of optocoupler is 5 times of motor 8 rotating speeds, thereby realize frequency multiplication, both can make optocoupler in the time of motor 8 low-speed running, just can export the pulse of High Rotation Speed, the precision that can guarantee again to export pulse can be because of motor 8 high-speed rotary then is reduced.Pulse counter 42 reads in real time the output number of pulses of photoelectric encoder 41 and feeds back to single-chip microcomputer 71, single-chip microcomputer 71 was processed the number of pulses of feedback every one period of unit interval, thereby the actual speed that calculates motor 8 sends 8 sections of LED charactrons 52 to be shown, the digital input amount of the actual speed of motor 8 and voltage adder 31 changes is communicated by letter and is shown by PC 51 by RS232.Meanwhile, single-chip microcomputer 71 regulates the digital input amount of DAC to regulate the voltage of motor driver 9 according to the difference of actual speed and setting speed, thereby the rotating speed of motor 8 is remained on to stable state.
The effect of embodiment and effect
Provide according to the present embodiment for controlling the chopper variate control device of motor constant speed rotary, the input part that comprises the setting speed for inputting motor, for the motor driver of motor provides the voltage source portion of voltage, for the adjusting portion of regulation voltage, gather the collection portion of motor actual speed, and respectively with input part, voltage source portion, adjusting portion, and the control part of collection portion connection, the actual speed of motor is fed back to control part by collection portion, control part regulates the voltage of motor driver based on setting speed and actual speed control voltage adder, thereby stablize the rotating speed of motor.Chopper variate control device in the utility model is simple in structure, and cost is low, and adjusting speed accuracy is high, and speed stabilizing is effective.
Photoelectric encoder is connected by Timing Belt with motor, and the two synchronized rotation utilizes high-resolution photoelectric encoder to test the speed, and effectively reduces range rate error.
In the present embodiment, adopt Timing Belt to realize the transmission between motor and photoelectric encoder, effectively filter out the measure error that part causes because of motor vibrating, provide basic condition for further improving certainty of measurement.
In the present embodiment, introduce and the code-disc of photoelectric encoder coaxial rotating, under the convenient prerequisite guaranteeing system accuracy, realize the frequency multiplication of motor speed, effectively reduced the error of introducing because shake is violent when motor runs up.
The rated speed that input part in the present embodiment can arrange arbitrarily by keyboard motor, realized stepless speed regulation, improved the deficiency that tap speed-regulating can only gear speed governing.
In the present embodiment, the speed regulation process of motor can be communicated by letter and be shown at host computer by RS232, make user's debug process of observing system more intuitively.
Certainly the related chopper variate constant-speed control device of the utility model is not merely defined in structure in the present embodiment.
Claims (4)
1. a chopper variate control device, for controlling motor constant speed rotary, is characterized in that, comprising:
Input part, for inputting the setting speed of described motor;
Voltage source portion, is used to the motor driver of described motor that voltage is provided;
Adjusting portion, comprises by 2 road DAC and exports the voltage adder forming, for regulating described voltage;
Collection portion, comprises the pulse counter by the photoelectric encoder of the synchronized rotation of described driven by motor and the output number of pulses of the described photoelectric encoder of collection;
Display part, for showing in real time the numerical value of the actual speed of described motor;
Storage part, for storing the numerical value of described setting speed and the numerical value of described actual speed; And
Control part, be connected with described input part, described voltage source portion, described adjusting portion, described collection portion, described display part and described storage part respectively, described in number of pulses control based on described output, display part shows the actual speed of motor, regulates the voltage of described motor driver based on voltage adder described in described setting speed and described actual speed control.
2. chopper variate control device according to claim 1, is characterized in that:
Wherein, described control part comprises the single-chip microcomputer of controlling described voltage adder.
3. chopper variate control device according to claim 1, is characterized in that:
Wherein, described display part is the PC that the digital input amount for showing described motor actual speed and described voltage adder changes.
4. chopper variate control device according to claim 1, is characterized in that:
Wherein, described display part is 8 sections of LED charactrons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320774522.8U CN203708164U (en) | 2013-11-28 | 2013-11-28 | Chopper variable-value control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320774522.8U CN203708164U (en) | 2013-11-28 | 2013-11-28 | Chopper variable-value control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203708164U true CN203708164U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320774522.8U Expired - Fee Related CN203708164U (en) | 2013-11-28 | 2013-11-28 | Chopper variable-value control device |
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| CN (1) | CN203708164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486490A (en) * | 2016-01-14 | 2016-04-13 | 昆明物理研究所 | Automatic testing method and automatic testing device for disc type micro optical chopper assembly |
-
2013
- 2013-11-28 CN CN201320774522.8U patent/CN203708164U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486490A (en) * | 2016-01-14 | 2016-04-13 | 昆明物理研究所 | Automatic testing method and automatic testing device for disc type micro optical chopper assembly |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20141128 |
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| EXPY | Termination of patent right or utility model |