CN104796054A - Stepping motor controller - Google Patents
Stepping motor controller Download PDFInfo
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- CN104796054A CN104796054A CN201510158861.7A CN201510158861A CN104796054A CN 104796054 A CN104796054 A CN 104796054A CN 201510158861 A CN201510158861 A CN 201510158861A CN 104796054 A CN104796054 A CN 104796054A
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Abstract
The invention discloses a stepping motor controller which is connected with a primary coil of an igniter. Voltage generated by the primary coil powers an MCU (microprogrammed control unit) core circuit and a stepping motor after passing a power source circuit and provides electric signals reflecting rotating speed of the stepping motor to the MCU core circuit through a shaping circuit, the MCU core circuit of the controller provides driving signals to a driving circuit according to input electric signals, and the driving circuit drives the stepping motor according to the driving signals. The voltage generated by the primary coil of the igniter is fully utilized to power the stepping motor controller and acquire the electric signals reflecting the rotating speed of the stepping motor; a special power generating device is not added, and electronic speed adjusting is realized without increasing size of a small universal gasoline engine.
Description
Technical field
The present invention relates to controllor for step-by-step motor, particularly relate to the controllor for step-by-step motor that a kind of voltage utilizing igniter primary coil to produce is powered for controller.
Background technology
In small utility gasoline engine field, substituting traditional throttle speed adjusting gear by the stepping motor electronic speed regulation mode of advanced person becomes a kind of development trend.In existing stepping motor electronic speed regulation technology, stepping motor all arranges isolated plant and provides power supply for it, and miniature gasoline engine small volume, be unsuitable for adding isolated plant again.
Summary of the invention
For solving the problem, the invention provides a kind of controllor for step-by-step motor, the voltage utilizing igniter primary coil to produce is powered for controller, does not need to arrange isolated plant.
A kind of controllor for step-by-step motor disclosed by the invention, comprise MCU core circuit and drive circuit, the described output Direct driver stepping motor through drive circuit, the control signal that described MCU core circuit exports controls stepping motor through drive circuit, wherein, also comprise:
Power circuit, described power circuit input tie point firearm primary coil, first output of described power circuit connects the power end of MCU core circuit, the operating voltage that described first output provides MCU core circuit to need, second output of described power circuit connects the power input of drive circuit, the supply voltage that described second output provides drive circuit to need;
Shaping circuit, described shaping circuit input tie point firearm primary coil, described shaping circuit output connects the signal input part of MCU core circuit, and described shaping circuit provides the signal of telecommunication of reflection stepping motor rotating speed to MCU core circuit.
Wherein, described power circuit comprises rectification unit and converting unit, and described rectification unit tie point firearm primary coil also carries out rectification to the output of igniter primary coil, and described converting unit connects rectification unit and carries out voltage transitions to the output of rectification unit.
Wherein, also filter unit is provided with between described rectification unit and converting unit.
Wherein, described converting unit has two modular converters, and the output voltage amplitude of described two modular converters is not etc.
Wherein, described shaping circuit comprises sampling unit and comparing unit, and described sampling unit tie point firearm primary coil also samples the output of igniter primary coil, and sampled signal and reference signal compare and output Shaping signal by described comparing unit.
Wherein, the output of described comparing unit connects partial pressure unit, and the reshaping signal that comparing unit exports by described partial pressure unit carries out dividing potential drop output.
Compared with prior art, advantage of the present invention and effect are: making full use of the voltage that igniter primary coil produces is that controllor for step-by-step motor is powered and obtains reflecting the signal of telecommunication of stepping motor rotating speed, not increasing isolated plant, realizing electronic speed regulation when not increasing small utility gasoline engine volume.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of controllor for step-by-step motor of the present invention.
Fig. 2 is the schematic diagram of power circuit in Fig. 1.
Fig. 3 is another schematic diagram of power circuit in Fig. 1.
Fig. 4 is the another schematic diagram of power circuit in Fig. 1.
Fig. 5 is the schematic diagram of shaping circuit in Fig. 1.
Fig. 6 is another schematic diagram of shaping circuit in Fig. 1.
Fig. 7 is the circuit diagram of a kind of controllor for step-by-step motor of the present invention.
Fig. 8 is the signal waveform schematic diagram of triode Q1 collector electrode in Fig. 7.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
As shown in Figure 1, between igniter primary coil and stepping motor, be provided with controller, in this controller, be provided with power circuit F1, shaping circuit F2, MCU core circuit F3 and drive circuit F4.The primary coil of power circuit F1 input tie point firearm, power circuit F1 has two different outputs of output voltage amplitude, these two outputs are powered respectively to MCU core circuit F3 and drive circuit F4, output connects the power end of MCU core circuit F3 and provides the operating voltage of needs to MCU core circuit F3, and another output connects the power input of drive circuit F4 and provides the supply voltage of needs to drive circuit F4.The primary coil of shaping circuit F2 input tie point firearm, shaping circuit F2 output connects the signal input part of MCU core circuit F3, after the voltage process that primary coil produces by shaping circuit F2, provide the signal of telecommunication of reflection stepping motor rotating speed to MCU core circuit F3.
Igniter is cutting magnetic line under the magnetic wheel action rotated, and igniter primary coil two ends produce the induced voltage of certain amplitude and frequency.The voltage that primary coil produces is after power circuit F1, power to MCU core circuit F3 and stepping motor, and the signal of telecommunication of reflection stepping motor rotating speed is provided to MCU core circuit F3 through shaping circuit F2, the MCU core circuit F3 of controller provides drive singal according to the signal of telecommunication of input to drive circuit F4, drive circuit F4 is according to drive singal Driving Stepping Motor, the voltage making full use of the generation of igniter primary coil is that controller is powered and obtains reflecting the signal of telecommunication of stepping motor rotating speed, do not increase isolated plant, electronic speed regulation is realized when not increasing small utility gasoline engine volume.
As shown in Figure 2, power circuit F1 has rectification unit 110 and converting unit 120, rectification unit 110 tie point firearm primary coil also carries out rectification to the output of igniter primary coil, and converting unit 120 connects rectification unit 110 and carries out voltage transitions to the output of rectification unit 110.
As shown in Figure 3, the power circuit F1 in Fig. 2 also has filter unit 130, is also provided with filter unit 130 between rectification unit 110 and converting unit 120.
As shown in Figure 4, converting unit 120 has modular converter 121,122, and the output voltage amplitude of this modular converter 121 and modular converter 122 is not etc.
As shown in Figure 5, shaping circuit F2 has sampling unit 210 and comparing unit 220, sampling unit 210 tie point firearm primary coil also samples the output of igniter primary coil, and sampled signal and reference signal compare and output Shaping signal by comparing unit 220.
As shown in Figure 6, the output of described comparing unit 220 connects partial pressure unit 230, and the reshaping signal that comparing unit 220 exports by described partial pressure unit 230 carries out dividing potential drop output.
As shown in Figure 7, diode D2 carries out rectification to the voltage that igniter primary coil produces, and electric capacity C1, electric capacity C2 and electric capacity C3 carry out filtering process to the voltage signal after rectification, and the number of electric capacity differs and is decided to be three, as long as capacitance size to fit.Filtered voltage signal is as the supply voltage of driving chip LV8548, and filtered voltage signal is also changed through voltage conversion chip 78L05, the voltage be converted to after electric capacity C4 and capacitor filtering C5 as the operating voltage of control chip PIC12F615.
Stepping motor often rotates a circle, and igniter primary coil produces the induced voltage signal of one-period T, and namely stepping motor rotating speed and induced voltage signal frequency are the relations of 1:1, and thus induced voltage signal frequency can reflect the rotating speed of stepping motor.The voltage that igniter primary coil produces is after diode D1, resistance R1 and resistance R4, resistance R4 obtains sampled signal, sampled signal is input to the base stage of triode Q1, and the conduction voltage drop of triode Q1 is as reference signal, and the collector signal of triode Q1 is as output signal.The conduction voltage drop of sampled signal and triode Q1 compares, when sampled signal is greater than conduction voltage drop, and triode Q1 conducting, the collector electrode output low level of triode Q1; When sampled signal is less than conduction voltage drop, triode Q1 turns off, and the collector electrode of triode Q1 exports high level, and the signal waveform of collector electrode enters as shown in Figure 8, namely the voltage that igniter primary coil produces is shaped to square-wave signal as shown in Figure 8, has two negative pulses in each cycle T.The signal of triode Q1 collector electrode is through connecting the resistance R3 and electric capacity C7 that connect successively, and the voltage division signal on electric capacity C7 is input to the signal input part of control chip PIC12F615, thus control chip PIC12F615 obtains the signal of telecommunication reflecting stepping motor rotating speed.
In addition, it should be noted that, the specific embodiment described in this specification, the shape, institute's title of being named etc. of its parts and components can be different.All equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection range of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (6)
1. a controllor for step-by-step motor, comprise MCU core circuit F3 and drive circuit F4, the described output Direct driver stepping motor through drive circuit F4, the control signal that described MCU core circuit F3 exports controls stepping motor through drive circuit F4, it is characterized in that, also comprise:
Power circuit (F1), described power circuit (F1) input tie point firearm primary coil, first output of described power circuit (F1) connects the power end of MCU core circuit F3, described first output provides the MCU core circuit F3 operating voltage needed, second output of described power circuit (F1) connects the power input of drive circuit F4, and described second output provides the drive circuit F4 supply voltage needed;
Shaping circuit F2, described shaping circuit F2 input tie point firearm primary coil, described shaping circuit F2 output connects the signal input part of MCU core circuit F3, and described shaping circuit F2 provides the signal of telecommunication of reflection stepping motor rotating speed to MCU core circuit F3.
2. controllor for step-by-step motor according to claim 1, it is characterized in that, described power circuit (F1) comprises rectification unit 110 and converting unit (120), described rectification unit 110 tie point firearm primary coil also carries out rectification to the output of igniter primary coil, and described converting unit (120) connects rectification unit 110 and carries out voltage transitions to the output of rectification unit 110.
3. controllor for step-by-step motor according to claim 2, is characterized in that, is also provided with filter unit (130) between described rectification unit 110 and converting unit (120).
4. the controllor for step-by-step motor according to Claims 2 or 3, is characterized in that, described converting unit (120) has two modular converters, and the output voltage amplitude of described two modular converters is not etc.
5. controllor for step-by-step motor according to claim 1, it is characterized in that, described shaping circuit F2 comprises sampling unit (210) and comparing unit (220), described sampling unit (210) tie point firearm primary coil also samples the output of igniter primary coil, and sampled signal and reference signal compare and output Shaping signal by described comparing unit (220).
6. controllor for step-by-step motor according to claim 5, it is characterized in that, the output of described comparing unit (220) connects partial pressure unit (230), and the reshaping signal that comparing unit (220) exports is carried out dividing potential drop output by described partial pressure unit (230).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158861.7A CN104796054A (en) | 2015-04-04 | 2015-04-04 | Stepping motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158861.7A CN104796054A (en) | 2015-04-04 | 2015-04-04 | Stepping motor controller |
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| CN104796054A true CN104796054A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510158861.7A Pending CN104796054A (en) | 2015-04-04 | 2015-04-04 | Stepping motor controller |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06233594A (en) * | 1993-01-28 | 1994-08-19 | Aisan Ind Co Ltd | Controller of stepping motor |
| CN201982178U (en) * | 2011-01-18 | 2011-09-21 | 中国人民解放军总后勤部建筑工程研究所 | Digital electronic speed governor control circuit of diesel engine of sophisticated power station |
| CN103104362A (en) * | 2013-01-31 | 2013-05-15 | 陈德宇 | Engine revolving speed control device and engine speed controller |
| CN203189129U (en) * | 2013-01-31 | 2013-09-11 | 陈德宇 | Rotary speed controller for engine |
| CN204633658U (en) * | 2015-04-04 | 2015-09-09 | 余姚市赛奥机电有限公司 | A kind of controllor for step-by-step motor |
-
2015
- 2015-04-04 CN CN201510158861.7A patent/CN104796054A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06233594A (en) * | 1993-01-28 | 1994-08-19 | Aisan Ind Co Ltd | Controller of stepping motor |
| CN201982178U (en) * | 2011-01-18 | 2011-09-21 | 中国人民解放军总后勤部建筑工程研究所 | Digital electronic speed governor control circuit of diesel engine of sophisticated power station |
| CN103104362A (en) * | 2013-01-31 | 2013-05-15 | 陈德宇 | Engine revolving speed control device and engine speed controller |
| CN203189129U (en) * | 2013-01-31 | 2013-09-11 | 陈德宇 | Rotary speed controller for engine |
| CN204633658U (en) * | 2015-04-04 | 2015-09-09 | 余姚市赛奥机电有限公司 | A kind of controllor for step-by-step motor |
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Application publication date: 20150722 |