CN103104362B - A kind of control method for engine speed and controller thereof - Google Patents
A kind of control method for engine speed and controller thereof Download PDFInfo
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- CN103104362B CN103104362B CN201310037901.3A CN201310037901A CN103104362B CN 103104362 B CN103104362 B CN 103104362B CN 201310037901 A CN201310037901 A CN 201310037901A CN 103104362 B CN103104362 B CN 103104362B
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Abstract
The invention discloses a kind of control method for engine speed and controller thereof, wherein method comprises the following steps: to gather the existing revolution of motor, itself and the revolution of specifying contrast by microcontroller, drive throttle stepper motor to carry out adjustment Carburetor aperture, thus make the revolution that engine stabilizer is being specified.Controller comprises following modules: engine revolution acquisition module: gather the existing revolution of motor; Micro controller module: existing for the motor of collection revolution and the revolution of specifying contrast by microcontroller, drives throttle stepper motor to carry out adjustment Carburetor aperture, thus makes the revolution that engine stabilizer is being specified.The present invention simply can use the integrated igniter of former motor, under the prerequisite of not Influential cases firearm work completely, do not need to use power coil to power with trigger to gather rotating speed in addition, the untapped half-wave of the voltage directly utilizing igniter primary air to sense is powered for controller, greatly simplify design and reduces cost.
Description
Technical field
The present invention relates to a kind of method and the controller thereof that carry out adjusting control to engine revolution.
Background technique
Available engine uses mechanical spring to regulate accelerator open degree, need to use multiple mechanical part to install on the engine, every platform machine is also needed to adjust separately when assembling, when having multiple rotation speed requirements, by stirring the level of stretch of positioning block adjustment spring to control rotating speed position, can be there is larger change with load variations in rotating speed, the heavier rotating speed of load is lower under normal circumstances, and when there being multiple rotating speed of target, precision is poor.
Summary of the invention
The object of this invention is to provide a kind of can the revolution of accurate adjustment motor to the control method for engine speed of designated value and controller thereof.
In order to realize above-mentioned first object, by the following technical solutions: a kind of engine revolution controlling method, is characterized in that: described method comprises the following steps:
Gather the existing revolution of motor, itself and the revolution of specifying contrast by microcontroller, drive throttle stepper motor to carry out adjustment Carburetor aperture, thus make the revolution that engine stabilizer is being specified.
The revolution information of described collection motor is obtained by the voltage signal gathered in engine integration igniter primary air.
The non-half-wave of the voltage sensed from the primary air of engine integration igniter is that microcontroller is powered.
In order to realize above-mentioned second object, by the following technical solutions:
A kind of engine revolution controller, is characterized in that: described controller comprises following modules:
Engine revolution acquisition module: gather the existing revolution of motor;
Micro controller module: existing for the motor of collection revolution and the revolution of specifying contrast by microcontroller, drives throttle stepper motor to carry out adjustment Carburetor aperture, thus makes the revolution that engine stabilizer is being specified.
Described engine revolution acquisition module includes the pulse shaping nework that gathers the voltage signal in engine integration igniter primary air.
The primary air of engine ignition is connected with the input end of voltage stabilizer by a diode, and voltage stabilizer is that micro controller module is powered.
The present invention simply can use the integrated igniter of former motor, under the prerequisite of not Influential cases firearm work completely, do not need to use power coil to power with trigger to gather rotating speed in addition, the untapped half-wave of the voltage directly utilizing igniter primary air to sense is powered for controller, and gather rotating speed by calculate adjust engine speed, simultaneously directly take power supply from integrated igniter, this makes this method simple, can on original motor, directly only increase controller and install stepper motor additional on Carburetor, which solve the problem that a lot of motor does not have independent power coil or battery (storage battery), greatly simplify design and reduce cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of middle controller of the present invention;
Fig. 2 is the physical circuit figure of middle controller of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As depicted in figs. 1 and 2, primary side one end ground connection of the spark coil T1 that integrated igniter includes, one end connects flame-out line, and input end and the diode D1 of flame-out line and controller are connected, and are connected after the primary side of igniter is connected with the ground wire of controller with the ground wire of motor.
The output terminal of controller is connected to the throttle stepper motor B1 on Carburetor.Controller is also connected with selection of speed switch S 1 as required, switch S 2 etc.When selection of speed switch S 1 is closed or disconnect, shows that certain value is appointed as by the revolution of now motor, be assumed to A here.
The electric energy of igniter primary air is obtained after controller is connected with igniter, and detect tacho-pulse by triode Q1, after the pulse detected and rotating speed of target A contrast, output signal is calculated to pulse driving circuit U2 through PID, throttle stepper motor is outputted to after Current amplifier, stepper motor is turned an angle, allows engine speed change, finally make engine peed stable near rotating speed of target.
Controller is divided into 4 major parts, is power supply unit respectively, rotating speed collecting part, MCU part, pulsed drive part.
power supply unit: comprise element: diode D1, have electrode capacitance C1, have electrode capacitance C2, three terminal regulator VR1.
General integrated igniter is all adopt negative impulse igniting, use positive pulse to obtain electric current not affect igniter, controller power source adopts diode D1 to carry out positive half-wave rectification, have the mode of electrode capacitance C1 filtering to obtain DC electrical source, and use three terminal regulator VR1 to produce MCU(microcontroller) power supply.Electrode capacitance C2 is had to be MCU power filter.
Under special circumstances, integrated igniter also likely uses positive pulse igniting, and when mating this igniter, system power supply will change negative one way rectifier into.The conversion of this positive and negative half-wave is that those skilled in the art are all applicable, also has same change, no longer explain below in rotating speed Acquisition Circuit.
rotating speed Acquisition Circuit: comprise component resistance R1, resistance R2, triode Q1.The voltage transitions responded to by spark coil is the input end VIN that tacho-pulse outputs to MCU, and gather rotating speed for MCU, wherein resistance R1 can be built in again in MCU.
MCU
circuit: MCU is a monolithic microprocessor, may comprise one to several rotating speed initialize switch S1, S2 etc.MCU is responsible for converting the tacho-pulse sensed to rotating speed and carrying out PID calculating more again with preset rotating ratio, finally exports driving stepper motor pulse.The number of preset rotating speed is relevant with the quantity of initialize switch, is at least more than number of switches 1, also can carry out combination and obtain more preset rotating speed, can be obtained up to few 2 preset rotating speeds when outside has during an initialize switch.In particular cases can there is no initialize switch yet, a preset rotating speed will be only had.
pulse driving circuit: the pulsed drive ability that MCU exports limits by MCU, therefore needs to carry out Current amplifier and carry out Driving Stepping Motor.Pulse driving circuit can be single multichannel Current amplifier IC, also can be the current amplification circuit of the triode composition be separated.Generally, the stepper motor of use needs to mate with pulse way.Only for two-phase stepping motor in circuit diagram, four lines are adopted to drive.The stepper motor of other form needs the way changing drive singal, does not repeat them here.
For the integrated igniter that general-purpose petrol engine often uses, not only there is ignition control circuit its inside, also includes the primary and secondary coil of spark coil.Namely spark coil T1 in the present embodiment Fig. 2 is primary air and the secondary winding of this integrated igniter.When engine flywheel rotates, the magnet steel be arranged on flywheel also rotates thereupon, primary air cutting magnetic line and produce induced voltage, and the negative half-wave of this voltage and the circuit co-operation of integrated igniter produce firing pulse.(for the igniter using positive half-wave, only needing the connecting line of primary air to exchange)
As shown in Figure 2, elementary one end ground connection of spark coil T1, one end connects flame-out line, is equivalent to primary short when flame-out line ground connection, and igniter stops igniting.Controller in the present invention is just connected to the ground with flame-out line, can obtain the induced voltage on primary air.The induced voltage positive half-wave that primary air produces, by diode D1 rectification, having electrode capacitance C1 filtering to obtain unstable voltage source, then obtains stable supply voltage by three terminal regulator VR1, having electrode capacitance C2 for leaching power supply disturbance clutter.There is electrode capacitance C1, for circuit working provides electric current when having the effect of electrode capacitance C2 to be also that primary air does not have an induced voltage.
The induced voltage of primary air, also by resistance R1, resistance R2, triode Q1, obtains tacho-pulse at the VIN end of MCU.When primary air induced voltage does not arrive, triode Q1 not conducting, VIN obtains high level by resistance R1 is biased; When elementary coil-induced voltage arrives, the value of resistance R1 and resistance R2 makes triode Q1 saturation conduction, and VIN becomes low level.After elementary coil-induced voltage, VIN reverts to high level again, so obtains tacho-pulse.
It should be noted that, by the connecting means of Fig. 2, because the primary air of general integrated igniter can induce two positive waves for one week at flywheel turns, VIN will obtain two pulses each week.Also the base stage of three grades of Q1 can be connected another resistance to power end, configure this resistance and resistance R1, the value of resistance R2, make triode Q1 saturation conduction when primary air does not have voltage, such VIN is low level time flat, at primary air induced voltage for time negative, negative voltage makes triode Q1 exit saturation conduction state and enters cut-off, and VIN becomes high level.Because the negative half-wave of general integrated igniter is used for igniting and only has a negative wave, so this mode engine rotates within one week, obtain a tacho-pulse.
MCU calculates rotating speed by the interpulse period detecting VIN end, in Fig. 2 pattern, because each cycle has two positive pulses, so needing with two pulses is one group of test interval obtain the cycle, then goes out rotating speed with computation of Period.(also can use negative half-wave testing circuit, can be one group with a pulse like this and carry out the test pulse cycle).MCU is detecting switch S1 also, and the position of switch S 2 grade, determines preset rotating speed A.Only use switch S 1 under normal circumstances, switch S 1 disconnects and connects as two states, obtains two preset rotating speeds respectively.A preset rotating speed is the idling speed of motor, and another rotating speed is working speed.Such motor can be switched to working speed from idling easily.More rotating speed initialize switch can be added when there being the requirement of multiple working speed, can simply obtain different operating rotating speed and deal with different job requirements in diverter switch position.
MCU calculates actual rotating speed and compares with preset rotating speed A, obtains the difference of rotating speed, because engine speed has lag time after throttle adjustment, so need to carry out PID calculating, exports suitable driving stepper motor pulse at reasonable time.The interval of driving pulse is optimized for the hysteresis effect of engine throttle, and the driving pulse sequence of output determines to Figure 2 shows that the angular dimension that stepper motor rotates two-phase stepping motor, drive this stepper motor to need 4 tunnel pulses.
The pulse that MCU exports is carried out Current amplifier through pulse driving circuit U2 and is connected to stepper motor.The power supply of pulse driving circuit U2, according to the needs of stepper motor, is connected to diode D1 and the common port having electrode capacitance C1, can obtains more high voltage and electric current, so that easier Driving Stepping Motor.If the requirement of stepper motor to supply voltage is higher, also need for pulse driving circuit U2 increases power supply stabilization circuit.
Stepper motor rotates and drives accelerator open degree to change, the inlet gas concentration of Carburetor and air inflow all can change, this change can make engine speed change, and the rotation speed change of motor was detected by MCU in the subsequent rotation cycle, MCU is according to calculating the time and angle of determining stepper motor rotation next time, circulate and so forth, finally make engine peed stable near preset rotating speed.The operating mode of motor can be optimized by the algorithm changing MCU, make the burning of motor more thorough, thus fuel saving and improvement discharge.
The present invention's not only simplified design and reducing costs, also has the effect improving motor discharge.
Claims (4)
1. an engine revolution controlling method, is characterized in that: described method comprises the following steps:
Gather the existing revolution of motor, itself and the revolution of specifying contrast by microcontroller, drive throttle stepper motor to carry out adjustment Carburetor aperture, thus make the revolution that engine stabilizer is being specified;
The non-half-wave of the voltage sensed from the primary air of engine integration igniter is that microcontroller is powered.
2. engine revolution controlling method as claimed in claim 1, is characterized in that: the revolution information of described collection motor is obtained by the voltage signal gathered in engine integration igniter primary air.
3. an engine revolution controller, is characterized in that: described controller comprises following modules:
Engine revolution acquisition module: gather the existing revolution of motor;
Micro controller module: existing for the motor of collection revolution and the revolution of specifying contrast by microcontroller, drives throttle stepper motor to carry out adjustment Carburetor aperture, thus makes the revolution that engine stabilizer is being specified;
The primary air of engine ignition is connected with the input end of voltage stabilizer by a diode, and voltage stabilizer is that micro controller module is powered.
4. engine revolution controller as claimed in claim 3, is characterized in that: described engine revolution acquisition module includes the pulse shaping nework that gathers the voltage signal in engine integration igniter primary air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310037901.3A CN103104362B (en) | 2013-01-31 | 2013-01-31 | A kind of control method for engine speed and controller thereof |
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| CN201310037901.3A CN103104362B (en) | 2013-01-31 | 2013-01-31 | A kind of control method for engine speed and controller thereof |
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| CN103104362A CN103104362A (en) | 2013-05-15 |
| CN103104362B true CN103104362B (en) | 2015-08-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104796054A (en) * | 2015-04-04 | 2015-07-22 | 余姚市赛奥机电有限公司 | Stepping motor controller |
| CN111304817B (en) * | 2020-03-20 | 2022-03-01 | 苏州特点电子科技有限公司 | Segmented roller control method of full-automatic computerized flat knitting machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201331U (en) * | 1985-04-20 | 1986-05-07 | 河北机电学院附属工厂 | Step-by-step motor speed regulator for internal combustion engine |
| JPH0454257A (en) * | 1990-06-20 | 1992-02-21 | Mazda Motor Corp | Engine speed numerical controller |
| CN2369409Y (en) * | 1999-03-06 | 2000-03-15 | 李祥亚 | Power enhancer for large power motorcycle generator |
| CN2513828Y (en) * | 2001-12-31 | 2002-10-02 | 中国嘉陵工业股份有限公司（集团） | Automatic time limiter for motorcycle |
| WO2003087568A1 (en) * | 2002-04-12 | 2003-10-23 | Iida Denki Kogyo Co.,Ltd. | Ignition timing control method for internal combustion engine-use iginition device and ignition timing control device |
| CN201650551U (en) * | 2009-12-07 | 2010-11-24 | 南京航空航天大学 | Spark ignition engine ignition advance angle and rotary speed signal acquisition systems |
| 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 |
| CN203189129U (en) * | 2013-01-31 | 2013-09-11 | 陈德宇 | Rotary speed controller for engine |
-
2013
- 2013-01-31 CN CN201310037901.3A patent/CN103104362B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201331U (en) * | 1985-04-20 | 1986-05-07 | 河北机电学院附属工厂 | Step-by-step motor speed regulator for internal combustion engine |
| JPH0454257A (en) * | 1990-06-20 | 1992-02-21 | Mazda Motor Corp | Engine speed numerical controller |
| CN2369409Y (en) * | 1999-03-06 | 2000-03-15 | 李祥亚 | Power enhancer for large power motorcycle generator |
| CN2513828Y (en) * | 2001-12-31 | 2002-10-02 | 中国嘉陵工业股份有限公司（集团） | Automatic time limiter for motorcycle |
| WO2003087568A1 (en) * | 2002-04-12 | 2003-10-23 | Iida Denki Kogyo Co.,Ltd. | Ignition timing control method for internal combustion engine-use iginition device and ignition timing control device |
| CN201650551U (en) * | 2009-12-07 | 2010-11-24 | 南京航空航天大学 | Spark ignition engine ignition advance angle and rotary speed signal acquisition systems |
| 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 |
| CN203189129U (en) * | 2013-01-31 | 2013-09-11 | 陈德宇 | Rotary speed controller for engine |
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Effective date of registration: 20170427 Address after: Jiulongpo District of Chongqing City Heng Jie Shi Pingqiao 400050 special No. 11 Patentee after: Chongqing Casting Technology Co., Ltd. Address before: 400039 Chongqing Jiulongpo Branch City Road No. 98 4-1-3-2 Co-patentee before: Wang Qingjun Patentee before: Chen Deyu |
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