CN101533070B - Line voltage zero-cross detection device of integrated starting motor - Google Patents
Line voltage zero-cross detection device of integrated starting motor Download PDFInfo
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- CN101533070B CN101533070B CN2009100010178A CN200910001017A CN101533070B CN 101533070 B CN101533070 B CN 101533070B CN 2009100010178 A CN2009100010178 A CN 2009100010178A CN 200910001017 A CN200910001017 A CN 200910001017A CN 101533070 B CN101533070 B CN 101533070B
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- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 238000002955 isolation Methods 0.000 claims abstract description 14
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- 238000010168 coupling process Methods 0.000 claims abstract description 7
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Abstract
The invention discloses a line voltage zero-cross detection device of an integrated starting motor. The detection device comprises a signal filtration module, a signal differential comparison module and an isolation module, wherein B and C phase line-voltage signals of the integrated starting motor are respectively in parallel connection with a 10 nf capacitor before inputted to the filtration module; the output of the filtration module is inputted to the differential comparison module; the differential comparison module outputs a pulse width modulation (PWM) signal through calculating and comparing the difference value of the inputted signal; and the PWM signal is transmitted through the isolation module and then is inputted to a hybrid control unit (HCU). The line voltage zero-cross detection device realizes the function of high-frequency filtration through two simple parallelly connected capacitors, thereby reducing high-frequency noise in the signal; moreover, the detection device adopts an optical coupling isolator between the differential comparison module and the HCU for isolation so as to realize normal operation of high-voltage and low-voltage working modules, increase device safety and ensure the precision requirement of synchronicity.
Description
Technical field
The present invention relates to a kind of integrated starting motor line voltage detecting technical field, is a kind of signal supervisory instrument when automatically detecting the B-C line voltage zero-cross point of the employed integrated starting motor of PHEV (ISG) on the PHEV production line specifically.
Background technology
In modern vehicle production, assembling process, engine flywheel shape, installation site precision and position shape error play crucial effects to the High Accuracy Control and the operation of vehicle.Particularly in PHEV, High Accuracy Control be realized, accurate control must be at first realized the integrated starting motor position of its use to vehicle.Particularly when integrated actuating motor actual installation, because the mechanical installation deviation of devices such as motor position sensor initial position and signal panels, cause the position relation of back electromotive force and position signalling between the actual motor B-C that records to satisfy the requirement of Fig. 4, this just causes electric machine controller (MCU) can't accurately demarcate motor speed and control motor, for addressing this problem, before each PHEV rolls off the production line, electric machine controller need be stored the absolute relation between the position signalling of counter electromotive force of motor and position transducer, the deviation angle between they the two just, the pattern that electric machine controller is operated in this state is referred to as the collimation pattern, in the standard value calibration mode course of work of electric machine controller, need to detect the position of back electromotive force zero-crossing between motor B-C, be B, the position of C two phase voltage waveform intersections.
Concrete standard value calibration process as shown in Figure 3, earlier integrated starting motor is installed on the engine and (comprises motor position sensor, support, rotor etc.), just wheel box and annex are installed on the engine then, will test with controller (comprising signal wire, hi-line) to be installed on the integrated starting motor again.After finishing above installation, by the integrated starting motor starting engine, this moment, the standard value initial value of position transducer adopted empirical value.Behind the engine start, integrated starting motor is withdrawn into idle pulley, when engine speed is stabilized in the 800rpm left and right sides, electric machine controller (MCU) enters accurate value demarcation state, realize accurate value demarcation by the algorithm in line voltage zero-cross detection device of integrated starting motor and the electric machine controller (MCU) this moment, and scalar quantity outputed to the PC machine by the CAN bus, export by the printing bar code device.
When common line voltage zero-cross detection device of integrated starting motor was worked under standard value demarcation state, the signal when gathering the B-C back electromotive force zero-crossing was subjected to noise signal easily and disturbs, and influences the accuracy that null position is gathered.In addition, the tradition zero crossing detection device detects the B-C back electromotive force zero-crossing output square-wave signal obtain, and to flow to time delay of electric machine controller (MCU) longer, the deterioration in accuracy of time synchronized that causes the high-voltage signal of low tension signal and input influences the accuracy that final deviation angle calculates.
Summary of the invention
The objective of the invention is for overcoming in the prior art, signal when the integrated starting motor line voltage zero-cross detects the B-C back electromotive force zero-crossing that collects is subjected to the defective that noise signal disturbs easily, reduced the time delay that the output square-wave signal sends electric machine controller (MCU) to simultaneously, and, increased the isolation between high voltage circuit components and parts and the low voltage circuit components and parts for increasing the security of the device course of work.
Realize that above-mentioned purpose technical scheme of the present invention is: a kind of line voltage zero-cross detection device of integrated starting motor, comprise the signal filtering module, signal differential comparison module and isolation module, the B of integrated starting motor, C phase line voltage signal is electric capacity respectively in parallel before the input filtration module, the output input difference comparison module of filtration module, the difference comparison module is by calculating the difference of comparator input signal, output pulse width modulating wave (PWM) signal, this signal are imported hybrid controller (H-CU) after by isolation module.The optical coupling isolator that isolation module adopted can be time delay only the HCPL2400 isolator of ns magnitude will isolate between high voltage circuit device and the potential circuit components and parts, and guaranteed B, the C back electromotive force zero-crossing satisfies synchronous requirement to the time delay that the output square-wave signal flows to electric machine controller.B, the electric capacity filter away high frequency noise signal of C phase line voltage signal difference 10nf in parallel before the input filtration module.Filtration module, the power supply of signal differential comparison module and isolation module adopts the 12v dc-battery.The input signal of hybrid controller is that the voltage after isolating by optical coupling isolator is the high level square-wave pulse bandwidth modulation signals of 5v.
The principle of work of line voltage zero-cross detection device of integrated starting motor of the present invention is as described below: the B of integrated starting motor, C two phase voltage signals are the HF noise signal that can elimination produces from the motor switch driving circuit of twice filtering of ripple electric capacity and filtration module after filtration, carry out computing through filtered high voltage signal by differential ratio, at B, the moment of the moment of C back electromotive force zero-crossing also is the pulse-length modulation ripple signal of the crossing high level of position output of B phase and C.In order to satisfy operate as normal and the safety between high voltage device and the low-voltage device, between difference comparison module and hybrid controller, isolate with optical coupling isolator, hybrid controller and electric machine controller are by inner CAN bus communication, and electric machine controller inside is demarcated with finally realize collimation from the cosine signal angle difference of motor position sensor by calculating from the pulse-length modulation ripple signal of HCU.
The present invention is simple in structure, easy to operate, compares with existing correlation technique, has the following advantages:
1, the B of integrated starting motor, C phase voltage signal have realized the High frequency filter effect by two simple shunt capacitances before inputing to the signal filtering module, reduced the high frequency noise that is comprised in the signal.
2, between difference comparison module and hybrid controller, isolate with optical coupling isolator, realized the operate as normal of high-low pressure operational module, increase the security of device, and can guarantee the precision of time synchronized of the high-voltage signal of the low tension signal exported and input.
3, utilize line voltage zero-cross detection device of integrated starting motor of the present invention can make the speed that whole accurate value calibration process is more simple and reliable, accelerated the collimation demarcation.
Description of drawings
Fig. 1 is a line voltage zero-cross detection device of integrated starting motor block diagram of the present invention;
Fig. 2 is integrated starting motor and zero crossing detection device and other annex annexation block diagrams;
Fig. 3 is an integrated starting motor collimation calibration principle block diagram;
Fig. 4 is the oscillogram of desirable motor lines voltage and position transducer;
Fig. 5 is a line voltage zero-cross detection device of integrated starting motor input and output detection waveform of the present invention
Embodiment
Below in conjunction with accompanying drawing principle of work of the present invention is specifically described: Fig. 1 has provided the line voltage zero-cross detection device of integrated starting motor block diagram, the B of integrated starting motor, frequency range HF noise signal between 1khz～30kHz that the filter capacitor of C two phase voltage signals process 10nf and twice filtering elimination of filtration module produce from the motor switch driving circuit, test result shows, after selecting the electric capacity of 10nf for use, the noise signal amplitude of filtering is index decreased with the growth of frequency, when being 3khz as the frequency of undesired signal, the amplitude of undesired signal has decayed to 10%, certainly the value of filter capacitor is big more, filter effect is good more, but the time of big capacitance meeting delay input signal, also can produce the collimation calibration value of error, and only be the time delay that the electric capacity of selecting 10nf for use produces to satisfy the accuracy requirement of synchronism by 20ns.B through filter capacitor and filtering circuit, the mutually sinusoidal back-emf signal of C calculates at poor sub-module, when its signal intersects, pulse-length modulation ripple (PWM) signal of a high level of difference channel output, this signal is imported hybrid controller (HCU) after by isolation module, and hybrid controller picks up counting constantly from this, and the cosine signal of motor position sensor that inputs to it by the time is also during zero crossing, timing stops, and calculates the angle difference of two signals.This difference is multiplied by the data that are converted into 16 systems behind 2 20 powers after divided by 360 degree, promptly collimate nominal data, store MCU register the inside into, MCU outputs to this collimation calibration value on the PC by the CAN bus communication, print bar code by the printing bar code device then, as shown in Figure 3.Because MCU detects motor B, the accuracy of C back electromotive force zero-crossing time directly has influence on calculates the accuracy that collimation is demarcated offset value, so must must reduce as far as possible from gathering B, the C back electromotive force zero-crossing flows to the time delay of MCU to the output square-wave signal, the HCPL2400 device that calculating and test shows adopt light to isolate, time delay is the ns level only, is enough to satisfy the time requirement of synchronism.
Technique scheme has only embodied the optimal technical scheme of technical solution of the present invention, those skilled in the art to some part wherein some changes that may make all embodied principle of the present invention, belong within protection scope of the present invention.
Claims (6)
1. line voltage zero-cross detection device of integrated starting motor, comprise the signal filtering module, signal differential comparison module and isolation module, it is characterized in that, the B of integrated starting motor, C phase line voltage signal is electric capacity respectively in parallel before the input filtration module, the output input difference comparison module of filtration module, the difference comparison module is by calculating the difference of comparator input signal, and output pulse width modulating wave (PWM) signal, this signal are imported hybrid controller (HCU) after by isolation module.
2. line voltage zero-cross detection device of integrated starting motor according to claim 1 is characterized in that, isolation module adopts optical coupling isolator.
3. line voltage zero-cross detection device of integrated starting motor according to claim 1 is characterized in that, B, C phase line voltage signal electric capacity in parallel respectively before the input filtration module is 10nf.
4. line voltage zero-cross detection device of integrated starting motor according to claim 1 is characterized in that, the pulse-length modulation ripple signal that inputs to hybrid controller is that voltage is the high level square-wave signal of 5v.
5. line voltage zero-cross detection device of integrated starting motor according to claim 1 is characterized in that filtration module, and the power supply of signal differential comparison module and isolation module adopts the direct supply of 12v.
6. line voltage zero-cross detection device of integrated starting motor according to claim 2 is characterized in that, the optical coupling isolator that isolation module adopted is the time delay of the HCPL2400 isolator of ns magnitude only.
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| CN2009100010178A CN101533070B (en) | 2009-01-19 | 2009-01-19 | Line voltage zero-cross detection device of integrated starting motor |
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| CN2009100010178A CN101533070B (en) | 2009-01-19 | 2009-01-19 | Line voltage zero-cross detection device of integrated starting motor |
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| CN101533070B true CN101533070B (en) | 2011-09-21 |
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| CN106839281B (en) * | 2017-01-04 | 2023-06-09 | 深圳市菲莱克电子有限公司 | Control system of split air conditioner |
| CN111813260B (en) * | 2020-06-19 | 2021-07-20 | 东南大学 | Method for solving hysteresis error and high-frequency noise error of capacitive touch sensor |
| CN112230142B (en) * | 2020-09-22 | 2023-12-12 | 厦门芯阳科技股份有限公司 | Alternating current motor fault detection circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486960Y (en) * | 2001-06-10 | 2002-04-17 | 河北省电子信息技术研究院 | Detection display and controller for synchronous motor power factor |
| CN1140960C (en) * | 2000-10-09 | 2004-03-03 | 广东省科学院自动化工程研制中心 | Method for detecting rotor position of DC brushless motor without position sensor |
| CN1980044A (en) * | 2005-12-05 | 2007-06-13 | 乐金电子(天津)电器有限公司 | Counterelectro motive detection circuit of dc. brush-free motor |
| CN101025631A (en) * | 2006-02-24 | 2007-08-29 | 欧姆龙株式会社 | Electric motor controller |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140960C (en) * | 2000-10-09 | 2004-03-03 | 广东省科学院自动化工程研制中心 | Method for detecting rotor position of DC brushless motor without position sensor |
| CN2486960Y (en) * | 2001-06-10 | 2002-04-17 | 河北省电子信息技术研究院 | Detection display and controller for synchronous motor power factor |
| CN1980044A (en) * | 2005-12-05 | 2007-06-13 | 乐金电子(天津)电器有限公司 | Counterelectro motive detection circuit of dc. brush-free motor |
| CN101025631A (en) * | 2006-02-24 | 2007-08-29 | 欧姆龙株式会社 | Electric motor controller |
Non-Patent Citations (1)
| Title |
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| 陈兵等.一种改进的无刷直流电动机转子位置反电势检测方法.《微电机》.2008,第41卷(第8期),46-47，51. * |
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