CN105119537A - Counter potential zero-crossing detection motor control system - Google Patents
Counter potential zero-crossing detection motor control system Download PDFInfo
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- CN105119537A CN105119537A CN201510464791.8A CN201510464791A CN105119537A CN 105119537 A CN105119537 A CN 105119537A CN 201510464791 A CN201510464791 A CN 201510464791A CN 105119537 A CN105119537 A CN 105119537A
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Abstract
The invention discloses a counter potential zero-crossing detection motor control system, including a brushless direct current motor. A motor speed detection module, an A/D conversion module, a counter potential zero-crossing detection circuit and a PWM regulator connected in sequence are arranged on the brushless direct current motor; a counter potential zero-crossing detection circuit includes a microcontroller module, a time-delay circuit module, a neutral-point voltage estimation module, a zero-crossing detection module, an FIPS phase shift module and a commutation control module; and the microcontroller module, the zero-crossing detection module, the FIPS phase shift module and the commutation control module are connected in sequence, the time-delay circuit module is connected with the microcontroller module and the commutation control module, and the neutral-point voltage estimation module is connected between the microcontroller module and the zero-crossing detection module. Precise regulation of rotating speed of a control object is realized, the problem of a dead halt does not exist, and a requirement of an electric vehicle for stable operation of a motor controller is satisfied.
Description
Technical field
The present invention relates to a kind of electric machine control system, particularly relate to a kind of back-emf zero passage detection electric machine control system, belong to Motor Control Field.
Background technology
Along with the dual-pressure of environmental pollution and energy crisis strengthens, the demand of people to electric motor car progressively improves.Electric motor car comprises four major parts usually: control system, motor and drive system thereof, battery and car body.Wherein, motor and drive system thereof directly determine the overall permanence of electric motor car.Compare other motors, brshless DC motor relies on the clear superiority in energy density, efficiency etc., becomes the main selection of electric automobiles gradually.And the brshless DC motor of position-sensor-free, be more that of avoiding the installation of position transducer, simplify the structure, saved cost, improve the reliability of motor.So position-sensor-free technology becomes the study hotspot in electric vehicle motor driving field gradually.
Brshless DC motor is made up of motor body and driver, is a kind of typical electromechanical integrated product.Brushless electric machine refers to the motor of brushless and commutator, also known as commutatorless machine.In time being born motor last century, the practicality motor of generation is exactly brushless form, i.e. mouse cage AC formula asynchronous motor, this motor is widely used.But asynchronous motor has many defects that cannot overcome, so that motor technology slower development.The middle of this century has been born transistor, thus adopts transistor commutating circuit to replace the DC brushless motor of brush and commutator just to arise at the historic moment.This Novel brushless motor is called electronically commutated direct current machine, which overcomes the defect of first generation brushless electric machine.
Zero crossing detection of back EMF is the most ripe, most widely used current a kind of rotor-position signal detection method.But it has some inevitable shortcomings, as inaccurate in low speed commutation, cannot self-starting etc.In order to overcome these shortcomings, propose a kind of novel brushless DC motor without position sensor control system herein.It utilizes FPGA as main control chip, improves back-emf zero passage detection algorithm, completes the accurate calculating to the inverter commutation moment in full speed range; Also be integrated with voltage, current double closed-loop adjuster and PWM device simultaneously, realize the fine adjustment to control object rotating speed.In a word, system has the advantages that integrated level is high, adjusting speed accuracy is good, there is not the problem of program fleet and deadlock, meets the requirement of electric motor car to electric machine controller stable operation.
Such as application number is the brushless DC motor control system of " 201320099638.6 ", belong to Motor Control Field, this utility model is solve the conventional brushless DC electric machine control system complexity that single-chip microcomputer adds many kinds of interface equipments, is difficult to realize the all-digitized demodulator problem from speed ring to electric current loop.The utility model comprises DSP, power driving circuit, three-phase inverter, phase current sensing circuit and position transducer, the PWM instruction output end of DSP is connected with the input of power driving circuit, the output of power driving circuit is connected with the input of three-phase inverter, and the output of three-phase inverter is connected with the control end of brshless DC motor; The three-phase phase current of phase current sensing electric circuit inspection brshless DC motor, the phase current signal output of phase current sensing circuit is connected with the phase current signal input of DSP; Position transducer detects the rotor-position signal of brshless DC motor, and the rotor-position signal output of position transducer is connected with the rotor-position signal input of DSP.
And for example application number is a kind of brushless DC motor control system of " 201420545553.0 ", is applied to electric bicycle, comprises microcontroller circuit, drive circuit and Display panel circuit; Microcontroller circuit is by the first Power supply, and drive circuit is powered by second source; Microcontroller circuit is provided with electric power detection signal input port, power-assisted signal input port, turn signal input port, brake signal input port, mode conversion signal input port; Microcontroller circuit transmits PWM pulse-width signal, top drive singal and bottom drive singal to drive circuit, and drive circuit is to microcontroller circuit feedback speed collection signal and current acquisition signal, and drive circuit is connected with motor; Microcontroller circuit transmits clock signal, reset signal and data-signal by I/O interface to Display panel circuit.This utility model structure is simple, and production cost is low, and control precision is high, and easily promotes.
Summary of the invention
Technical problem to be solved by this invention provides a kind of back-emf zero passage detection electric machine control system for the deficiency of background technology.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of back-emf zero passage detection electric machine control system, comprises brshless DC motor, described brshless DC motor is provided with the motor speed detection module, A/D modular converter, back-emf zero cross detection circuit and the pwm modulator that connect successively; Described back-emf zero cross detection circuit comprises micro controller module, delay circuit module, mid-point voltage estimation block, zero passage detection module, FIPS phase shift block, commutation control module; Described micro controller module, zero passage detection module, FIPS phase shift block, commutation control module connect successively, described delay circuit module is connected with micro controller module and commutation control module respectively, and described mid-point voltage estimation block is connected between micro controller module and zero passage detection module.
As the further preferred version of a kind of back-emf of the present invention zero passage detection electric machine control system, described micro controller module adopts AVR series monolithic.
As the further preferred version of a kind of back-emf of the present invention zero passage detection electric machine control system, described brshless DC motor adopts the sextupole logarithm brshless DC motor of a rated voltage 48V, rated speed 3500r/min.
As the further preferred version of a kind of back-emf of the present invention zero passage detection electric machine control system, the chip model of described motor speed detection module is A3144.
As the further preferred version of a kind of back-emf of the present invention zero passage detection electric machine control system, the chip model of described A/D modular converter is TMS320LF240.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, the present invention has that integrated level is high, adjusting speed accuracy good;
2, the present invention utilizes AVR series monolithic as main control chip, improves back-emf zero passage detection algorithm, completes the accurate calculating to the inverter commutation moment in full speed range; Also be integrated with voltage, current double closed-loop adjuster and PWM device simultaneously, realize the fine adjustment to control object rotating speed, there is not the problem of deadlock, meet the requirement of electric motor car to electric machine controller stable operation.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of back-emf zero passage detection electric machine control system, comprises brshless DC motor, and described brshless DC motor is provided with the motor speed detection module, A/D modular converter, back-emf zero cross detection circuit and the pwm modulator that connect successively; Described back-emf zero cross detection circuit comprises micro controller module, delay circuit module, mid-point voltage estimation block, zero passage detection module, FIPS phase shift block, commutation control module; Described micro controller module, zero passage detection module, FIPS phase shift block, commutation control module connect successively, described delay circuit module is connected with micro controller module and commutation control module respectively, and described mid-point voltage estimation block is connected between micro controller module and zero passage detection module.
Wherein, described micro controller module adopts AVR series monolithic, described brshless DC motor adopts the sextupole logarithm brshless DC motor of a rated voltage 48V, rated speed 3500r/min, the chip model of described motor speed detection module is A3144, and the chip model of described A/D modular converter is TMS320LF240.
The non-conduction phase terminal voltage of motor is selected according to current commutation control signal by AVR control circuit, calculates virtual mid-point voltage and subtracts each other, obtain non-conduction opposite potential with mid-point voltage estimation circuit module.Utilize zero passage detection module to calculate non-conduction opposite potential zero cross signal, obtain the commutation signal at delayed zero cross signal phase angle through FIPS phase shift block logic, final generation commutation control signal.The zero cross signal error detection caused by terminal voltage acute variation in commutation process, module have also been devised a delay circuit module, makes the following period of time after commutation stop estimation back-emf.
The present invention has that integrated level is high, adjusting speed accuracy good; Utilize AVR series monolithic as main control chip, back-emf zero passage detection algorithm is improved, complete the accurate calculating to the inverter commutation moment in full speed range; Also be integrated with voltage, current double closed-loop adjuster and PWM device simultaneously, realize the fine adjustment to control object rotating speed, there is not the problem of deadlock, meet the requirement of electric motor car to electric machine controller stable operation.
Back-emf zero cross detection circuit by back-emf computation model, can be estimated and rotor-position signal, thus control inverter commutation, make frequency of supply synchronous with rotor speed.Speed regulator and current regulator constitute rotating speed, double current loop modulation device, the duty ratio of adjustment inverter output voltage, thus change the voltage be added on brushless DC motor stator, make motor follow rotational speed setup with the track floating of optimum.
AVR single chip has prefetched instruction function, namely when an execution instruction, in advance next instruction is got into, and call instruction can be performed within a clock cycle; Multiple accumulator type, data processing speed is fast; AVR single chip has 32 general purpose working registers, and being equivalent to has 32 viaducts, can fast passing; Response time is fast.AVR single chip has multiple fixing interrupt vector entry address, can respond interruption fast; AVR single chip power consumption is low.For typical power consumption situation, be 100nA when WDT closes, be more suitable for battery powered application apparatus; The minimum 1.8V of some devices gets final product work; AVR single chip security performance is good.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, makes a variety of changes under can also or else departing from the prerequisite of present inventive concept.
Claims (5)
1. a back-emf zero passage detection electric machine control system, comprises brshless DC motor, it is characterized in that: on described brshless DC motor, be provided with the motor speed detection module, A/D modular converter, back-emf zero cross detection circuit and the pwm modulator that connect successively; Described back-emf zero cross detection circuit comprises micro controller module, delay circuit module, mid-point voltage estimation block, zero passage detection module, FIPS phase shift block, commutation control module; Described micro controller module, zero passage detection module, FIPS phase shift block, commutation control module connect successively, described delay circuit module is connected with micro controller module and commutation control module respectively, and described mid-point voltage estimation block is connected between micro controller module and zero passage detection module.
2. a kind of back-emf zero passage detection electric machine control system according to claim 1, is characterized in that: described micro controller module adopts AVR series monolithic.
3. a kind of back-emf zero passage detection electric machine control system according to claim 1, is characterized in that: described brshless DC motor adopts the sextupole logarithm brshless DC motor of a rated voltage 48V, rated speed 3500r/min.
4. a kind of back-emf zero passage detection electric machine control system according to claim 1, is characterized in that: the chip model of described motor speed detection module is A3144.
5. a kind of back-emf zero passage detection electric machine control system according to claim 1, is characterized in that: the chip model of described A/D modular converter is TMS320LF240.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510464791.8A CN105119537A (en) | 2015-07-31 | 2015-07-31 | Counter potential zero-crossing detection motor control system |
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| CN201510464791.8A CN105119537A (en) | 2015-07-31 | 2015-07-31 | Counter potential zero-crossing detection motor control system |
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| CN105119537A true CN105119537A (en) | 2015-12-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317721A (en) * | 2023-05-19 | 2023-06-23 | 苏州云途半导体有限公司 | Zero-crossing detection circuit, motor driving circuit and brushless direct current motor system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729005A (en) * | 2009-11-27 | 2010-06-09 | 哈尔滨工业大学 | Method for controlling brushless DC motor based on FPGA |
| CN101729013A (en) * | 2009-11-27 | 2010-06-09 | 哈尔滨工业大学 | IP core of position sensor-free and brushless direct-current motor |
| US20150171780A1 (en) * | 2013-12-18 | 2015-06-18 | Samsung Electro-Mechanics Co., Ltd. | Apparatus for driving motor and controlling method thereof |
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2015
- 2015-07-31 CN CN201510464791.8A patent/CN105119537A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729005A (en) * | 2009-11-27 | 2010-06-09 | 哈尔滨工业大学 | Method for controlling brushless DC motor based on FPGA |
| CN101729013A (en) * | 2009-11-27 | 2010-06-09 | 哈尔滨工业大学 | IP core of position sensor-free and brushless direct-current motor |
| US20150171780A1 (en) * | 2013-12-18 | 2015-06-18 | Samsung Electro-Mechanics Co., Ltd. | Apparatus for driving motor and controlling method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李宪全等: "面向电动车的新型无位置传感器无刷直流电机控制系统设计", 《电子技术应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317721A (en) * | 2023-05-19 | 2023-06-23 | 苏州云途半导体有限公司 | Zero-crossing detection circuit, motor driving circuit and brushless direct current motor system |
| CN116317721B (en) * | 2023-05-19 | 2023-08-15 | 苏州云途半导体有限公司 | Zero-crossing detection circuit, motor driving circuit and brushless direct current motor system |
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