CN204215018U - A kind of brushless without position gyro winding back emf signal imitation device - Google Patents
A kind of brushless without position gyro winding back emf signal imitation device Download PDFInfo
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- CN204215018U CN204215018U CN201420646033.9U CN201420646033U CN204215018U CN 204215018 U CN204215018 U CN 204215018U CN 201420646033 U CN201420646033 U CN 201420646033U CN 204215018 U CN204215018 U CN 204215018U
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Abstract
The utility model belongs to instrument and meter and automatic detection system field, relate to a kind of brushless without position gyro winding back emf signal imitation device, comprise main control module, back-emf signal produces circuit, phase discriminator, freq converting circuit, current monitoring circuit, human-computer interaction module and control circuit; Human-computer interaction module, it is for main control module transmit operation instruction, also for showing the Detection Information after main control module transmission processing; Main control module, it is for producing control signal according to the operational order receiving human-computer interaction module transmission, and control signal sent to back-emf signal to produce circuit, also for obtaining phase discriminator, freq converting circuit and current monitoring circuit Detection Information, to go forward side by side row relax, the Detection Information after process is sent to human-computer interaction module; Back-emf signal produces circuit, and back-emf simulating signal for producing back-emf simulating signal according to receiving control signal, and is sent to control circuit by it; Accurate positioning control circuit fault fast.
Description
Technical field
The utility model belongs to instrument and meter and automatic detection system field, relates to a kind of brushless without position gyro winding back emf signal imitation device.
Background technology
In high accuracy gyroscope instrument, usually adopt position-sensor-free brushless, permanently excited direct current motor as drive motor.Gyro machine comprises motor body and control circuit two parts, and control circuit is the key component of gyro machine; Traditional direct current torque motor rotor position transducer makes the structure of motor become complicated, therefore, brushless without in position gyro motor, apply the technology that no-rotor position sensor controls, back-emf sensing circuit is utilized to replace sensor, to improve circuit and control complexity to reduce the complicacy of motor.Meanwhile, for meeting the particular/special requirement of gyro machine to rotating stability, in control circuit, also PHASE-LOCKED LOOP PLL TECHNIQUE is applied.
Motor body becomes closed-loop control with control circuit, and various signal also influences each other, and when breaking down, localization of fault is more difficult.This equipment can only judge that in testing process can gyro machine start, whether rotating speed is stablized at present, but localization of fault is not concrete, cannot judge motor body fault or control circuit fault.Once break down, need purchase intact gyro machine for Measuring error, but cost is higher, control circuit performance cannot be tested simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of brushless without position gyro winding back emf signal imitation device, solve the problems such as gyro machine detection means is deficient, localization of fault is difficult, achieve to the quick detection of gyro machine control circuit fault with accurately locate, integration degree is high, and extensibility is strong.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of brushless without position gyro winding back emf signal imitation device, comprises main control module, back-emf signal produces circuit, phase discriminator, freq converting circuit, current monitoring circuit, human-computer interaction module and control circuit;
Described human-computer interaction module, it is for main control module transmit operation instruction, also for showing the Detection Information after process that main control module sends;
Described main control module, it produces control signal for the operational order sent according to the human-computer interaction module received, and control signal sent to back-emf signal to produce circuit, also for obtaining the Detection Information of phase discriminator, freq converting circuit and current monitoring circuit, to go forward side by side row relax, the Detection Information after process is sent to human-computer interaction module;
Described back-emf signal produces circuit, and back-emf simulating signal for producing back-emf simulating signal according to the control signal received, and is sent to described control circuit by it;
Described control circuit, its for by receive described back-emf simulating signal as an alternative motor body produce back-emf signal, and the motor drive signal adjustable according to the change output pulse width of back-emf signal, deliver to back-emf signal again and produce circuit, form closed loop, brushless without position motors drived control process to simulate;
Described phase discriminator, it is for phase differential pulse signal between acquisition control circuit speed feedback and reference frequency, and according to following the tracks of convergence time and disturbance turnaround time in demodulation control circuit, thus generate main control module is sent to described control circuit speed stabilizing control accuracy Detection Information;
Described freq converting circuit, back-emf frequency analog signal, for gathering the back-emf frequency analog signal in described control circuit, is converted into motor body rotating speed by it, and the rotating stability Detection Information generating motor body sends to main control module;
Described current monitoring circuit, it is for according to motor body winding current in described control circuit, and by the race of electric current with non-linearly to analyze, thus the externally synchro control Performance Detection information that to generate in control circuit sends main control module.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described main control module comprises the first signal receiving unit, the first signal generation unit, the first signal transmitting unit, secondary signal receiving element, signal processing unit and secondary signal transmitting element;
Described first signal receiving unit, its operational order sent for receiving human-computer interaction module, and operational order is sent to the first signal generation unit;
Described first signal generation unit, control signal for generating corresponding control signal according to the operational order received, and is sent to the first signal transmitting unit by it;
Described first signal transmitting unit, it is for transmitting control signal to back-emf signal generation circuit;
Described secondary signal receiving element, its Detection Information sent for gathering described phase discriminator, freq converting circuit and current monitoring circuit, and Detection Information is sent signal processing unit;
Described signal processing unit, its Detection Information sent out for the treatment of described phase discriminator, freq converting circuit and current monitoring circuit, generates corresponding testing result and sends to secondary signal transmitting element;
Described secondary signal transmitting element, it is for sending testing result to human-computer interaction module.
Further, described human-computer interaction module comprises instruction generation unit and display unit;
Described instruction generation unit, it is for generating corresponding operational order according to user instruction;
Described display unit, it is for showing the testing result after receiving process.
Further, described main control module is ARM main control module.
Further, described ARM main control module is STM32F103C8T6C processor.
Further, described human-computer interaction module comprises instruction generation unit and display unit;
Described instruction generation unit, it is for generating corresponding operational order according to user instruction;
Described display unit, it is for showing the testing result after receiving process.
The beneficial effects of the utility model are: adopt universalization, intensive design philosophy, have built " simulation of gyro machine back-emf signal and control circuit performance test " platform, have been with good expansibility.Brushless without position motors Driving technique by studying, use Matlab and Multisim emulation, propose back-emf signal and produce algorithm, utilize DDS technical design back-emf signal to produce circuit, achieve the excitation of circuit for controlling motor; Use the data processing algorithm of high-speed signal acquisition technology and optimization, achieve the test of control circuit performance, saved testing cost simultaneously, decrease the malfunction elimination time, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is that the utility model is a kind of brushless without position gyro winding back emf signal imitation apparatus structure schematic diagram;
Fig. 2 is the structural representation of the utility model main control module;
Fig. 3 is the structural representation of the utility model human-computer interaction module;
Fig. 4 is the utility model gyro machine control circuit topological structure schematic diagram.
In accompanying drawing, the list of parts representated by each label is as follows:
10, main control module, 11, back-emf signal produces circuit, 12, phase discriminator, 13, freq converting circuit, 14, current monitoring circuit, 15, human-computer interaction module, 16, control circuit, 20, motor, 21, back-emf sensing circuit, 22, square wave forms circuit, 23, frequency synthesizer circuit, 24, phase-locked loop circuit, 25, speed setting unit, 26, commutating circuit, 27, velocity compensation circuit, 28, start-up circuit, 29, close power amplifier circuit, 101, first signal receiving unit, 102, first signal generation unit, 103, first signal transmitting unit, 104, secondary signal receiving element, 105, signal processing unit, 106, secondary signal transmitting element, 151 instruction generation units, 152 display units.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, for one is brushless without position gyro winding back emf signal imitation device, comprise main control module 10, back-emf signal produces circuit 11, phase discriminator 12, freq converting circuit 13, current monitoring circuit 14, human-computer interaction module 15 and control circuit 16;
Described human-computer interaction module 15, it is for main control module 10 transmit operation instruction, also for showing the Detection Information after process that main control module 10 sends;
Described main control module 10, it produces control signal for the operational order sent according to the human-computer interaction module 15 received, and control signal sent to back-emf signal to produce circuit 11, also for obtaining the Detection Information of phase discriminator 12, freq converting circuit 13 and current monitoring circuit 14, to go forward side by side row relax, the Detection Information after process is sent to human-computer interaction module 15;
Described back-emf signal produces circuit 11, and back-emf simulating signal for producing back-emf simulating signal according to the control signal received, and is sent to described control circuit 16 by it;
Described control circuit 16, its for by receive described back-emf simulating signal as an alternative motor body produce back-emf signal, and the motor drive signal adjustable according to the change output pulse width of back-emf signal, deliver to back-emf signal again and produce circuit 11, form closed loop, brushless without position motors drived control process to simulate;
Described phase discriminator 12, it is for phase differential pulse signal between acquisition control circuit speed feedback and reference frequency, and according to following the tracks of convergence time and disturbance turnaround time in demodulation control circuit 16, thus generate main control module 10 is sent to described control circuit 16 speed stabilizing control accuracy Detection Information;
Described freq converting circuit 13, back-emf frequency analog signal, for gathering the back-emf frequency analog signal in described control circuit 16, is converted into motor body rotating speed by it, and the rotating stability Detection Information generating motor body sends to main control module 10;
Described current monitoring circuit 14, it is for according to motor body winding current in described control circuit 16, and by the race of electric current with non-linearly to analyze, thus the externally synchro control Performance Detection information that to generate in control circuit sends main control module.
As shown in Figure 2, for the structural representation of the utility model main control module, described main control module 10 comprises the first signal receiving unit 101, first signal generation unit 102, first signal transmitting unit 103, secondary signal receiving element 104, signal processing unit 105 and secondary signal transmitting element 106;
Described first signal receiving unit 101, its operational order sent for receiving human-computer interaction module 15, and operational order is sent to the first signal generation unit 102;
Described first signal generation unit 102, control signal for generating corresponding control signal according to the operational order received, and is sent to the first signal transmitting unit 103 by it;
Described first signal transmitting unit 103, it is for transmitting control signal to back-emf signal generation circuit 11;
Described secondary signal receiving element 104, Detection Information for the Detection Information gathering described phase discriminator 12, freq converting circuit 13 sends with current monitoring circuit 14, and is sent signal processing unit 105 by it;
Described signal processing unit 105, it, for the treatment of described phase discriminator 12, freq converting circuit 13 and the Detection Information of current monitoring circuit 14, generates corresponding testing result and sends to secondary signal transmitting element 106;
Described secondary signal transmitting element 106, it is for sending testing result to human-computer interaction module 15.
As shown in Figure 3, be the utility model human-computer interaction module structural representation, described human-computer interaction module 15 comprises instruction generation unit 151 and display unit 152;
Described instruction generation unit 151, it is for generating corresponding operational order according to user instruction;
Described display unit 152, it is for showing the testing result after receiving process.
Preferably, described main control module 10 is ARM main control module, and described ARM main control module is STM32F103C8T6C processor, and this chip is the kernel based on ARM Cortex-M3.Maximum clock frequency reaches 72MHZ, can process mass data in real time, and inside is with the A/D converter in 8 sheets and multiple UART serial communication interface, improves the integrated level of system greatly.
Described gyro machine comprises motor body and control circuit 16, and described motor body and described control circuit 16 are closed-loop control,
Shown in Fig. 4, it is the utility model gyro machine control circuit topological structure schematic diagram.
The control circuit of described gyro machine comprises motor 20, two back-emf sensing circuits 21, two square waves and forms circuit 22, frequency synthesizer circuit 23, commutating circuit 26, phase-locked loop circuit 24, speed setting unit 25, velocity compensation circuit 27, close power amplifier circuit 29 and start-up circuit 28; In described control circuit, the input end of four base stages of H bridge is connected to four I/O mouths of processor to detect the Real Time Drive state of motor 20, wherein, motor 20 is the motor body in gyro machine, the input of described motor 20 produced by back-emf the back-emf simulating signal of circuit substitute, produce 0 ~ 500Hz phase-constant difference according to its driving condition be the back-emf signal of 90 ° and produce according to certain control law, four tunnel feedback signals are connected to four input ends of back-emf sensing circuit 21, thus form loop control;
Four tunnel feedback signals of described motor 20 are connected with the input end of each described back-emf sensing circuit 21 between two, for inputting the back-emf signal that described motor produces according to main control module 10 to back-emf sensing circuit 21; The input end that output terminal and each described square wave of each described back-emf sensing circuit 21 form circuit 22 is connected, after carrying out filtering according to back-emf sensing circuit 21 pairs of back-emf signals, generate stable high level and low level pulse signal; The output terminal that each described square wave forms circuit 22 is connected with the input end of commutating circuit 26, frequency synthesizer circuit 23 respectively, for being reversed in the direction in two stable high level or low level pulse signal, for the pulse signal by two stable high level or low level pulse signal syntheses single-frequency; The input end of described phase-locked loop circuit 24 is connected with the output terminal of speed setting unit 25, frequency synthesizer circuit 23 respectively, when described phase-locked loop circuit 24 is applied to motor 20 speed stabilizing, voltage controlled oscillator generally replaced by power amplifier and motor body, backfeed loop is Hall rate signal, due to the integration that phase place is frequency, phaselocked loop carries out phase compare, and motor speed therefore can be made to control to reach very high precision.
The input end of described velocity compensation circuit 27 is connected with the output terminal of phase-locked loop circuit 24, commutating circuit 26 respectively, carries out phase compensation for arranging according to velocity compensation circuit 27 to reference frequency signal; Being connected with the output terminal of close power amplifier circuit 29, commutating circuit respectively of the output terminal of described start-up circuit 28, for providing stable trigger voltage to close power amplifier circuit 29 and commutating circuit 26; Input end, the output terminal of described close power amplifier circuit 29 are connected with four tunnel feedback signals of motor 20 with velocity compensation circuit 27 respectively, send to motor 20 after the stable amplification of the tach signal for sending according to velocity compensation circuit 27.
In this example, back-emf sensing circuit 21 comprises low-pass filter, zero-crossing comparator, photoelectric coupling, two opposite potential of motor obtain detection waveform through dividing potential drop, second order active low-pass filter, zero-crossing comparator after terminal voltage is drawn, to described detection waveform through square wave generative circuit 22, make to generate stable high level and low level pulse signal.Two pulse signals are through the specific single-frequency of frequency synthesis, through phase-locked loop circuit 24, the rotating speed of the gyro machine set by rotating speed unit, ensures that the signal frequency exported controls to specific reference frequency.When the generation phase differential pulse of the rotating speed of gyro machine and reference frequency, velocity compensation circuit 27 provides contrary pulse duration frequency signal to carry out phase compensation to reference frequency signal according to commutating circuit, ensure that stability and the accuracy of reference frequency signal.Described start-up circuit 28 to close power amplifier circuit 29, commutating circuit 26 what provide is square wave to voltage, have larger capacitive load, be convenient to the short module intermittent work that gives the correct time, power consumption is little.Described close power amplifier circuit 29, because of advantages such as its loss is little, efficiency is high, pass bands, amplifies as the pulse signal of output amplifier to input, provides enough power to motor 20.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. one kind brushless without position gyro winding back emf signal imitation device, it is characterized in that, comprise main control module (10), back-emf signal produces circuit (11), phase discriminator (12), freq converting circuit (13), current monitoring circuit (14), human-computer interaction module (15) and control circuit;
Described human-computer interaction module (15), it is for main control module (10) transmit operation instruction, also for showing the Detection Information after process that main control module (10) sends;
Described main control module (10), it produces control signal for the operational order sent according to the human-computer interaction module (15) received, and control signal sent to back-emf signal to produce circuit (11), also for obtaining the Detection Information of phase discriminator (12), freq converting circuit (13) and current monitoring circuit (14), to go forward side by side row relax, the Detection Information after process is sent to human-computer interaction module (15);
Described back-emf signal produces circuit (11), and back-emf simulating signal for producing back-emf simulating signal according to the control signal received, and is sent to described control circuit (16) by it;
Described control circuit (16), its for by receive described back-emf simulating signal as an alternative motor body produce back-emf signal, and the motor drive signal adjustable according to the change output pulse width of back-emf signal, deliver to back-emf signal again and produce circuit (11), form closed loop, brushless without position motors drived control process to simulate;
Described phase discriminator (12), it is for acquisition control circuit (16) phase differential pulse signal between speed feedback and reference frequency, and according to following the tracks of convergence time and disturbance turnaround time in demodulation control circuit, thus generate main control module (10) is sent to described control circuit (16) speed stabilizing control accuracy Detection Information;
Described freq converting circuit (13), it is for gathering the back-emf frequency analog signal in described control circuit (16), back-emf frequency analog signal is converted into motor body rotating speed, and the rotating stability Detection Information generating motor body sends to main control module (10);
Described current monitoring circuit (14), it is for according to motor body winding current in described control circuit (16), by to the race of electric current with non-linearly to analyze, thus the externally synchro control Performance Detection information that to generate in control circuit (16) sends main control module (10).
2. one according to claim 1 is brushless without position gyro winding back emf signal imitation device, it is characterized in that, described main control module (10) comprises the first signal receiving unit (101), the first signal generation unit (102), the first signal transmitting unit (103), secondary signal receiving element (104), signal processing unit (105) and secondary signal transmitting element (106);
Described first signal receiving unit (101), its operational order sent for receiving human-computer interaction module (15), and operational order is sent to the first signal generation unit (102);
Described first signal generation unit (102), control signal for generating corresponding control signal according to the operational order received, and is sent to the first signal transmitting unit (103) by it;
Described first signal transmitting unit (103), it is for transmitting control signal to back-emf signal generation circuit (11);
Described secondary signal receiving element (104), Detection Information for the Detection Information gathering described phase discriminator (12), freq converting circuit (13) sends with current monitoring circuit (14), and is sent signal processing unit (105) by it;
Described signal processing unit (105), its Detection Information sent out with current monitoring circuit (14) for the treatment of described phase discriminator (12), freq converting circuit (13), generates corresponding testing result and sends to secondary signal transmitting element (106);
Described secondary signal transmitting element (106), it is for sending testing result to human-computer interaction module (15).
3. one according to claim 2 is brushless is characterized in that without position gyro winding back emf signal imitation device, and described main control module (10) is ARM main control module.
4. one according to claim 3 is brushless is characterized in that without position gyro winding back emf signal imitation device, and described ARM main control module is STM32F103C8T6C processor.
5. one according to claim 1 is brushless is characterized in that without position gyro winding back emf signal imitation device, and described human-computer interaction module (15) comprises instruction generation unit (151) and display unit (152);
Described instruction generation unit (151), it is for generating corresponding operational order according to user instruction;
Described display unit (152), it is for showing the testing result after receiving process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420646033.9U CN204215018U (en) | 2014-10-30 | 2014-10-30 | A kind of brushless without position gyro winding back emf signal imitation device |
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| CN201420646033.9U CN204215018U (en) | 2014-10-30 | 2014-10-30 | A kind of brushless without position gyro winding back emf signal imitation device |
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| CN204215018U true CN204215018U (en) | 2015-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330735A (en) * | 2014-10-30 | 2015-02-04 | 李国栋 | Counter potential signal simulating device and method of brushless position-less gyro motor |
-
2014
- 2014-10-30 CN CN201420646033.9U patent/CN204215018U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330735A (en) * | 2014-10-30 | 2015-02-04 | 李国栋 | Counter potential signal simulating device and method of brushless position-less gyro motor |
| CN104330735B (en) * | 2014-10-30 | 2018-01-05 | 李国栋 | A kind of brushless no position gyro winding back emf signal imitation device and method |
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Granted publication date: 20150318 Termination date: 20151030 |
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