CN203537285U - Digital multi-motor control platform based on single-chip microcomputer - Google Patents
Digital multi-motor control platform based on single-chip microcomputer Download PDFInfo
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- CN203537285U CN203537285U CN201320680173.3U CN201320680173U CN203537285U CN 203537285 U CN203537285 U CN 203537285U CN 201320680173 U CN201320680173 U CN 201320680173U CN 203537285 U CN203537285 U CN 203537285U
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Abstract
The utility model discloses a digital multi-motor control platform based on a single-chip microcomputer comprising a central processor, a communication chip, a host computer, and a power supply module 1 connected with the central processor. The host computer is connected with an input end of the central processor by the communication chip. An output end of the central processor is connected with a power amplifier by an optical coupling module, and is also connected with a speed measuring sensor, a vibration sensor, and a temperature sensor. An input end of the power amplifier is connected with a power module 2, and an output end of the power amplifier is connected with a DC motor, a four-phase stepping motor, and a three-phase reaction stepping motor. The digital multi-motor control platform based on the single-chip microcomputer has advantages of reasonable design, smart function, convenient operation, good reliability, high system integration, and convenient popularization and application.
Description
Technical field
The utility model relates to Motor Control Field, is specifically related to a kind of SCM Based digital multi_motor control platform.
Background technology
In today of electric era, the motors such as DC motor, three phase alternating current motor and four phase step motor are widely used in various productive lifes field, and according to statistics, existing 90% power source comes from motor, and motor and people's life is closely bound up.Along with striding forward of modernization paces, people are originally high to the demand of automation, are that Electric Machine Control is towards more complicated field development.
Electric Machine Control is a maturation and technology widely, and its development has benefited from the later development of microelectric technique, power electronic technology, sensor technology, permanent magnetic material technology etc.Electric Machine Control can be divided into simple control and the large class of complex control two, simple control be to motor start, braking, rotating control and sequential control, complex control is that the physical quantitys such as rotating speed to motor, corner, torque, voltage, electric current are controlled.Make and break, rotating how to control motor has been a very old topic, present research is more prone to how reasonably control motor, pay attention to the coefficient of safety of machine operation process, as comprise the monitoring of motor temperature, rotating speed, Vibration Condition, and be adjusted to desired value, its rate of failure is diminished, make its prolongation in useful life etc. aspect.
DC motor because rotor rotates, usually can cause the vibration of machine integral body in the course of the work, for fear of machine, because vibrating, excessively causes that damage usually needs with transducer, its service behaviour to be monitored.Rotor inertia is low, positioning precision is high because having for stepping motor, without features such as accumulated errors, be suitable for very much in open loop position control system, during its work, the perfectly straight stream exciting current of rotor winding, can produce so-called " copper loss "; Although the magnetic flux that rotor core is passed through is direct current, exist and relatively move with stator core respectively, stator core will produce " iron loss "; If be with load after stator winding induction AC electromotive force, stator winding will have electric current to pass through, and stator winding also will produce " copper loss "; Also there is pivoting friction in the rotating shaft of rotor and rotatable parts, and generation " frictional dissipation ".All there is the form with heat in all losses, will make temperature rising, the especially rotor portion of motor internal, and radiating condition is poor compared with the radiating condition of other parts.During motor work, because making internal temperature, various loss meetings raise, especially the most typical with the temperature of rotor, this will affect the insulation property of generator insulating material, in order to guarantee the normal reliable work of motor, just must measure the temperature of motor rotor.
Yet for meeting different functions, often there are a plurality of moving components in real system simultaneously, conventional method is an independently corresponding control system of function, although modularity is fine like this, but taken a large amount of system resource and space, also reduced to a certain extent the reliability of system.As there are 3 moving components in certain system, be respectively a phase reaction formula stepping motor, the control of a direct current machine and a four-phase stepper motor, prior art just can not finely realize the control of high integration, high reliability and simplification.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, and a kind of SCM Based digital multi_motor control platform is provided.It is reasonable in design, easy to operate, and circuit is simple, good reliability, and level of integrated system is high, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of SCM Based digital multi_motor control platform, it is characterized in that: comprise central processing unit, communication chip, host computer and the power module one being connected with described central processing unit, described host computer is connected with central processing unit input by communication chip, the output of described central processing unit is connected with power amplifier by optical coupling module, the output of described central processing unit is also connected to tachogenerator, vibrating sensor and temperature sensor, described power amplifier input is connected to power module two, described power amplifier output and DC motor, four phase step motor is connected with phase reaction formula motor.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: described central processing unit adopts C8051F020 single-chip microcomputer.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: described communication chip is MAX490 serial ports conversion chip.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: described host computer is industry control desktop computer.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: described power module one is 5V DC power supply.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: the direct current machine bridge-type drive circuit of described power amplifier for being comprised of field effect transistor and diode.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: the IRF840 power MOSFET that described field effect transistor WeiIR company produces.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: described power module two is 27V power supply.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: described tachogenerator is that ZLS-Px surveys speed probe.
Above-mentioned a kind of SCM Based digital multi_motor control platform, is characterized in that: described vibrating sensor adopts CZ891 Generator Vibration monitoring sensor.
The utility model compared with prior art has the following advantages:
1, the utility model adopts temperature sensor, speed probe and vibrating sensor to carry out quantitative detection to the temperature of rotor of motor, motor speed and mechanical oscillation, and by ipc monitor parameters, makes system safety work, and reliability is high.
2, the utility model has only just been realized the driving control of three motors with a single-chip microcomputer, adopts parallel control.The PWM ripple of certain sequential is pressed in I/O port output by upper computer software control single chip computer, controls motor winding power on/off, is completed the commutation of stepping motor by single-chip microcomputer, and in the situation that system resource is enough, employing parallel control can simplified design circuit.
In sum, the utility model is reasonable in design, and flexible function is easy and simple to handle, good reliability, and level of integrated system is higher, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is general structure block diagram of the present utility model.
Description of reference numerals:
1-central processing unit; 2-communication chip; 3-host computer; 4-power module one; 5-optical coupling module;
6-power amplifier; 7-power module two; 8-DC motor; 9-four phase step motor;
10-phase reaction formula motor; 11-tachogenerator; 12-vibrating sensor; 13-temperature sensor.
Embodiment
As shown in Figure 1, the utility model comprises central processing unit 1, communication chip 2, host computer 3 and the power module 1 being connected with described central processing unit 1, described host computer 3 is connected with central processing unit 1 input by communication chip 2, the output of described central processing unit 1 is connected with power amplifier 6 by optical coupling module 5, the output of described central processing unit 1 is also connected to tachogenerator 11, vibrating sensor 12 and temperature sensor 13, described power amplifier 6 inputs are connected to power module 27, described power amplifier 6 outputs and DC motor 8, four phase step motor 9 is connected with phase reaction formula motor 10.
Wherein, tachogenerator 11 is ZLS-Px tachogenerator, and whether transducer has 2 orthogonal measuring signal outputs can measure the speed of both direction simultaneously, not only can perceive measured body and stop, and can perceive the direction of motion of measured body.Transducer is fixed on and on stable support, can measures corner and the rotating speed that rotates measured body, and it is non-contacting transducer, can measure the object that cannot contact.Outside decapacitation measuring speed, all right recognition start-up, shutdown and the direction of motion.
Vibrating sensor 12 adopts CZ891 Generator Vibration monitoring sensors, by screw, is arranged on motor bearing seat or casing, measures motor oscillating situation, the abnormal vibration showing when finding electrical fault.
In the present embodiment, described central processing unit 1 adopts C8051F020 single-chip microcomputer.This MCU Instruction execution speed is greatly improved, and peak velocity reaches 25 MIPS; Except 8051 port of 4 standards, also there are 4 additional ports, totally 64 general purpose I/O ports; All I/O ports all can be configured to open-drain or recommend output, further to low-power consumption application development; Introduce digital crossing switch, allow user to combine voluntarily general purpose I/O port and required digital resource; There is dual serial UART interface, 5 16 general purpose timers, 5 comparison capture modules; There is in house dog in sheet, sheet VDD monitor in temperature sensor and sheet, during use almost without extending out; Can pass through JTAG Interface realization software on-line debugging function.C8051F020 single-chip microcomputer is clear superiority at aspects such as execution speed, system resources with it, becomes the ideal selection of this multi-motor control system.
In the present embodiment, described communication chip 2 is MAX490 serial ports conversion chip.According to the communications protocol with host computer, communication interface adopts two-way difference RS-422 serial communications of standard, operating voltage is 5 V, baud rate is that 38400 bit/s.C8051F020 Series MCU inside has two enhancement mode full duplex UART, communications protocol is RS-232, and operating voltage is also 5 V.Therefore selected MAX490 device, MAX490 chip can transfer the RS422 differential signal of host computer to the rs 232 serial interface signal of single-chip microcomputer easily.
In the present embodiment, described host computer 3 is industry control desktop computer, adopt Embedded Hardware Platform and linux(or uClinux) operating system, coordinate the Embedded Configuration Software of autonomous property right, for client provides a kind of with better function, system cost is lower, reliability is stronger selection.Comprise that color touch screen display shows the ancillary equipment such as (5.7-12.1 inch), Ethernet interface and dual serial communication interface, 8 road analog inputs, 4 way switch amounts outputs, built-in MIC and miniature loudspeaker, be equivalent to a personal computer special, miniaturization, more powerful in function, be more suitable for applying under industry, business environment.Integrated design guarantees global reliability, the problem that does not exist general computer fittings to damage, safeguard.
In the present embodiment, described power module 1 is 5V DC power supply, and described power module 27 is 27V power supply, adopts the exchange conversion DC circuit of multichannel output.In Power Management Design process, for preventing, between various power supplys, interfere with each other, especially simulate large power supply digital circuit part is produced to noise effect, taken into full account the demand of power filter.When circuit design, power supply is done to filtering and process, control signal is done to photoelectricity isolation processing.Input power is used to independent connector and independent power-supply filter.To the input of signal and powerful output, also use respectively connector to carry out physical isolation.During motor rotation, maximum instantaneous electric current can be up to 2A.For reducing high-power output, digital circuit is exerted an influence, when design, take effective interference protection measure, as high-power output signal and digital signal are taked to effective photoelectricity isolation.
In the present embodiment, described power amplifier 6 is the direct current machine bridge-type drive circuit being comprised of field effect transistor and diode, the IRF840 power MOSFET that field effect transistor WeiIR company produces.Therefore single-chip microcomputer output signal is 3.3 V Transistor-Transistor Logic levels, and this actuating force concerning motor is inadequate, adopts field effect transistor after power amplification circuit, is used for drive motors.The driving of native system stepping motor has adopted univoltage type of drive, adopt bridge circuit, this bridge circuit is applicable to for doing digital control very much, only need single-chip microcomputer according to the shutoff of opening of certain logic and sequencing control switching tube, just can realize the rotating of direct current machine, also can regulate the duty ratio of motor winding energising, thereby reach the object that changes motor speed.The motor rotation speed of system requirements is lower, does not consider high frequency band loading capability, for solving resonance problem, adopts PWM ripple to power to motor, by changing the resonance point of motor, reaches the object that reduces vibration.
In actual use procedure, DC motor 8, when four phase step motor 9 and phase reaction formula motor 10 start work, tachogenerator 11, vibrating sensor 12 and temperature sensor 13 gather respectively the rotating speed of each motor, vibration and temperature signal, being transferred to central processing unit 1 analyzes, and with telecommunication cable, be transferred to host computer 3 by central processing unit 1, staff monitors in real time each motor service data on host computer 3, abnormal when there being any one parameter to occur, just can operate corresponding control parameters value, control single chip computer is according to certain logic and sequencing control optical coupling module 5 and power amplifier 6 work, the final rotating of controlling each motor, turn angle, speed governing, temperature adjustment, adjust vibration and switch.By rewriting host computer 3 softwares, can be directly used in the driving of other motor, realize the many objects of a control.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection range of technical solutions of the utility model.
Claims (10)
1. a SCM Based digital multi_motor control platform, it is characterized in that: comprise central processing unit (1), communication chip (2), host computer (3) and the power module one (4) being connected with described central processing unit (1), described host computer (3) is connected with central processing unit (1) input by communication chip (2), the output of described central processing unit (1) is connected with power amplifier (6) by optical coupling module (5), the output of described central processing unit (1) is also connected to tachogenerator (11), vibrating sensor (12) and temperature sensor (13), described power amplifier (6) input is connected to power module two (7), described power amplifier (6) output and DC motor (8), four phase step motor (9) is connected with phase reaction formula motor (10).
2. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: described central processing unit (1) adopts C8051F020 single-chip microcomputer.
3. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: described communication chip (2) is MAX490 serial ports conversion chip.
4. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: described host computer (3) is industry control desktop computer.
5. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: described power module one (4) is 5V DC power supply.
6. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: the direct current machine bridge-type drive circuit of described power amplifier (6) for being formed by field effect transistor and diode.
7. according to a kind of SCM Based digital multi_motor control platform claimed in claim 6, it is characterized in that: the IRF840 power MOSFET that described field effect transistor WeiIR company produces.
8. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: described power module two (7) is 27V power supply.
9. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: described tachogenerator (11) is ZLS-Px survey speed probe.
10. according to a kind of SCM Based digital multi_motor control platform claimed in claim 1, it is characterized in that: described vibrating sensor (12) adopts CZ891 Generator Vibration monitoring sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320680173.3U CN203537285U (en) | 2013-10-31 | 2013-10-31 | Digital multi-motor control platform based on single-chip microcomputer |
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| CN201320680173.3U CN203537285U (en) | 2013-10-31 | 2013-10-31 | Digital multi-motor control platform based on single-chip microcomputer |
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| CN203537285U true CN203537285U (en) | 2014-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119541A (en) * | 2015-09-28 | 2015-12-02 | 中国矿业大学 | DSP (digital signal processor)-based stepper motor control system |
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2013
- 2013-10-31 CN CN201320680173.3U patent/CN203537285U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119541A (en) * | 2015-09-28 | 2015-12-02 | 中国矿业大学 | DSP (digital signal processor)-based stepper motor control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20161031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |