CN202713218U - All-digital driving device of three-phase hybrid stepping motor - Google Patents
All-digital driving device of three-phase hybrid stepping motor Download PDFInfo
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- CN202713218U CN202713218U CN201220440806.9U CN201220440806U CN202713218U CN 202713218 U CN202713218 U CN 202713218U CN 201220440806 U CN201220440806 U CN 201220440806U CN 202713218 U CN202713218 U CN 202713218U
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Abstract
The utility model discloses an all-digital driving device of a three-phase hybrid stepping motor. The driving device uses tms320f28030 as a master control unit, IGCM15F60GA as an inverter bridge, a multiplexed output flyback switching power supply as an auxiliary power supply, and Nixie tubes and buttons as man-machine interaction interfaces; and the master control unit comprises ADC sampling, PWM output, SPI output transmission and QEP pulse reception. The all-digital driving device of the three-phase hybrid stepping motor in the utility model has good control performance, low cost, and friendly man-machine interaction interfaces, and a plurality of alarms can be set inside, satisfying the requirements of medium- and low-end application occasions.
Description
Technical field
The utility model relates to a kind of digital electric machine actuating device, particularly relates to the drive unit of three-phase hybrid stepping motor in a kind of Digit Control Machine Tool industry.
Background technology
Three-phase Hybrid Stepping Motors is a kind of electromechanical compo that electric impulse signal is converted to response angular displacement or displacement of the lines, and whenever pulse of input, motor just moves a step.As digital executive component, stepping motor has simple in structure, and control is convenient, does not have the characteristics of accumulated error, mainly adopts open loop control.But stepping motor also has its intrinsic defective, and is large such as low speed vibrations, exports at a high speed electromagnetic torque little etc.
The control mode that drives traditional Three-phase Hybrid Stepping Motors generally adopts univoltage driving, high-low pressure to drive, chopping wave constant current drives or frequency modulation and voltage modulation drives.These control modes all have its advantage, but all can not well alleviate the inherent shortcoming of stepping motor.
Summary of the invention
For addressing the above problem, the purpose of this utility model is to provide a kind of can better alleviate the stepping motor inherent shortcoming, and the driving device for step-by-step at excellent operation interface is provided.This drive unit is a kind of full digital control device, can receive the control signal that host computer sends, and according to control signal stepping motor is done corresponding control.This drive unit has good Man Machine Interface, and the user can regulate the drive unit parameter according to actual conditions, reaches best control performance.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to be:
A kind of digital three-phase hybrid stepping motor drive unit, it is characterized in that, described drive unit comprises main power source module, accessory power supply module, current sample module, Intelligent Power Module IGCM15F60GA, master control arithmetic element tms320f28030, button display unit and memory; Wherein, described tms320f28030 output pwm signal, IGCM15F60GA receives the pwm signal of tms320f28030 output, and output three phase sine AC power drives three-phase hybrid stepping motor; The output of IGCM15F60GA arranges the current sample module.
In the described drive unit, the master control arithmetic element adopts tms320f28030, and Intelligent Power Module (IPM) adopts IGCM15F60GA.By receiving the pwm signal of control arithmetic element tms320f28030 output, IGCM15F60GA realizes that the direct current main power source is converted to the three phase sine AC power, drives three-phase hybrid stepping motor.
Described tms320f28030 is by the ADC(D/A converter module) connection current sample module, by the SPI(Serial Peripheral Interface (SPI)) connected storage carries out parameter and motor position is preserved, by QEP(quadrature coding pulse circuit) connect host computer and carry out signal and receive, connect the button display unit by the I/O mouth and carry out button and Graphics Processing.
Described main power source module input civil power is to Intelligent Power Module and accessory power supply module output direct current main power source.Main power source module is comprised of uncontrollable single-phase rectification bridge and filter capacitor.Adopt uncontrollable rectification, obtain more stably direct voltage by large capacitor filtering.
Described accessory power supply module provides required operating voltage for control module and Intelligent Power Module.Accessory power supply is inverse-excitation type switch power-supply, and is different for satisfying modules required voltage grade, and Switching Power Supply is designed to multichannel output, and its output voltage grade is :+5V ,+15V ,-15V.
Described current sample module comprises sampling resistor, the isolating difference amplifying circuit on the Intelligent Power Module output.The output current of current sample module samples drive unit, and it is made corresponding displacement amplify processing, carry out current sample for control module and carry out the prime preparation.
In the drive unit of the present utility model, the core of control module adopts tms320f28030, is a kind of dsp chip.This chip is realized various data sampling and processings and output: this chip is realized current closed-loop control by to the output current sampling; This chip receives the host computer signal, and stepping motor position and speed are controlled accurately; This chip and memory communication realize the preservation of parameter and motor position; The demonstration that this chip also detects button and control charactron realizes friendly Man Machine Interface.
Described drive unit, the control technology that tms320f28030 adopts segmentation and SVPWM to combine realizes current closed-loop control.
Digital three-phase hybrid stepping motor drive unit of the present utility model, adopt Subdivision driving technology, revise the segmentation number by button, can realize any segmentation theoretically, compare with traditional Design of Stepper Motor Control Circuit, alleviated preferably the inherent shortcoming of stepping motor.Good man-machine interface had both been accelerated the production debug process, provided a kind of mode to regulate the optimum performance that parameter realizes drive unit according to actual conditions to the user again.The master control arithmetic element adopts cheap chip to realize, and is with low cost, satisfied the demand of digital control system low and middle-end application scenario.Digital three-phase hybrid stepping motor drive unit of the present utility model also can provide multiple control modes, and the user can according to own needs, select accordingly.
Below in conjunction with specific embodiment the utility model is described in detail.Protection range of the present utility model is not limited with embodiment, but is limited by claim.
Description of drawings
The system hardware structure schematic diagram of the digital three-phase hybrid stepping motor drive unit of Fig. 1.
Fig. 2 accessory power supply modular circuit structural representation.
PWM interrupt routine flow chart in Fig. 3 drive unit of the present utility model.
Embodiment
According to digital three-phase hybrid stepping motor drive unit of the present utility model, referring to Fig. 1, Fig. 2 and Fig. 3.Described drive unit mainly is divided into the two large divisions on the function: power section and control section.Power section is converted into the required three-phase alternating current of three-phase hybrid stepping motor with civil power, and provides accessory power supply for control section works.Control section is implemented control by pwm pulse signal to power section, makes required voltage and the frequency of drive unit output three-phase hybrid stepping motor.
Referring to Fig. 1, described power section is strong power part, mainly comprises main power source, accessory power supply and Intelligent Power Module.
Main power source module provides main power source for Intelligent Power Module, and for the accessory power supply power supply, is a direct voltage.Drive unit of the present utility model adopts uncontrollable single-phase rectification bridge and large capacitor filtering to realize.Described uncontrollable single-phase rectification bridge is converted to direct voltage to single-phase 220V alternating current, and is converted to comparatively stably direct voltage by large capacitor filtering.
Referring to Fig. 2, described accessory power supply module adopts inverse-excitation type switch power-supply to realize, its output voltage be+5V ,+15V and-15V.Chief component comprises transformer, power switch pipe, current rectifying and wave filtering circuit and feedback control circuit.In the described accessory power supply module, after the main power source of the input process transformer transformation, export steady direct voltage through rectifying and wave-filtering.Described feedback control circuit is made of control chip TOP224, TL431 and light lotus root, TL431 and light lotus root consist of feedback circuit, TOP224 is exported in switch power source output voltage fluctuation amplification, TOP224 receiving feedback signals and output pwm signal, power ratio control switching tube conducting duty ratio realizes the accessory power supply output voltage stabilization.
Described Intelligent Power Module is converted to required three-phase alternating voltage to main power source.Intelligent Power Module adopts IGCM15F60GA, receives the pwm signal by the isolation of light lotus root, controls the turn-on and turn-off of switch mosfet pipe in the inner three-phase commutation bridge.By the combination of different switch mosfet pipe turn-on and turn-off, the voltage of output different frequency and amplitude.
The output current of described Intelligent Power Module is partly done prime for the current sample of control circuit part and is prepared through resistance sampling.
Referring to Fig. 1, described control section is divided into current sample module, master control arithmetic element, host computer, parameter and motor position storage unit (memory) and button display unit.Described control section is realized current closed-loop control by current sample, master control arithmetic element and PWM output.
Described current sample is by the sampling resistor sample rate current, again through the voltage on the linear light lotus root conversion sampling resistor, through giving the D/A converter module (ADC) of master control arithmetic element after the integrated operational amplifier amplification displacement.The voltage of input D/A converter module is 0 ~ 3.3V, and 1.65V represents the 0A electric current, and 0V and 3.3V represent respectively negative maximum current and positive maximum current.
Described master control arithmetic element is tms320f28030, and the control technology that adopts segmentation and SVPWM to combine realizes current closed-loop control.Its PWM interrupt routine flow process is referring to Fig. 3, and at first, described master control arithmetic element through Coordinate Conversion, realizes d-q shaft current solution lotus root according to the current value of current sampling circuit gained and current phase angle.Current value behind the solution lotus root and the error of reference value are through the PID modulators modulate, and the value after the modulation is exported the PWM ripple of corresponding duty ratio through the SVPWM computing.After the PWM ripple is isolated by 74HCT245 level match and light lotus root, the input Intelligent Power Module.
At control section, tms320f28030 connects the current sample module by the ADC module, carry out parameter and motor position preservation by the SPI connected storage, connect host computer by QEP and carry out the signal reception, carry out button and Graphics Processing by I/O mouth connection keyboard and display.
Communication interface with pc receives signal and the P-pulse instruction of host computer, is connected with the QEP interface of master control arithmetic element, has realized the PC control drive unit, the control strategy of drive unit control step motor.
Described parameter and motor position storage unit are an external memory storage, are connected with the SPI interface of master control arithmetic element, have realized the preservation of parameter and motor position.
Described button display unit is comprised of 4 buttons and 4 seven segment numerical display tubes.Described master control arithmetic element sends high-low level by the I/O mouth, through after the level transferring chip, and the demonstration of 4 seven segment numerical display tubes of control, 4 seven segment numerical display tubes adopt and refresh in turn display mode.The high-low level of 4 button outputs is through level transferring chip input master control arithmetic element I/O mouth, and the high-low level of described master control arithmetic element sampled I/O mouth carries out corresponding control.
In the described drive unit, by hardware and software multiple warning is set, mainly contains power model warning, the warning of hardware overcurrent, the warning of software overcurrent, main circuit undervoltage warning and main circuit over voltage alarm.
Adopt digital Three-phases Hybrid Stepper Motor Driver of the present utility model, have good control performance and friendly man-machine interface, the user can regulate parameter to reach optimum performance according to actual conditions, the master control arithmetic element adopts cheap chip just can realize, with low cost, satisfied the demand of digital control system low and middle-end application scenario.
Claims (6)
1. digital three-phase hybrid stepping motor drive unit, it is characterized in that: described drive unit comprises main power source module, accessory power supply module, current sample module, Intelligent Power Module IGCM15F60GA, master control arithmetic element tms320f28030, button display unit and memory; Wherein, described tms320f28030 output pwm signal, IGCM15F60GA receives the pwm signal of tms320f28030 output, and output three phase sine AC power drives three-phase hybrid stepping motor; The output of IGCM15F60GA arranges the current sample module.
2. digital three-phase hybrid stepping motor drive unit according to claim 1, it is characterized in that: described tms320f28030 connects the current sample module by ADC, by the SPI connected storage, connect the button display unit by the I/O mouth, and connect host computer reception signal by QEP.
3. digital three-phase hybrid stepping motor drive unit according to claim 1, it is characterized in that: described main power source module is comprised of uncontrollable single-phase rectification bridge and filter capacitor.
4. digital three-phase hybrid stepping motor drive unit according to claim 1, it is characterized in that: described accessory power supply module is inverse-excitation type switch power-supply, provide ± 15V ,+5V and P15V four tunnel DC power supply.
5. digital three-phase hybrid stepping motor drive unit according to claim 1, it is characterized in that: described current sample module comprises sampling resistor and the isolating difference amplifying circuit on the Intelligent Power Module output.
6. digital three-phase hybrid stepping motor drive unit according to claim 1, it is characterized in that: described button display unit is comprised of 4 seven segment digital tubes and 4 buttons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220440806.9U CN202713218U (en) | 2012-09-01 | 2012-09-01 | All-digital driving device of three-phase hybrid stepping motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220440806.9U CN202713218U (en) | 2012-09-01 | 2012-09-01 | All-digital driving device of three-phase hybrid stepping motor |
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| CN202713218U true CN202713218U (en) | 2013-01-30 |
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| CN201220440806.9U Expired - Lifetime CN202713218U (en) | 2012-09-01 | 2012-09-01 | All-digital driving device of three-phase hybrid stepping motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245037A (en) * | 2014-07-07 | 2016-01-13 | 翌能科技股份有限公司 | Coreless stepping motor and control method thereof |
| CN105790599A (en) * | 2016-05-20 | 2016-07-20 | 李建新 | Single-phase to three-phase 380V voltage converter |
-
2012
- 2012-09-01 CN CN201220440806.9U patent/CN202713218U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245037A (en) * | 2014-07-07 | 2016-01-13 | 翌能科技股份有限公司 | Coreless stepping motor and control method thereof |
| CN105245037B (en) * | 2014-07-07 | 2017-12-15 | 翌能科技股份有限公司 | Iron-core-free stepper motor and its control method |
| CN105790599A (en) * | 2016-05-20 | 2016-07-20 | 李建新 | Single-phase to three-phase 380V voltage converter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
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| CX01 | Expiry of patent term |