CN206686086U - A kind of optimal control circuit of simple direct current hydraulic system - Google Patents
A kind of optimal control circuit of simple direct current hydraulic system Download PDFInfo
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- CN206686086U CN206686086U CN201720341821.0U CN201720341821U CN206686086U CN 206686086 U CN206686086 U CN 206686086U CN 201720341821 U CN201720341821 U CN 201720341821U CN 206686086 U CN206686086 U CN 206686086U
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- circuit
- control circuit
- main control
- direct current
- hydraulic system
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Abstract
The utility model creates the optimal control circuit for providing a kind of simple direct current hydraulic system, including power circuit and control circuit, power circuit includes main control chip, the output end connection transformer of main control chip, the output end of transformer is connected to the input of fixed voltage voltage-stablizer, it is each chip power supply, 5V voltages connection dropping resistor and light emitting diode to obtain 5V voltages；Control circuit includes main control chip, the input of the output end connection PWM driving integrated chips of main control chip, and PWM drives integrated chip circuit connecting valve metal-oxide-semiconductor after filtering, switchs fly-wheel diode and hydraulic electric motor in parallel between metal-oxide-semiconductor and power supply.The utility model, which is created, only uses inexpensive device, the control circuit of simple direct current hydraulic system can be made to obtain very big optimization, the power circuit design of original creation can compatible 100V 400V direct-flow storage battery input, and realized by transformer strong and weak electrically separated, increase the security of operating personnel.
Description
Technical field
The invention belongs to field of power electronics, more particularly, to a kind of optimal control electricity of simple direct current hydraulic system
Road.
Background technology
Direct current hydraulic control system is to provide dynamic foundation with direct current generator, and mechanical energy is converted into pressure using hydraulic pump
Power, promote hydraulic oil.By controlling various valves to change the flow direction of hydraulic oil, so as to promote hydraulic cylinder to make different strokes, no
Equidirectional action, complete the different action needs of various equipment.In order to cost-effective, at present in many fields still using letter
The control system of easy direct current hydraulic system, as shown in figure, such Simple Control System, which is not equipped with DSP etc., has calculating work(
The high end chip of energy, and only control motor in hydraulic system using a hardware switch or the on-off circuit of metal-oxide-semiconductor composition.
For by hardware switch come for the hydraulic system that controls, strong and weak electricity does not separate, and any accident can make
The high-tension electricity of the direct contact number hectovolt of operating personnel, security substantially reduce；And the electricity of the switch for being made up of a metal-oxide-semiconductor
For road, such as figure one, due to rotating speed n=0, armature electromotive force Ea=0 when being started due to hydraulic press, and armature resistance Ra is very
Small, so starting current will reach very high values, output torque is consequently increased, when output torque, which reaches overflow valve, sets pressure,
Start to promote overflow valve to open, but because electrical time constant is far smaller than mechanical time constant, increase it in motor speed
Before, electric current rising is too fast, burns plank metal-oxide-semiconductor.With opening identical reason, motor can produce very big when shut-off
Freewheel current, makes the temperature of fly-wheel diode can quickly raise and fail, in summary the easy control circuit of direct current hydraulic press
With very high fault rate.
Existing direct current hydraulic system is individually mostly battery in outdoor application, common power source, battery
Voltage range is 100V-400V, circuit of the present direct current hydraulic control system except using the advanced computing chips such as DSP, just
It is very simple and crude hardware switch or single metal-oxide-semiconductor on-off circuit, it is seldom for the control circuit of simple direct current hydraulic system
Someone develops.Because the starting current and freewheel current of hydraulic electric motor are very big, either dsp chip control circuit or simple and crude
Hardware switch circuit and single metal-oxide-semiconductor on-off circuit, the control to hydraulic press all do not accomplish good compatibility, people often occur
The problems such as body security incident or device are burnt out.
Therefore, traditional direct current hydraulic system has as a drawback that
1st, it is higher using the control circuit cost of the high end chips such as DSP；
2nd, simple direct current hydraulic system control circuit security performance is very low；
3rd, because without reasonably solving the impact for starting, closing electric current, cause device fault rate high.
The content of the invention
In view of this, the invention is directed to a kind of optimal control circuit of Simple hydraulic system, existing to solve
The problem of cost present in technology is high, and security is poor, and control circuit fault rate is high.
To reach above-mentioned purpose, what the technical scheme of the invention was realized in：
A kind of optimal control circuit of simple direct current hydraulic system, including power circuit and control circuit, the power supply
Circuit is used to provide power supply for control circuit；
The power circuit includes main control chip, the output end connection transformer of the main control chip, is obtained by transformer
To 12V voltages, the output end of transformer is connected to the input of fixed voltage voltage-stablizer, and it is each chip power supply to obtain 5V voltages,
5V voltages connect dropping resistor and light emitting diode；
The control circuit includes main control chip, and the main control chip connects paster crystal oscillator, the output of the main control chip
The input of end connection PWM driving integrated chips, PWM drive integrated chip circuit connecting valve metal-oxide-semiconductor after filtering, switch
Fly-wheel diode and hydraulic electric motor in parallel between metal-oxide-semiconductor and power supply.
Further, the power circuit also includes piezo-resistance, the input of the power supply of the piezo-resistance series connection.
Further, the power circuit also includes direct insertion capacitor, and the direct insertion capacitor is connected in parallel on power supply
Between both positive and negative polarity.
Further, the main control chip in the power circuit uses model UC2845D8 mode PWM controlled
Device.
Further, the model TLV1117-50IKVUR of the fixed voltage voltage-stablizer.
Further, the main control chip of the control circuit also connects two-color diode by two metal-oxide-semiconductors.
Further, the main control chip in the control circuit uses model UC2845D8 single-chip microcomputer.
Relative to prior art, the optimal control circuit of Simple hydraulic system described in the invention a kind of has following
Advantage：
(1) the invention only uses inexpensive device, and the control circuit of simple direct current hydraulic system can be made to obtain very
Big optimization, the power circuit design of original creation can compatible 100V-400V direct-flow storage battery input, and realized by transformer
It is strong and weak electrically separated, increase the security of operating personnel；
(2) single-chip microcomputer in the circuit of the invention can realize the soft start of hydraulic electric motor by adjustable PWM, and setting is opened
Dutycycle when dynamic is 50 percent, then within the time of two seconds by the smooth lifting of PWM duty cycle to a hundred per cent simultaneously
Switch is remained to close；Using same principle when hydraulic press is closed, starting current and afterflow electricity are substantially reduced
Stream, makes the stability of circuit get a promotion；
(3) the invention single-chip microcomputer coordinates with dual-colored LED lamp display circuit shows the pressure state of hydraulic press
To operating personnel, increase the controlling of hydraulic press.
Brief description of the drawings
The accompanying drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound
The schematic description and description made is used to explain the invention, does not form the improper restriction to the invention.
In accompanying drawing：
Fig. 1 is the circuit diagram of the single metal-oxide-semiconductor control circuit of hydraulic system；
Fig. 2 is the direct current hydraulic system control circuit power circuit diagram described in the invention embodiment；
Fig. 3 is the direct current hydraulic system control circuit figure described in the invention embodiment.
Description of reference numerals：
T1- transformers, U1- fixed voltage voltage-stablizers, U2- current mode PWM controllers, M1-MOS pipes, U3- common anodes are double-colored
Diode, U4-PWM driving integrated chips, U5- single-chip microcomputers, the pin straight cutting interfaces of J1- tetra-, B1- hydraulic electric motors.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the invention can
To be mutually combined.
Describe the invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Fig. 2 the Optimal Control System power unit of this direct current hydraulic pressure is the electric current by model UC2845D8
Mode PWM controller U2 is as main control chip, and it is connected with transformer T1, then the 12V outputs by transformer and model
TLV1117-50IKVUR fixed voltage voltage-stablizer U1 connections.R5, R7 piezo-resistance are connected on the input of power supply, E1-E8's
Direct insertion capacitor is connected in parallel between the both positive and negative polarity of power supply；5V power supplys are followed by a dropping resistor R18 and light emitting diode D4.Add
Other auxiliary capacitor resistance in upper circuit so that the compatible larger range of input voltage of power circuit.
As shown in figure 3, the Optimal Control System control section of this direct current hydraulic pressure is the monolithic by model UC2845D8
Machine U5 is connected as main control chip, paster crystal oscillator D5 with XTAL2, XTAL1 pin, four pin straight cutting interface J1 and RXD and TXD pins
It is connected, output pin of the P1.2 pins as PWM Sofe Switch signals, is connected with PWM drivings integrated chip U4, with laggard filtering ripple
Circuit is connected on switch metal-oxide-semiconductor Q3, and sustained diode 6 and hydraulic electric motor are connected in parallel between power supply and switch metal-oxide-semiconductor.In addition
Control section is provided with two-color diode U3 display circuits, and P1.0 pin output status signals are connected to display letter on single-chip microcomputer
Number input, by being connected to two-color diode after two metal-oxide-semiconductors Q1, Q2, represent normal pressure when showing green, display is red
Loading pressure is represented during color.
In power unit：Current mode PWM controller U2 is in circuit using continuous (CCM) pattern of electric current.
When metal-oxide-semiconductor M1 is opened, supply voltage u1=E+ is added in the first winding of transformer, in secondary winding
The voltage of sensing isElectric current in first winding linearly increasing, byUnderstand, electric current i1Most
Big valueTransformer core is magnetized, and magnetic flux is linearly increasing,
When metal-oxide-semiconductor M1 is turned off, first winding open circuit, the work of two level winding, two level winding voltage u2=V0, two level winding
Electric current linear decline,Electric current i2Minimum valueTransformer core degaussing, magnetic flux
It is linear to reduce,
By ΔΦ1=ΔΦ2Understand,Wherein
Metal-oxide-semiconductor M1 voltage stress：
Diode D1 voltage stress：
Now, load current i2Equal to the average value of diode current, by the operation principle of transformer, N1i1min=
N2i2min；N1i1max=N2i2maxIt can obtain
Feedback voltage is same principle on the tertiary winding, the 12V DC voltage thus stablized, then passes through type
Number be TLV1117-50IKVUR fixed voltage voltage-stablizer U1, the 5V voltages stablized are each chip power supply.It is pressure-sensitive due to having
Resistance R5, R7 presence, can effectively alleviate the impact of turning-on voltage, the smooth startup of electricity in realization.It is luminous after 5V voltages
Diode can display circuit whether normal work.
In control section：By model UC2845D8 single-chip microcomputers U5 control, after pressing controller hydraulic starting switch,
Started using half pressure, then be progressively adjusted to total head work, output duty cycle is stepped up absolutely, using by 50 percent
When 2S complete soft whole process；Said process is repeated when off, reduces freewheel current.Paster crystal oscillator D5 provides for single-chip microcomputer
Accurate timing, two-color diode is connected to after two metal-oxide-semiconductors Q1, Q2, normal pressure is represented when showing green, when showing red
Represent loading pressure.
Circuit is automatically upper electric starting switch is pressed in the invention when working after, is started using half pressure, then be progressively adjusted to
Total head is worked, and the accurate control of hydraulic pressure can be achieved in the display of lamp in accordance with the instructions, and closing switch is only needed during shut-off, and system is realized flat automatically
Steady shut-off.
The preferred embodiment of the invention is the foregoing is only, is not intended to limit the invention creation, it is all at this
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc., the invention should be included in
Protection domain within.
Claims (7)
- A kind of 1. optimal control circuit of simple direct current hydraulic system, it is characterised in that：Including power circuit and control circuit, The power circuit is used to provide power supply for control circuit；The power circuit includes main control chip, the output end connection transformer of the main control chip, 12V is obtained by transformer Voltage, the output end of transformer are connected to the input of fixed voltage voltage-stablizer, and it is each chip power supply to obtain 5V voltages, 5V voltages Connect dropping resistor and light emitting diode；The control circuit includes main control chip, and the main control chip connects paster crystal oscillator, and the output end of the main control chip connects The input of PWM driving integrated chips is connect, PWM drives integrated chip circuit connecting valve metal-oxide-semiconductor after filtering, switchs metal-oxide-semiconductor Fly-wheel diode and hydraulic electric motor in parallel between power supply.
- A kind of 2. optimal control circuit of simple direct current hydraulic system according to claim 1, it is characterised in that：The electricity Source circuit also includes piezo-resistance, the input of the power supply of the piezo-resistance series connection.
- A kind of 3. optimal control circuit of simple direct current hydraulic system according to claim 1, it is characterised in that：The electricity Source circuit also includes direct insertion capacitor, and the direct insertion capacitor is connected in parallel between the both positive and negative polarity of power supply.
- 4. a kind of optimal control circuit of simple direct current hydraulic system according to claim any one of 1-3, its feature exist In：Main control chip in the power circuit uses model UC2845D8 current mode PWM controller.
- 5. a kind of optimal control circuit of simple direct current hydraulic system according to claim any one of 1-3, its feature exist In：The model TLV1117-50IKVUR of the fixed voltage voltage-stablizer.
- A kind of 6. optimal control circuit of simple direct current hydraulic system according to claim 1, it is characterised in that：The control The main control chip of circuit processed also connects two-color diode by two metal-oxide-semiconductors.
- A kind of 7. optimal control circuit of simple direct current hydraulic system according to claim 6, it is characterised in that：The control Main control chip in circuit processed uses model UC2845D8 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341821.0U CN206686086U (en) | 2017-04-01 | 2017-04-01 | A kind of optimal control circuit of simple direct current hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341821.0U CN206686086U (en) | 2017-04-01 | 2017-04-01 | A kind of optimal control circuit of simple direct current hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206686086U true CN206686086U (en) | 2017-11-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720341821.0U Withdrawn - After Issue CN206686086U (en) | 2017-04-01 | 2017-04-01 | A kind of optimal control circuit of simple direct current hydraulic system |
Country Status (1)
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| CN (1) | CN206686086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849680A (en) * | 2017-04-01 | 2017-06-13 | 天津中科华盈科技有限公司 | A kind of optimal control circuit of simple direct current hydraulic system |
| CN107888072A (en) * | 2017-12-14 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Appliances power source control device and control method |
-
2017
- 2017-04-01 CN CN201720341821.0U patent/CN206686086U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849680A (en) * | 2017-04-01 | 2017-06-13 | 天津中科华盈科技有限公司 | A kind of optimal control circuit of simple direct current hydraulic system |
| CN106849680B (en) * | 2017-04-01 | 2023-07-14 | 天津中科华盈科技有限公司 | An optimized control circuit for a simple DC hydraulic system |
| CN107888072A (en) * | 2017-12-14 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Appliances power source control device and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210820 Address after: 255000 No. 6, zhangliu Road, Fangzhen Town, Zhangdian District, Zibo City, Shandong Province Patentee after: Shandong Huamei Power Technology Co.,Ltd. Address before: Block F, no.6, Huafeng Road, Huaming hi tech Industrial Zone, Dongli District, Tianjin Patentee before: TIANJIN ZHONGKE HUAYING TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171128 Effective date of abandoning: 20230714 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20171128 Effective date of abandoning: 20230714 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |