CN205592225U - Portable hydraulic servo valve failure diagnosis tester - Google Patents
Portable hydraulic servo valve failure diagnosis tester Download PDFInfo
- Publication number
- CN205592225U CN205592225U CN201620325373.0U CN201620325373U CN205592225U CN 205592225 U CN205592225 U CN 205592225U CN 201620325373 U CN201620325373 U CN 201620325373U CN 205592225 U CN205592225 U CN 205592225U
- Authority
- CN
- China
- Prior art keywords
- servo valve
- cpu
- width modulation
- pressure
- hydraulic servo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Servomotors (AREA)
Abstract
The utility model relates to a portable hydraulic servo valve failure diagnosis tester, including the shell, externally test the interface, pressure signal gathers interface, demonstration and the control unit and circuit board, but install rechargeable lithium -ion battery, power conversion module, a central processing unit, pulse width modulated amplifier unit and pressure signal acquisition unit on the circuit board, the pulse width modulated amplifier unit export pulsewidth modulation PWM signal amplification to 0 with a central processing unit 100ma drives servoing motor. The utility model discloses exportable 5KHz's 0 the switching -over of servovalve is realized to 100ma pulsewidth modulation (PWM) signal, but two coils of direct drive servovalve CD -ROM drive motor, gather the pressure in hydraulic servo valve output A, B chamber simultaneously through pressure sensor to show surveyability with instrument or curved form on the screen.
Description
Technical field
This utility model belongs to hydraulic efficiency servo-valve field, relates to the fault diagnosis of servo valve, especially a kind of portable hydraulic servo valve Fault Diagnosis Testing Instrument.
Background technology
At modern industry, metallurgy and machine industry, the application of Hydrauservo System is widely, especially at the production line of modernization, hydraulic servo control system is tightly combined with mechanical action and electric control system, the equipment comprising hydraulic servocontrol once breaks down, it is mechanical breakdown, hydraulic control system fault or electric control system fault that maintainer is difficult to judgement, moreover in the market hydraulic efficiency servo-valve brand differ, model numerous, and servo valve drive motor electric current also differ；For this difficult point, this utility model uses advanced design concept, in conjunction with the experience of a large amount of field failure judge processs, can to need on market to use external amplification board hydraulic efficiency servo-valve carry out breakdown judge and performance test.
Utility model content
In place of the purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of hydraulic efficiency servo-valve Fault Diagnosis Testing Instrument simple to operate, easy to carry.
This utility model solves technical problem and be the technical scheme is that
nullA kind of portable hydraulic servo valve Fault Diagnosis Testing Instrument，Including shell、Externally test interface、Pressure signal acquisition interface、Display and control unit and circuit board，Chargeable lithium cell is installed on circuit boards、Power transfer module、CPU、Pulse width modulation amplifier unit and pressure signal collecting unit，CPU respectively with pulse width modulation amplifier unit、Pressure signal collecting unit I/O connects，Pulse width modulation amplifier unit is connected with external test interface I/O，Pressure signal collecting unit is connected with pressure signal acquisition interface I/O，CPU output connects display and control unit，Chargeable lithium cell is connected with CPU by power transfer module，Chargeable lithium cell is also respectively connected with external test interface and pressure signal acquisition interface，CPU output pulse width modulation (PWM) signal is amplified to 0-± 100ma and drives servo valve motor by described pulse width modulation amplifier unit.
And, described pulse width modulation amplifier unit includes scaling chip U5, the pulse-width modulation PWM signal that CPU produces is connected to scaling chip U5 by R13, four groups of amplifiers are had inside scaling chip U5, it is respectively U4:A, U4:B, U4:C, U4:D, wherein U4:C is as phase inverter, the pulse-width modulation PWM signals reverse that CPU is produced, U4:B is as summing amplifier, the pulse-width modulation PWM signal of output ± 10v, U4:D, U4:A and power amplifier tube Q9, Q10 and sample resistance R19 forms constant-current control circuit, maximum current is limited in ± 100ma, drive servo valve motor coil；When CPU sends the pulse-width modulation PWM signal of dutycycle 50%, moment in opposite direction equal in magnitude is produced on the coil 1 and 2 of servo valve motor, servo valve is stable not to commutate in middle position, when CPU sends the pulse-width modulation PWM signal of dutycycle 50%-99%, the pulsewidth of the coil 1 of servo valve motor increases coil 2 pulsewidth simultaneously and reduces, servo valve motor produces moment, makes servo valve P-A commutate；When CPU sends the pulse-width modulation PWM signal of dutycycle 50%-1%, servo valve P-B commutates.
And, described external test interface uses 6 core aviation plugs.
And, described pressure signal acquisition interface uses 4 core aviation plugs.
And, described chargeable lithium cell uses 24v3000ma/h chargeable lithium battery group, band charging and current foldback circuit, is equipped with the constant current charger of pressure limiting 25.2v simultaneously.
And, 24v Power convert is become the reference voltage controlling voltage and+2v needed for tester inside by described power transfer module.
And, described display uses serial ports touch screen with control unit, by serial ports and CPU communication, the various information of CPU is shown in time simultaneously, is the man machine interface of pure Chinese.
Advantage of the present utility model and good effect be:
1,0-± 100ma pulsewidth modulation (PWM) signal of the exportable 5KHz of this utility model, can direct drive servovalve drive motor two coils, it is achieved the commutation of servo valve；Gathered the pressure in hydraulic efficiency servo-valve output A, B chamber simultaneously by pressure transducer, and show with the form of instrument or curve on screen, very clear.
2, this utility model is self-powered, uses the most easy to carry, the touch screen technology that employing is advanced, and full Chinese display and built-in description are simple to operate, easy-to-understand, easy to learn.
3, this utility model can quickly judge the hydraulic servo fault of online production and off-line maintenance, and hydraulic efficiency servo-valve is carried out performance test.
4, the method that this utility model gathers servo valve output oil port pressure by pressure signal collecting unit, display is on screen in time, it is simple to user failure judgement, understands the characteristic of servo valve in time.
5, this utility model shell employing aluminium alloy extrusions, good heat dissipation, anti-interference；24v chargeable lithium cell group, CPU, pressure signal collecting unit and touch screen communication are arranged on same circuit board, it is simple to debugging and upgrading in the future；Touch screen is arranged on front, handling, visual good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is circuit block diagram of the present utility model；
Fig. 3 is the circuit diagram of pulse width modulation amplifier unit；
Fig. 4 is the use connection figure of this tester.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings and by specific embodiment, and following example are illustrative, are not determinate, it is impossible to limit protection domain of the present utility model with this.
A kind of portable hydraulic servo valve Fault Diagnosis Testing Instrument, including shell 7, external test interface 3, pressure signal acquisition interface 5, display and control unit 4 and circuit board 1,24v chargeable lithium cell 8, power transfer module 9, CPU (CPU) 10, pulse width modulation amplifier unit 2, pressure signal collecting unit 6 are wherein installed on circuit board；See accompanying drawing 1.
CPU is connected with pulse width modulation amplifier unit, pressure signal collecting unit I/O respectively, and pulse width modulation amplifier unit is connected with external test interface I/O, and pressure signal collecting unit is connected with pressure signal acquisition interface I/O.CPU output connects display and control unit.Chargeable lithium cell group is connected with CPU by power transfer module, powers for CPU.Meanwhile, chargeable lithium cell is also respectively connected with external test interface and pressure signal acquisition interface, is hydraulic valve to be measured by interface and pressure transducer is powered.As shown in Figure 2.
CPU (CPU) uses domestic STC single-chip microcomputer, serial ports 1 is for download program and program upgrading, serial ports 2 is used for and touch screen communication, PCA port is used for output pulse width and modulates (PWM) signal, and analog input unit is used for the 0-10v signal of processing pressure sensor acquisition.
Output pulse width modulation (PWM) signal that CPU is sent by pulse width modulation amplifier unit is amplified to 0-± 100ma and drives servo valve motor；Pulsewidth modulation (PWM) signal that CPU U1 produces, it is connected to scaling chip U5 by R13, by four groups of amplifiers inside scaling chip U5, wherein U4:C is as phase inverter, pulsewidth modulation (PWM) signals reverse that CPU U1 is produced, U4:B is as summing amplifier, pulsewidth modulation (PWM) signal of output ± 10v, U4:D, U4:A form constant-current control circuit with power amplifier tube Q9, Q10 and sample resistance R19, maximum current is limited in ± 100ma, drives servo valve motor coil；When CPU U1 sends pulsewidth modulation (PWM) signal of dutycycle 50%, moment in opposite direction equal in magnitude is produced on the coil 1 and 2 of servo valve motor, servo valve is stable not to commutate in middle position, when CPU U1 sends pulsewidth modulation (PWM) signal of dutycycle 50%-99%, the pulsewidth of the coil 1 of servo valve motor increases coil 2 pulsewidth simultaneously and reduces, servo valve motor produces moment, makes servo valve P-A commutate；In like manner, when CPU U1 sends pulsewidth modulation (PWM) signal of dutycycle 50%-1%, servo valve P-B commutates；Owing to have employed current constant control, even if this instrument also will not be had any impact by output short-circuit.As shown in Figure 3.
Described external test interface uses 6 core aviation plugs, described pressure signal acquisition interface to use 4 core aviation plugs.
Chargeable lithium cell uses 24v3000ma/h chargeable lithium battery group; band charging and current foldback circuit, be equipped with the constant current charger of pressure limiting 25.2v, it is ensured that the safety of user simultaneously; set of cells first provides electric energy for external sensor, and second provides electric energy for tester inside.
24v Power convert is become the reference voltage controlling voltage and+2v needed for tester inside by power transfer module.
Display uses serial ports touch screen with control unit, by serial ports and CPU communication, the various information of CPU is shown in time simultaneously, is the man machine interface of pure Chinese.
Pressure transducer is connected to pressure signal collecting unit by 4 core aviation plugs, the 0-10v pressure signal that CPU will collect, and shows on the touchscreen with the form of Pressure gauge or curve, it is simple to user carries out fault verification and performance test.
Shell uses aluminium alloy extrusions, oil resistant, elimination electromagnetic interference, is suitable for the environment such as industry, metallurgy and manufacturing.External tapping all uses waterproof aviation plug, is used for connecting hydraulic control valve to be tested and pressure transducer, meets the breakdown judge under adverse circumstances and testing requirement.
Using method of the present utility model is:
The 6 core aviation plugs 11 of this tester 19 are connected to hydraulic efficiency servo-valve 13 to be detected by cable 12；By 4 core aviation plugs 18 and the pressure transducer 16 being attached thereto, it is connected to the output B chamber of hydraulic valve to be detected by quick pressure measurement line 15；By 4 core aviation plugs and the pressure transducer 17 being attached thereto, it is connected to the output A chamber of hydraulic valve to be detected by quick pressure measurement line 14；Turn on the power switch, select corresponding parameter to test according to explanation.This utility model has manual test and two kinds of selections of test automatically, and user can be carried out according to practical situation；User only needs the pressure simple analysis to Setting signal, spool displacement feedback signal and A, B chamber, can judge mechanical breakdown or hydraulic pressure, electrical control fault；As shown in Figure 4.
Above-described is only preferred implementation of the present utility model; it should be pointed out that, for the person of ordinary skill of the art, on the premise of conceiving without departing from utility model; can also make some deformation and improvement, these broadly fall into protection domain of the present utility model.
Claims (7)
1. a portable hydraulic servo valve Fault Diagnosis Testing Instrument, it is characterised in that: include shell, external test interface, pressure
Force signal acquisition interface, display with control unit and circuit board, install on circuit boards chargeable lithium cell, power transfer module,
CPU, pulse width modulation amplifier unit and pressure signal collecting unit, CPU is put with pulsewidth modulation respectively
Big device unit, pressure signal collecting unit I/O connect, and pulse width modulation amplifier unit is connected with external test interface I/O, pressure
Force signal collecting unit is connected with pressure signal acquisition interface I/O, and CPU output connects display and control unit, can
Charged lithium cells is connected with CPU by power transfer module, and chargeable lithium cell is also respectively connected with external test interface
And pressure signal acquisition interface, described pulse width modulation amplifier unit is by CPU output pulse width modulation (PWM) signal
It is amplified to 0-± 100ma and drives servo valve motor.
Portable hydraulic servo valve Fault Diagnosis Testing Instrument the most according to claim 1, it is characterised in that: described pulsewidth
Modulated amplifier unit includes scaling chip U5, and the pulse-width modulation PWM signal that CPU produces is by R13 even
Receive scaling chip U5, inside scaling chip U5, have four groups of amplifiers, respectively U4:A, U4:B, U4:C,
U4:D, wherein U4:C is as phase inverter, pulse-width modulation PWM signals reverse CPU produced, U4:B conduct
Summing amplifier, the pulse-width modulation PWM signal of output ± 10v, U4:D, U4:A and power amplifier tube Q9, Q10 and sampling
Resistance R19 forms constant-current control circuit, and maximum current is limited in ± 100ma, drives servo valve motor coil；When central authorities process single
When unit sends the pulse-width modulation PWM signal of dutycycle 50%, the coil 1 and 2 of servo valve motor produces direction equal in magnitude
Contrary moment, servo valve is stable not to commutate in middle position, when CPU sends the pulsewidth modulation of dutycycle 50%-99%
During pwm signal, the pulsewidth of the coil 1 of servo valve motor increases coil 2 pulsewidth simultaneously and reduces, and servo valve motor produces moment,
Servo valve P-A is made to commutate；When CPU sends the pulse-width modulation PWM signal of dutycycle 50%-1%, servo valve
P-B commutates.
Portable hydraulic servo valve Fault Diagnosis Testing Instrument the most according to claim 1, it is characterised in that: described is external
Test interface uses 6 core aviation plugs.
Portable hydraulic servo valve Fault Diagnosis Testing Instrument the most according to claim 1, it is characterised in that: described pressure
Signals collecting interface uses 4 core aviation plugs.
Portable hydraulic servo valve Fault Diagnosis Testing Instrument the most according to claim 1, it is characterised in that: described fills
Electricity lithium battery uses 24v3000ma/h chargeable lithium battery group, band charging and current foldback circuit, is equipped with pressure limiting 25.2v's simultaneously
Constant current charger.
Portable hydraulic servo valve Fault Diagnosis Testing Instrument the most according to claim 1, it is characterised in that: described power supply
24v Power convert is become the reference voltage controlling voltage and+2v needed for tester inside by modular converter.
Portable hydraulic servo valve Fault Diagnosis Testing Instrument the most according to claim 1, it is characterised in that: described display
Serial ports touch screen is used, by serial ports and CPU communication, simultaneously by the various letters of CPU with control unit
Breath shows in time, is the man machine interface of pure Chinese.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620325373.0U CN205592225U (en) | 2016-04-18 | 2016-04-18 | Portable hydraulic servo valve failure diagnosis tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620325373.0U CN205592225U (en) | 2016-04-18 | 2016-04-18 | Portable hydraulic servo valve failure diagnosis tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205592225U true CN205592225U (en) | 2016-09-21 |
Family
ID=56934505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620325373.0U Expired - Fee Related CN205592225U (en) | 2016-04-18 | 2016-04-18 | Portable hydraulic servo valve failure diagnosis tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205592225U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594000A (en) * | 2016-12-15 | 2017-04-26 | 中国航空工业集团公司北京长城航空测控技术研究所 | Electro-hydraulic servo valve fault diagnosis method |
| CN107153004A (en) * | 2017-06-20 | 2017-09-12 | 江苏科技大学 | A kind of handhold portable servo valve tester and method of testing |
| CN109387717A (en) * | 2018-11-19 | 2019-02-26 | 江苏科技大学 | A kind of handhold portable servo valve tester and test method |
| CN109799764A (en) * | 2019-02-01 | 2019-05-24 | 零沃(上海)工业控制有限公司 | A kind of hydraulic servo executes system testing analytical equipment and method |
| CN111550473A (en) * | 2019-02-12 | 2020-08-18 | 纳博特斯克有限公司 | Method and system for diagnosing state of hydraulic servo valve and state diagnosing device thereof |
-
2016
- 2016-04-18 CN CN201620325373.0U patent/CN205592225U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594000A (en) * | 2016-12-15 | 2017-04-26 | 中国航空工业集团公司北京长城航空测控技术研究所 | Electro-hydraulic servo valve fault diagnosis method |
| CN107153004A (en) * | 2017-06-20 | 2017-09-12 | 江苏科技大学 | A kind of handhold portable servo valve tester and method of testing |
| CN107153004B (en) * | 2017-06-20 | 2019-10-29 | 江苏科技大学 | A kind of handhold portable servo valve tester and test method |
| CN109387717A (en) * | 2018-11-19 | 2019-02-26 | 江苏科技大学 | A kind of handhold portable servo valve tester and test method |
| CN109799764A (en) * | 2019-02-01 | 2019-05-24 | 零沃(上海)工业控制有限公司 | A kind of hydraulic servo executes system testing analytical equipment and method |
| CN111550473A (en) * | 2019-02-12 | 2020-08-18 | 纳博特斯克有限公司 | Method and system for diagnosing state of hydraulic servo valve and state diagnosing device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205592225U (en) | Portable hydraulic servo valve failure diagnosis tester | |
| CN103823460B (en) | A kind of test equipment of AuCT controlling machine box and method of testing | |
| CN202404169U (en) | Low voltage testing device of serial voltage-superimposed high voltage converter | |
| CN103248293A (en) | TMS320F2812 based speed regulation controller of brushless DC motor | |
| CN212083990U (en) | Motor controller offline detection system | |
| CN108919002A (en) | A kind of test macro of direct-current charging post | |
| CN103969546A (en) | Intelligent tester for secondary polarities of four-star voltage transformers | |
| CN203838264U (en) | Subway vehicle battery charger test bench | |
| CN204064663U (en) | A kind of engine generator loading pilot system | |
| CN205592228U (en) | Portable multi -functional hydraulic control valve failure diagnosis test instrument of intelligence | |
| CN201707433U (en) | Intelligent controller characteristic test instrument | |
| CN208384025U (en) | A kind of test macro of direct-current charging post | |
| CN204989368U (en) | Leakage current monitor | |
| CN203466626U (en) | Intelligent monitoring device for temporary power supply box of substation construction engineering | |
| CN206480263U (en) | A kind of low-voltage collecting meter reading failure training set | |
| CN201853133U (en) | Testing device for motor controller | |
| CN107327443A (en) | Hydraulic servo valve tester | |
| CN205592226U (en) | Hydraulic pressure proportion switching -over valve failure diagnosis tester | |
| CN105927612B (en) | Intelligent portable multifunctional hydraulic control valve Fault Diagnosis Testing Instrument device | |
| CN201828651U (en) | Digital full function state monitoring and safety evaluation device of transformer substation direct current system | |
| CN107860968A (en) | Power consumption self-diagnostic circuit, power consumption self-diagnosing method and its measuring instrument | |
| CN207264189U (en) | A kind of automotive motor controller emulation test system | |
| CN203812087U (en) | Wind and photovoltaic hybrid power generation system testing device | |
| CN205593735U (en) | Portable hydraulic pressure proportional pressure valve failure diagnosis tester | |
| CN203660953U (en) | Submersible ground control apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 300180, No. 174 Jintang Road, Hedong District, Tianjin Patentee after: TIANJIN AOLANTE HYDRAULIC EQUIPMENT CO.,LTD. Address before: 300180, No. 7, telex Road, No. two bridge, Hedong District, Tianjin (room 358, block A, hospital) Patentee before: TIANJIN AOLANTE HYDRAULIC EQUIPMENT MAINTENANCE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |