CN105973592A - Gearbox test system - Google Patents
Gearbox test system Download PDFInfo
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- CN105973592A CN105973592A CN201610590316.XA CN201610590316A CN105973592A CN 105973592 A CN105973592 A CN 105973592A CN 201610590316 A CN201610590316 A CN 201610590316A CN 105973592 A CN105973592 A CN 105973592A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
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- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a gearbox test system. The system is characterized in that the system is mainly formed by a gearbox to be tested, a variable frequency driving motor, a torque sensor, a noise detection unit, a vibrating sensor, a driving motor frequency converter, a variable frequency loading motor, a loading motor frequency converter and a central processor, wherein the variable frequency driving motor, the torque sensor, the noise detection unit and the vibrating sensor are connected with the gearbox to be tested; the driving motor frequency converter is connected with the variable frequency driving motor; the variable frequency loading motor is connected with the torque sensor; the loading motor frequency converter is connected with the variable frequency loading motor; and the central processor is connected with the driving motor frequency converter, the vibrating sensor, the torque sensor, the noise detection unit and the loading motor frequency converter. The noise detection unit can collect noise signals emitted by the gearbox to be tested during working, and filter interference signals mingled in the noise signals, such as the noise signals emitted by the frequency converter and environmental noise signals, so that the system can better identify the noise signals emitted by the gearbox, and realizes accurate analysis on the signals to enable testing personnel to be able to judge the performance of the gearbox better.
Description
Technical field
The present invention relates to a kind of test system, specifically refer to a kind of change speed gear box test system.
Background technology
Change speed gear box mainly comprises parts as automobile, once it is light to break down, affects the power performance of automobile,
Heavy then possibly cannot travel, it could even be possible to there is traffic accident, life threatening safety.In order to ensure speed change
The quality of case, all can use test system that it exports the property such as moment of torsion, noise and vibration before change speed gear box dispatches from the factory
Can parameter test.Wherein, the noise testing of change speed gear box can reflect change speed gear box manufacture and design precision and
Fault type.But, existing change speed gear box test system be easily subject to when noise is detected environment because of
The interference of element so that it is cannot be analyzed noise accurately, causes tester cannot judge accurately to become
The performance of speed case.
Summary of the invention
It is an object of the invention to overcome existing change speed gear box test system to be easily subject to environmental factors interference cannot
The defect accurately noise being analyzed, it is provided that a kind of change speed gear box test system.
The purpose of the present invention is achieved through the following technical solutions: a kind of change speed gear box test system, mainly by tested
Change speed gear box, the variable frequency drive motors being connected with tested change speed gear box respectively, torque sensor, noise measuring list
Unit and vibrating sensor, the driving motor inverter being connected with variable frequency drive motors, with torque sensor phase
The frequency conversion loading motor connected, the loading motor converter being connected with frequency conversion loading motor, and simultaneously with
Drive motor inverter, vibrating sensor, torque sensor, noise detection unit and loading motor converter
The central processing unit composition being connected；Described noise detection unit by processing chip U, positive pole with process chip U
GND pin be connected, the electric capacity C1 of minus earth, be serially connected in process chip U FREQ pin and
Resistance R7, P pole between the negative pole of electric capacity C1 is connected with the COMP pin processing chip U, N pole
The diode D1 being connected with the negative pole of electric capacity C1, the spy being connected with the SDSN pin processing chip U
Levying extraction circuit, N pole connects what power supply, P pole were connected with the CS pin processing chip U after resistance R10
Zener diode D2, is serially connected between the N pole of Zener diode D2 and the IN pin processing chip U
Resistance R9, is serially connected in the resistance between the N pole of Zener diode D2 and the PIN pin processing chip U
R8, N pole is connected with the P pole of Zener diode D2, P pole is connected with the FB pin processing chip U
Zener diode D3, and the gain compensation circuit that is connected of GATE pin processing chip U, one end with
The PGND pin of process chip U is connected, the resistance R11 of other end ground connection, with gain compensation circuit phase
The low-pass filter circuit connected, and the sound transducer Q composition being connected with characteristic extracting circuit；Described
The N pole of Zener diode D2 is connected with the SDSN pin processing chip U and low-pass filter circuit also simultaneously
Connect；Described sound transducer Q is connected with tested change speed gear box；The outfan of described low-pass filter circuit with in
Central processor is connected.
Further, described characteristic extracting circuit by audion VT1, audion VT2, audion VT3,
Amplifier P1, the resistance R1 being serially connected between the colelctor electrode of audion VT1 and the colelctor electrode of audion VT3,
The resistance R2 being serially connected between the emitter stage of audion VT2 and the emitter stage of audion VT3, is serially connected in three
Resistance R3 between colelctor electrode and the colelctor electrode of audion VT3 of pole pipe VT2, is serially connected in amplifier P1's
Resistance R6 between negative pole and outfan, and one end is connected with the outfan of amplifier P1, the other end
The resistance R5 composition of ground connection after resistance R4；The outfan of described amplifier P1 and the SDSN processing chip U
Pin is connected, positive pole is connected with the junction point of resistance R4 and resistance R5, its negative pole and audion VT3
Colelctor electrode be connected；The base stage of described audion VT1 is connected with sound transducer Q, its emitter stage connects
Ground, its colelctor electrode are connected with its base stage；The base stage of described audion VT2 and the colelctor electrode of audion VT1
Be connected, its colelctor electrode is connected with the base stage of audion VT3；The emitter stage and three of described audion VT3
The emitter stage of pole pipe VT1 is connected.
Described gain compensation circuit is by amplifier P2, field effect transistor MOS1, audion VT4, P pole and field
The diode D4, N that the source electrode of effect pipe MOS1 is connected, N pole is connected with the positive pole of amplifier P2
The diode that pole is connected with the outfan of amplifier P2, P pole is connected with the colelctor electrode of audion VT4
D5, negative pole is connected with the emitter stage of audion VT4, the electric capacity C2 of plus earth, and one end is with electric
Hold the resistance R12 that positive pole is connected, the other end the is connected composition of C2 with the negative pole of amplifier P2；Described
The base stage of audion VT4 is connected with low-pass filter circuit；The positive pole of described amplifier P2 respectively with process core
The GATE pin of sheet U is connected with low-pass filter circuit, its outfan is then connected with low-pass filter circuit；
The drain electrode of described field effect transistor MOS1 is connected with the outfan of amplifier P2, its grid then with low-pass filtering
Circuit is connected.
Described low-pass filter circuit is by amplifier P3, amplifier P4, field effect transistor MOS2, field effect transistor
MOS3, the electricity that positive pole is connected with the base stage of audion VT4, negative pole is connected with the negative pole of amplifier P3
Hold C3, resistance R15, the N pole warp being serially connected between the outfan of amplifier P3 and the negative pole of amplifier P4
After resistance R13, the outfan with amplifier P2 is connected, P pole is connected with the N pole of Zener diode D2
Diode D6, N pole be connected with the P pole of diode D6, P pole after resistance R14 with field effect transistor
The diode D7 that the source electrode of MOS2 is connected, positive pole is connected with the P pole of diode D7, negative pole and field
The electric capacity C4 that the grid of effect pipe MOS2 is connected, positive pole is connected with the positive pole of amplifier P4, negative pole
The electric capacity C5 being connected with the outfan of amplifier P4, and one end is connected, separately with the negative pole of electric capacity C5
The resistance R16 composition that one end is connected with the drain electrode of field effect transistor MOS3；The N pole of described diode D6
It is connected with the grid of field effect transistor MOS1；The source electrode of described field effect transistor MOS2 is defeated with amplifier P2's
Go out that end is connected, its drain electrode is connected with the negative pole of amplifier P4, grid then with the grid of field effect transistor MOS3
Pole is connected；The described positive pole of amplifier P3 is connected with the source electrode of field effect transistor MOS2；Described field effect
The drain electrode of pipe MOS3 is connected with the positive pole of amplifier P2；The outfan of described amplifier P4 is low as this
The outfan of bandpass filter circuit is also connected with central processing unit.
Described process chip U is the integrated chip of ADP1621.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) noise detection unit of the present invention can gather the noise letter that tested change speed gear box is operationally sent
Number, and the interference signal being entrained in noise signal, such as converter are sent noise signal, environment noise
Signals etc. filter, and make the present invention can preferably identify the noise signal that change speed gear box is sent, and right
Signal is analyzed accurately, so that change speed gear box performance can preferably be judged by tester.
(2) noise detection unit of the present invention uses the integrated chip of ADP1621 and novel peripheral circuit phase
In conjunction with, greatly improve the speed of signal processing, so that the testing efficiency of the present invention is higher.
Accompanying drawing explanation
Fig. 1 is the overall structure block diagram of the present invention.
Fig. 2 is the structure chart of the noise detection unit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by tested change speed gear box, the frequency conversion being connected with tested change speed gear box respectively
Drive motor, torque sensor, noise detection unit and vibrating sensor, be connected with variable frequency drive motors
Driving motor inverter, the frequency conversion loading motor being connected with torque sensor, with frequency conversion loading motor phase
The loading motor converter connected, and simultaneously with drive motor inverter, vibrating sensor, torque sensing
The central processing unit composition that device, noise detection unit are connected with loading motor converter.
This variable frequency drive motors is used for driving tested change speed gear box to work.Motor inverter is driven then to be used for controlling to become
Frequency drives motor.Frequency conversion loading motor, for providing load to tested change speed gear box, is simulated by changing load
Tested change speed gear box works under various operating modes.This loading motor converter is then for carrying out frequency conversion loading motor
Control.Vibration signal when vibrating sensor is for gathering the work of tested change speed gear box, and it is transferred to central authorities' process
Device, the A308 type wireless vibration sensor that its preferred Beijing Bi Chuan Science and Technology Co., Ltd. produces, it uses
Wireless digital signal transmission means eliminates the noise jamming that long cable transmission is brought, and whole measurement system has
High certainty of measurement and capacity of resisting disturbance.Torque sensor by shaft joint respectively with tested change speed gear box and change
Frequently loading motor is connected, the torque signal of output during for gathering the work of tested change speed gear box, and is transferred to
Central processor, it preferentially uses the JN338-AF type flange that Beijing Sanjing Chuangye Technology Group Co.ltd produces
Formula torque rotary speed sensor, this model torque sensor takes up room little when installing, torque measurement precision is high,
Rotating speed is applied widely, can dynamically, the torque of static measurement connecting portion rotary shaft, rotating speed, shaft power.
Noise signal when noise detection unit is for detecting the work of tested change speed gear box, and feed back to central authorities' process
Device.This central processing unit is as the control centre of the present invention, and it uses AT89S52 single-chip microcomputer to realize, should
The P0.1 pin of AT89S52 single-chip microcomputer with drive motor inverter be connected, P3.2 pin then with vibrating sensing
Device is connected, and its P3.3 pin is then connected with noise detection unit, and P3.4 pin is connected with torque sensor
Connecing, P0.2 pin is then connected with loading motor converter.This central processing unit can be to driving motor frequency conversion
Device and loading motor converter send command signal, it is also possible to receive various test parameter.
In order to preferably implement the present invention, the present invention can also arrange keyboard and display, this keyboard with
The P3.5 pin of AT89S52 single-chip microcomputer is connected, and tester can pass through input through keyboard control instruction.Aobvious
Show device for showing the parameter of tested electromotor, it is connected with the P0.3 pin of AT89S52 single-chip microcomputer.
Noise in order to preferably be sent tested change speed gear box detects, as in figure 2 it is shown, the inspection of this noise
Survey unit is by processing chip U, and positive pole is connected with the GND pin processing chip U, the electric capacity of minus earth
C1, be serially connected in process chip U FREQ pin and the negative pole of electric capacity C1 between resistance R7, P pole with
Process the diode D1 that COMP pin is connected, N pole is connected of chip U with the negative pole of electric capacity C1,
The characteristic extracting circuit being connected with the SDSN pin processing chip U, N pole connects power supply, P pole through resistance
The Zener diode D2 being connected with the CS pin processing chip U after R10, is serially connected in Zener diode D2
N pole and process chip U IN pin between resistance R9, be serially connected in the N pole of Zener diode D2
And resistance R8, the N pole processed between the PIN pin of chip U is connected with the P pole of Zener diode D2,
The Zener diode D3 that P pole is connected with the FB pin processing chip U, with the GATE processing chip U
The gain compensation circuit that pin is connected, one end is connected with the PGND pin processing chip U, the other end
The resistance R11 of ground connection, the low-pass filter circuit being connected with gain compensation circuit, and and characteristic extracting circuit
The sound transducer Q composition being connected.
The N pole of described Zener diode D2 also simultaneously with SDSN pin and the low-pass filtering processing chip U
Circuit is connected.Described sound transducer Q is connected with tested change speed gear box.Described low-pass filter circuit defeated
Go out end to be connected with central processing unit.In order to preferably implement the present invention, described process chip U is preferred
The integrated chip of ADP1621；This sound transducer Q preferred Jiaxing City butterfly totem Electronics Equipment Co., Ltd produces
CRY2120/U type sound transducer realize.
Wherein, described characteristic extracting circuit, by audion VT1, audion VT2, audion VT3, amplifies
Device P1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 and resistance R6 form.
During connection, resistance R1 is serially connected between the colelctor electrode of audion VT1 and the colelctor electrode of audion VT3.
Resistance R2 is serially connected between the emitter stage of audion VT2 and the emitter stage of audion VT3.Resistance R3 goes here and there
It is connected between the colelctor electrode of audion VT2 and the colelctor electrode of audion VT3.Resistance R6 is serially connected in amplifier
Between negative pole and the outfan of P1.One end of resistance R5 is connected with the outfan of amplifier P1, the other end
Ground connection after resistance R4.
The outfan of this amplifier P1 is connected with the SDSN pin processing chip U, positive pole and resistance R4
Be connected with the junction point of resistance R5, its negative pole is connected with the colelctor electrode of audion VT3.Described three poles
The base stage of pipe VT1 is connected with sound transducer Q, its grounded emitter, its colelctor electrode are connected with its base stage
Connect.The base stage of described audion VT2 is connected with the colelctor electrode of audion VT1, its colelctor electrode and audion
The base stage of VT3 is connected.The emitter stage of described audion VT3 is connected with the emitter stage of audion VT1.
Described gain compensation circuit by amplifier P2, field effect transistor MOS1, audion VT4, resistance R12,
Electric capacity C2, diode D5 and diode D4.
During connection, the P pole of diode D4 is connected with the source electrode of field effect transistor MOS1, N pole and amplification
The positive pole of device P2 is connected.The N pole of diode D5 is connected with the outfan of amplifier P2, P pole and three
The colelctor electrode of pole pipe VT4 is connected.The negative pole of electric capacity C2 is connected with the emitter stage of audion VT4, just
Pole ground connection.One end of resistance R12 is connected with the positive pole of electric capacity C2, the other end and the negative pole of amplifier P2
It is connected.
The base stage of described audion VT4 is connected with low-pass filter circuit.The positive pole of described amplifier P2 is respectively
With process chip U GATE pin and low-pass filter circuit is connected, its outfan then with low-pass filtering electricity
Road is connected.The drain electrode of described field effect transistor MOS1 is connected with the outfan of amplifier P2, its grid then
It is connected with low-pass filter circuit.
It addition, described low-pass filter circuit is imitated by amplifier P3, amplifier P4, field effect transistor MOS2, field
Should pipe MOS3, described resistance R13, resistance R14, resistance R15, resistance R16, diode D6, two
Pole pipe D7, electric capacity C3, electric capacity C4 and electric capacity C5 form.
During connection, the positive pole of electric capacity C3 is connected with the base stage of audion VT4, and negative pole is with amplifier P3's
Negative pole is connected.Resistance R15 is serially connected between the outfan of amplifier P3 and the negative pole of amplifier P4.Two
The N pole of pole pipe D6 outfan with amplifier P2 after resistance R13 is connected, P pole and Zener diode
The N pole of D2 is connected.The N pole of diode D7 is connected with the P pole of diode D6, and P pole is through resistance
After R14, the source electrode with field effect transistor MOS2 is connected.The P pole phase of the positive pole of electric capacity C4 and diode D7
Connecting, negative pole is connected with the grid of field effect transistor MOS2.The positive pole of electric capacity C5 is with amplifier P4 just
Pole is connected, and negative pole is connected with the outfan of amplifier P4.One end of resistance R16 is negative with electric capacity C5's
Pole is connected, and the other end is connected with the drain electrode of field effect transistor MOS3.
The N pole of described diode D6 is connected with the grid of field effect transistor MOS1.Described field effect transistor
The source electrode of MOS2 is connected with the outfan of amplifier P2, and its drain electrode is connected with the negative pole of amplifier P4,
Grid is then connected with the grid of field effect transistor MOS3.The positive pole of described amplifier P3 and field effect transistor
The source electrode of MOS2 is connected.The drain electrode of described field effect transistor MOS3 is connected with the positive pole of amplifier P2.
The outfan of described amplifier P4 as the outfan of this low-pass filter circuit and is connected with central processing unit.
This noise detection unit can gather the noise signal that tested change speed gear box is operationally sent, and to mixing
Miscellaneous interference signal in noise signal, the noise signal sent such as converter, ambient noise signal etc. are carried out
Filter, make the present invention can preferably identify the noise signal that change speed gear box is sent, and signal is carried out standard
True analysis, so that change speed gear box performance can preferably be judged by tester.Meanwhile, this noise
Detector unit uses the integrated chip of ADP1621 to combine with novel peripheral circuit, greatly improves signal
The speed processed, so that the testing efficiency of the present invention is higher.
During work, tester sends to driving motor inverter and loading motor converter from central processing unit
Command signal, this driving motor inverter then controls variable frequency drive motors work, and loading motor converter is then controlled
Frequency conversion loading motor processed works, and simulates tested change speed gear box and works under various operating modes.At this moment, vibrating sensor
Gather tested change speed gear box vibration signal under various operating modes, and be sent to central processing unit；Torque sensor
Then detect tested change speed gear box output moment of torsion under various operating modes, and send a signal to central processing unit；Make an uproar
Sound transducer in sound detection unit then gathers the noise letter that tested change speed gear box is sent under various operating modes
Number, this noise signal is sent to central processing unit after treatment；Tester can from central processing unit
Solve the various parameters of tested change speed gear box, thus the performance of tested change speed gear box is judged.
As it has been described above, just can well implement the present invention.
Claims (5)
1. a change speed gear box test system, it is characterised in that main by tested change speed gear box, respectively with tested change
Variable frequency drive motors, torque sensor, noise detection unit and the vibrating sensor that speed case is connected, with change
The driving motor inverter that frequency driving motor is connected, the frequency conversion loading motor being connected with torque sensor,
The loading motor converter being connected with frequency conversion loading motor, and simultaneously with drive motor inverter, vibration
The central processing unit group that sensor, torque sensor, noise detection unit are connected with loading motor converter
Become；Described noise detection unit by processing chip U, positive pole with process chip U GND pin be connected,
The electric capacity C1 of minus earth, is serially connected between FREQ pin and the negative pole of electric capacity C1 processing chip U
Resistance R7, P pole is connected with the COMP pin processing chip U, N pole is connected with the negative pole of electric capacity C1
The diode D1 connect, the characteristic extracting circuit being connected with the SDSN pin processing chip U, N pole connects electricity
The Zener diode D2 that source, P pole are connected with the CS pin processing chip U after resistance R10, concatenation
Resistance R9 between the N pole of Zener diode D2 and the IN pin processing chip U, is serially connected in voltage stabilizing
Resistance R8, N pole between N pole and the PIN pin processing chip U of diode D2 and Zener diode
The Zener diode D3 that the P pole of D2 is connected, P pole is connected with the FB pin processing chip U, with place
The gain compensation circuit that the GATE pin of reason chip U is connected, one end and the PGND pipe processing chip U
Foot is connected, the resistance R11 of other end ground connection, the low-pass filter circuit being connected with gain compensation circuit, with
And the sound transducer Q composition being connected with characteristic extracting circuit；The N pole of described Zener diode D2 is also
It is connected with the SDSN pin processing chip U and low-pass filter circuit simultaneously；Described sound transducer Q with
Tested change speed gear box is connected；The outfan of described low-pass filter circuit is connected with central processing unit.
A kind of change speed gear box test system the most according to claim 1, it is characterised in that: described feature carries
Sense circuit, by audion VT1, audion VT2, audion VT3, amplifier P1, is serially connected in audion
Resistance R1 between colelctor electrode and the colelctor electrode of audion VT3 of VT1, is serially connected in sending out of audion VT2
Resistance R2 between the emitter stage of emitter-base bandgap grading and audion VT3, is serially connected in the colelctor electrode and three of audion VT2
Resistance R3 between the colelctor electrode of pole pipe VT3, is serially connected in the electricity between negative pole and the outfan of amplifier P1
Resistance R6, and one end is connected with the outfan of amplifier P1, other end resistance of ground connection after resistance R4
R5 forms；The outfan of described amplifier P1 with process chip U SDSN pin be connected, positive pole with
Resistance R4 is connected with the junction point of resistance R5, its negative pole is connected with the colelctor electrode of audion VT3；Institute
The base stage stating audion VT1 is connected with sound transducer Q, its grounded emitter, its colelctor electrode and its base
Pole is connected；The base stage of described audion VT2 is connected with the colelctor electrode of audion VT1, its colelctor electrode with
The base stage of audion VT3 is connected；The emitter stage of described audion VT3 and the emitter stage of audion VT1
It is connected.
A kind of change speed gear box test system the most according to claim 2, it is characterised in that: described gain is mended
Repay electricity routing amplifier P2, field effect transistor MOS1, audion VT4, P pole and field effect transistor MOS1
Diode D4, the N pole that source electrode is connected, N pole is connected with the positive pole of amplifier P2 is with amplifier P2's
The diode D5 that outfan is connected, P pole is connected with the colelctor electrode of audion VT4, negative pole and audion
The emitter stage of VT4 is connected, the electric capacity C2 of plus earth, and one end is connected with the positive pole of electric capacity C2,
The resistance R12 composition that the other end is connected with the negative pole of amplifier P2；The base stage of described audion VT4 with
Low-pass filter circuit is connected；The positive pole of described amplifier P2 respectively with process chip U GATE pin and
Low-pass filter circuit is connected, its outfan is then connected with low-pass filter circuit；Described field effect transistor MOS1
Drain electrode be connected with the outfan of amplifier P2, its grid is then connected with low-pass filter circuit.
A kind of change speed gear box test system the most according to claim 3, it is characterised in that: described low pass filtered
Wave circuit is by amplifier P3, amplifier P4, field effect transistor MOS2, field effect transistor MOS3, positive pole and three
The electric capacity C3 that the base stage of pole pipe VT4 is connected, negative pole is connected with the negative pole of amplifier P3, is serially connected in and puts
Resistance R15, N pole between outfan and the negative pole of amplifier P4 of big device P3 after resistance R13 with put
Outfan is connected, P pole is connected with the N pole of Zener diode D2 the diode D6, N of big device P2
Pole is connected with the P pole of diode D6, P pole after resistance R14 with the source electrode phase of field effect transistor MOS2
The diode D7 that connects, positive pole is connected with the P pole of diode D7, negative pole and field effect transistor MOS2
The electric capacity C4 that grid is connected, positive pole is connected with the positive pole of amplifier P4, negative pole is defeated with amplifier P4's
Go out the electric capacity C5 that is connected of end, and one end is connected with the negative pole of electric capacity C5, the other end and field effect transistor
The resistance R16 composition that the drain electrode of MOS3 is connected；The N pole of described diode D6 and field effect transistor MOS1
Grid be connected；The source electrode of described field effect transistor MOS2 is connected with the outfan of amplifier P2, its leakage
Pole is connected with the negative pole of amplifier P4, grid is then connected with the grid of field effect transistor MOS3；Described put
The big positive pole of device P3 is connected with the source electrode of field effect transistor MOS2；The drain electrode of described field effect transistor MOS3 with
The positive pole of amplifier P2 is connected；The outfan of described amplifier P4 is as the output of this low-pass filter circuit
End is also connected with central processing unit.
A kind of change speed gear box test system the most according to claim 4, it is characterised in that: described process core
Sheet U is the integrated chip of ADP1621.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610590316.XA CN105973592A (en) | 2016-07-25 | 2016-07-25 | Gearbox test system |
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| CN201610590316.XA CN105973592A (en) | 2016-07-25 | 2016-07-25 | Gearbox test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375986A (en) * | 2019-08-16 | 2019-10-25 | 沈阳工程学院 | A kind of detection of gear transmission noises and analysis system |
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| CN201078749Y (en) * | 2007-01-26 | 2008-06-25 | 北京工业大学 | Rotating equipment fault detection instrument based on acoustic emission technique |
| CN102331345A (en) * | 2011-06-22 | 2012-01-25 | 江苏大学 | Analog loading test device of walking chassis speed changing box of combine harvester |
| CN102419254A (en) * | 2011-09-09 | 2012-04-18 | 南京金鑫传动设备有限公司 | Performance detecting device for gear box and detecting method thereof |
| US20150040654A1 (en) * | 2013-08-06 | 2015-02-12 | Soresh Khateri | Differential lock and differential testing device |
| CN104865067A (en) * | 2015-05-17 | 2015-08-26 | 成都诚邦动力测试仪器有限公司 | Gearbox test system based on trigger coupling circuit |
| CN105115722A (en) * | 2015-08-27 | 2015-12-02 | 成都诚邦动力测试仪器有限公司 | High precision transmission testing system |
| CN105372064A (en) * | 2015-12-01 | 2016-03-02 | 泉州装备制造研究所 | Performance detection and analysis test stand of engineering machinery transmission assembly and test method thereof |
| CN205384141U (en) * | 2015-12-01 | 2016-07-13 | 泉州装备制造研究所 | Engineering machine tool transmission assembly performance detection and analysis test bench |
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| CN110375986A (en) * | 2019-08-16 | 2019-10-25 | 沈阳工程学院 | A kind of detection of gear transmission noises and analysis system |
| CN110375986B (en) * | 2019-08-16 | 2021-05-04 | 沈阳工程学院 | Gear drive noise detection and analysis system |
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Application publication date: 20160928 |