CN104142443B - A kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit and detection method - Google Patents
A kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit and detection method Download PDFInfo
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- CN104142443B CN104142443B CN201410313986.8A CN201410313986A CN104142443B CN 104142443 B CN104142443 B CN 104142443B CN 201410313986 A CN201410313986 A CN 201410313986A CN 104142443 B CN104142443 B CN 104142443B
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 239000000919 ceramic Substances 0.000 title claims abstract description 25
- 238000010606 normalization Methods 0.000 claims abstract description 15
- 239000013256 coordination polymer Substances 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 11
- 238000007689 inspection Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Abstract
The open a kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit of the present invention and detection method, including power circuit, driving and decoupling circuit, signal normalization circuit, wherein said power circuit is connected with driving and decoupling circuit, signal normalization circuit respectively, and described driving is connected with signal normalization circuit with decoupling circuit.The present invention provides a kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit and detection method, and it can carry out self-inspection by two-position action positive and negative to piezoelectric ceramic actuator, thus substantially increase the reliability of slide cam selector needle selection, reduces the probability that substandard products occur.
Description
Technical field
The present invention relates to a kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit and detection method.
Background technology
Piezoelectric ceramics has the advantages such as low in energy consumption, electromagnetic-radiation-free as executor, and its application scenario is more and more extensive.?
Field of textile equipment, weaving jacquard weave or knitted jacquard, it is required for a large amount of two executors critical component as slide cam selector, at present
The piezoelectric ceramics application in slide cam selector field is the most ripe.During slide cam selector application, generally require multiple piezoelectric ceramic piece simultaneously
Participate in work, as long as and in use one of them produced problem i.e. can directly result in flower pattern mistake, reduce fabric
Quality.Therefore the reliability detection of slide cam selector action can find production scene problem in time, reduces the probability that substandard products occur.But
The slide cam selector used in the market through transport after a while after, reliability decrease, if being configured with self-checking function, then
The correctness of needle selection action can be monitored in real time, it is ensured that needle selection is reliable.
Summary of the invention
For solving the problems referred to above, it is an object of the invention to provide a kind of piezoelectric ceramic actuator positive and negative two-position action self-inspection
Slowdown monitoring circuit and detection method, it can carry out self-inspection by two-position action positive and negative to piezoelectric ceramic actuator, thus substantially increase choosing
The reliability of pin device needle selection, reduces the probability that substandard products occur.
The present invention is to reach above-mentioned purpose, and the present invention adopts the following technical scheme that
A kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit, including power circuit, driving and decoupling circuit,
Signal normalization circuit, wherein said power circuit respectively with drive and decoupling circuit, signal normalization circuit be connected, described in drive
Move and be connected with signal normalization circuit with decoupling circuit；Described driving and decoupling circuit include the first electric capacity C1, the second electric capacity C2,
3rd electric capacity C3, capacitor CP, voltage source VP, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, described signal normalization
Circuit includes comparator U1, stabilivolt D1, audion Q1, XOR gate U5；Wherein said capacitor CP and the second resistance R2 is in parallel
Rear one end is connected with voltage source VP negative pole, the other end and the 3rd electric capacity C3 series connection, described first electric capacity C1 and the second electric capacity C2 string
It is connected with equivalent voltage source VP positive pole after connection, the circuit between described second electric capacity C2 and equivalent voltage source VP positive pole and power supply electricity
Road is connected；Ground connection after described first electric capacity C1 and the 3rd electric capacity C3 is connected；Line between described capacitor CP and the 3rd electric capacity C3
Lu Yu tri-resistance R3 is connected, and the in-phase input end of described 3rd resistance R3 and comparator U1 is connected；Described first electric capacity C1 with
Circuit and the 4th resistance R4 between second electric capacity C2 are connected, the inverting input phase of described 4th resistance R4 and comparator U1
Connect, and the outfan of described comparator U1 is connected with stabilivolt D1 negative pole；The positive pole of described stabilivolt D1 and the 7th resistance R7 phase
Even, the base stage of described 7th resistance R7 and audion Q1 is connected, the grounded emitter of described audion Q1, and described audion Q1
Base stage and emitter stage on be also parallel with the 6th resistance R6, the colelctor electrode of described audion Q1 respectively with the 5th resistance R5, XOR
Door U5 input is connected, and described power circuit is connected with signal input part IO1, XOR gate U5 input respectively, described XOR gate
U5 outfan is connected with signal output part IO2.
Described power circuit include optocoupler U2A, optocoupler U2B, the first resistance R1, the 8th resistance R8, the 9th resistance R9, the tenth
Resistance R10, wherein said optocoupler U2A are made up of the first light emitting diode and the first phototriode, and described optocoupler U2B is by second
Light emitting diode and the second phototriode composition, described first photosensitive triode colelctor electrode is connected with positive drive voltage Vi1,
Described first photosensitive triode emitter stage passes sequentially through the first resistance R1, the 9th resistance R9 and the second phototriode colelctor electrode phase
Connect, and the circuit between circuit and the second electric capacity C2 and the voltage source VP positive pole between described first resistance R1 and the 9th resistance R9
It is connected；Described first light emitting diode negative pole is connected to the ground by the 8th resistance R8；Described second phototriode emitter stage with
Reverse drive voltages Vi2 is connected, and described second light emitting diode positive pole and the tenth resistance R10 are connected, described second light-emitting diodes
Pipe negative pole and the first light emitting diode positive pole are connected, and between the second light emitting diode negative pole and the first light emitting diode positive pole
Circuit is connected with signal input part IO1, XOR gate U5 input respectively.
The detection method of a kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit, comprises the steps:
1) circuit between described second electric capacity C2 and voltage source VP positive pole and the first resistance R1 and the 9th electricity are first set
Circuit between resistance R9 is connected, and is the voltage driving piezoelectric ceramic piece, is designated as voltage V13 at the circuit point between being connected；Set
It is three at circuit point between the circuit that circuit between colelctor electrode and the 5th resistance R5 of audion Q1 is connected with XOR gate U5
The voltage of pole pipe Q1 colelctor electrode, is designated as voltage V12；Set comparator U1 be connected with stabilivolt D1 negative pole between circuit point at be
The output voltage of comparator U1, is designated as voltage V1；
2) when the voltage of signal input part IO1 input is the high level within circuit, the first luminescence two in optocoupler U2A
Pole pipe turns on the first phototriode, and the second light emitting diode in optocoupler U2B is not turned on the second phototriode；Now power supply
It is positive driving voltage Vi1 that circuit is input to drive the voltage V13 with signal decoupling circuit, and positive driving voltage Vi1 is through the first electric capacity
The inverting input of comparator U1 it is input to after C1 and the second electric capacity C2 dividing potential drop；The most positive driving voltage Vi1 is through voltage source VP, electricity
The in-phase input end of comparator U1 it is input to after holding CP, the 3rd electric capacity C3 dividing potential drop；Comparator U1 output voltage through stabilivolt D1,
Seven resistance R7 rear drive audion Q1, if voltage V12 is equal to high level, then voltage and the voltage V12 of signal input part IO1 passes through
The voltage making signal output part IO2 after XOR gate U5 is low, represents that the deformation of actuator reaches deformation requirement；If voltage V12
Equal to ground, then the voltage of signal input part IO1 and voltage V12 make the voltage of signal output part IO2 to be after XOR gate U5
Height, represents that the deformation of actuator is not up to deformation requirement；
3) when the voltage of signal input part IO1 input is low level, the first light emitting diode in optocoupler U2A is not turned on
First phototriode, second LEDs ON the second phototriode in optocoupler U2B；Now power circuit is input to
Driving and the voltage V13 of signal decoupling circuit is reverse drive voltages Vi2, reverse drive voltages Vi2 is through the first electric capacity C1 and the
Being input to the inverting input of comparator U1 after two electric capacity C2 dividing potential drops, reverse drive voltages Vi2 is through voltage source VP, capacitor simultaneously
The in-phase input end of comparator U1 it is input to after CP, the 3rd electric capacity C3 dividing potential drop；Comparator U1 output voltage through stabilivolt D1, the 7th
Resistance R7 rear drive audion Q1；If voltage V12 is equal to ground, then the voltage of signal input part IO1 and voltage V12 are through XOR gate
The voltage making signal output part I02 after U5 is low level, then it represents that the deformation of actuator reaches deformation requirement；If voltage V12
Equal to high level, then the voltage of signal input part IO1 and voltage V12 make the electricity of signal output part IO2 after XOR gate U5
Pressure is high level, then it represents that the deformation of actuator is not up to deformation requirement.
The invention have the benefit that the present invention provides a kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit
And detection method, it can carry out self-inspection by two-position action positive and negative to piezoelectric ceramic actuator, thus substantially increase slide cam selector choosing
The reliability of pin, reduces the probability that substandard products occur.
Accompanying drawing explanation
Fig. 1 is the structural representation of piezoelectric ceramic actuator of the present invention positive and negative two-position action self-detection circuit.
Detailed description of the invention
Embodiment 1
As it is shown in figure 1, the present embodiment provides a kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit, bag
Including power circuit, driving and decoupling circuit, signal normalization circuit, wherein said power circuit is electric with driving and decoupling respectively
Road, signal normalization circuit are connected, and described driving is connected with signal normalization circuit with decoupling circuit；Described driving and decoupling electricity
Road includes the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, capacitor CP, voltage source VP, the second resistance R2, the 3rd resistance
R3, the 4th resistance R4, described signal normalization circuit includes comparator U1, stabilivolt D1, audion Q1, XOR gate U5；Wherein
After described capacitor CP and the second resistance R2 parallel connection, one end is connected with voltage source VP negative pole, the other end and the 3rd electric capacity C3 series connection,
It is connected with equivalent voltage source VP positive pole after described first electric capacity C1 and the second electric capacity C2 series connection, described second electric capacity C2 and equivalent electric
Circuit between potential source VP positive pole is connected with power circuit；Ground connection after described first electric capacity C1 and the 3rd electric capacity C3 is connected；Described
Circuit and the 3rd resistance R3 between capacitor CP and the 3rd electric capacity C3 are connected, the homophase of described 3rd resistance R3 and comparator U1
Input is connected；Circuit and the 4th resistance R4 between described first electric capacity C1 and the second electric capacity C2 are connected, described 4th resistance
R4 is connected with the inverting input of comparator U1, and the outfan of described comparator U1 is connected with stabilivolt D1 negative pole；Described surely
The positive pole of pressure pipe D1 and the 7th resistance R7 are connected, and the base stage of described 7th resistance R7 and audion Q1 is connected, described audion Q1
Grounded emitter, and be also parallel with the 6th resistance R6 on the base stage of described audion Q1 and emitter stage, described audion Q1's
Colelctor electrode is connected with the 5th resistance R5, XOR gate U5 input respectively, described power circuit respectively with signal input part IO1, different
Or door U5 input is connected, described XOR gate U5 outfan is connected with signal output part IO2.
Described power circuit include optocoupler U2A, optocoupler U2B, the first resistance R1, the 8th resistance R8, the 9th resistance R9, the tenth
Resistance R10, wherein said optocoupler U2A are made up of the first light emitting diode and the first phototriode, and described optocoupler U2B is by second
Light emitting diode and the second phototriode composition, described first photosensitive triode colelctor electrode is connected with positive drive voltage Vi1,
Described first photosensitive triode emitter stage passes sequentially through the first resistance R1, the 9th resistance R9 and the second phototriode colelctor electrode phase
Connect, and the circuit between circuit and the second electric capacity C2 and the voltage source VP positive pole between described first resistance R1 and the 9th resistance R9
It is connected；Described first light emitting diode negative pole is connected to the ground by the 8th resistance R8；Described second phototriode emitter stage with
Reverse drive voltages Vi2 is connected, and described second light emitting diode positive pole and the tenth resistance R10 are connected, described second light-emitting diodes
Pipe negative pole and the first light emitting diode positive pole are connected, and between the second light emitting diode negative pole and the first light emitting diode positive pole
Circuit is connected with signal input part IO1, XOR gate U5 input respectively.
The detection method of a kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit, comprises the steps: first,
First set between the circuit between described second electric capacity C2 and voltage source VP positive pole and the first resistance R1 and the 9th resistance R9
Circuit is connected, and is the voltage driving piezoelectric ceramic piece, is designated as voltage V13 at the circuit point between being connected；Set audion Q1's
It it is audion Q1 current collection at circuit point between the circuit that circuit between colelctor electrode and the 5th resistance R5 is connected with XOR gate U5
The voltage of pole, is designated as voltage V12；Set comparator U1 be connected with stabilivolt D1 negative pole between circuit point at be comparator U1
Output voltage, is designated as voltage V1.Second, when the voltage of signal input part IO1 input is the high level within circuit, optocoupler
First LEDs ON the first phototriode in U2A, the second light emitting diode in optocoupler U2B is not turned on the second light
Quick audion；Now power circuit is input to drive the voltage V13 with signal decoupling circuit is positive driving voltage Vi1, just drives
Voltage Vi1 is input to the inverting input of comparator U1 after the first electric capacity C1 and the second electric capacity C2 dividing potential drop；Just driving electricity simultaneously
Pressure Vi1 is input to the in-phase input end of comparator U1 after voltage source VP, electric capacity CP, the 3rd electric capacity C3 dividing potential drop；Comparator U1 is defeated
Go out voltage through stabilivolt D1, the 7th resistance R7 rear drive audion Q1, if voltage V12 is equal to high level, then signal input part IO1
Voltage and voltage V12 make the voltage of signal output part IO2 be low after XOR gate U5, represent that the deformation of actuator reaches
Deformation requirement；If voltage V12 is equal to ground, then voltage and the voltage V12 of signal input part IO1 makes signal after XOR gate U5
The voltage of outfan IO2 is high, represents that the deformation of actuator is not up to deformation requirement.3rd, when signal input part IO1 input
When voltage is low level, the first light emitting diode in optocoupler U2A is not turned on the first phototriode, second in optocoupler U2B
LEDs ON the second phototriode；Now power circuit is input to drive and the voltage V13 of signal decoupling circuit is
Reverse drive voltages Vi2, reverse drive voltages Vi2 is input to comparator U1's after the first electric capacity C1 and the second electric capacity C2 dividing potential drop
Inverting input, reverse drive voltages Vi2 is input to compare after voltage source VP, capacitor CP, the 3rd electric capacity C3 dividing potential drop simultaneously
The in-phase input end of device U1；Comparator U1 output voltage is through stabilivolt D1, the 7th resistance R7 rear drive audion Q1；If voltage
V12 is equal to ground, then the voltage of signal input part IO1 and voltage V12 make the voltage of signal output part I02 after XOR gate U5
For low level, then it represents that the deformation of actuator reaches deformation requirement；If voltage V12 is equal to high level, then signal input part IO1
Voltage and voltage V12 make the voltage of signal output part IO2 be high level after XOR gate U5, then it represents that the deformation of actuator
Not up to deformation requirement.
A kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit described in the present embodiment and detection method, its energy
Enough two-position actions positive and negative to piezoelectric ceramic actuator carry out self-inspection, thus substantially increase the reliability of slide cam selector needle selection, reduce
The probability that substandard products occur.
Claims (2)
1. a piezoelectric ceramic actuator positive and negative two-position action self-detection circuit, it is characterised in that: include power circuit, driving and
Decoupling circuit, signal normalization circuit, wherein said power circuit respectively with drive and decoupling circuit, signal normalization circuit phase
Even, described driving is connected with signal normalization circuit with decoupling circuit；Described driving and decoupling circuit include the first electric capacity C1,
Two electric capacity C2, the 3rd electric capacity C3, capacitor CP, voltage source VP, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, described letter
Number normalization circuit includes comparator U1, stabilivolt D1, audion Q1, XOR gate U5；Wherein said capacitor CP and second electricity
After resistance R2 parallel connection, one end is connected with voltage source VP negative pole, the other end and the 3rd electric capacity C3 series connection, described first electric capacity C1 and second
It is connected with equivalent voltage source VP positive pole after electric capacity C2 series connection, the circuit between described second electric capacity C2 and equivalent voltage source VP positive pole
It is connected with power circuit；Ground connection after described first electric capacity C1 and the 3rd electric capacity C3 is connected；Described capacitor CP and the 3rd electric capacity C3
Between circuit and the 3rd resistance R3 be connected, the in-phase input end of described 3rd resistance R3 and comparator U1 is connected；Described first
Circuit and the 4th resistance R4 between electric capacity C1 and the second electric capacity C2 are connected, and described 4th resistance R4 and comparator U1's is anti-phase defeated
Enter end to be connected, and the outfan of described comparator U1 is connected with stabilivolt D1 negative pole；The positive pole of described stabilivolt D1 and the 7th electricity
Resistance R7 is connected, and the base stage of described 7th resistance R7 and audion Q1 is connected, the grounded emitter of described audion Q1, and described three
Also be parallel with the 6th resistance R6 in the base stage of pole pipe Q1 and emitter stage, the colelctor electrode of described audion Q1 respectively with the 5th resistance
R5, XOR gate U5 input are connected, and described power circuit is connected with signal input part IO1, XOR gate U5 input respectively, described
XOR gate U5 outfan is connected with signal output part IO2；Described power circuit include optocoupler U2A, optocoupler U2B, the first resistance R1,
8th resistance R8, the 9th resistance R9, the tenth resistance R10, wherein said optocoupler U2A is by the first light emitting diode and first photosensitive three
Pole pipe composition, described optocoupler U2B is made up of the second light emitting diode and the second phototriode, described first photosensitive triode collection
Electrode is connected with positive drive voltage Vi1, and described first photosensitive triode emitter stage passes sequentially through the first resistance R1, the 9th resistance
R9 and the second phototriode colelctor electrode are connected, and the circuit between described first resistance R1 and the 9th resistance R9 and the second electric capacity
Circuit between C2 and voltage source VP positive pole is connected；Described first light emitting diode negative pole is connected to the ground by the 8th resistance R8；
Described second phototriode emitter stage is connected with reverse drive voltages Vi2, described second light emitting diode positive pole and the tenth electricity
Resistance R10 is connected, and described second light emitting diode negative pole and the first light emitting diode positive pole are connected, and the second light emitting diode negative pole
And first the circuit between light emitting diode positive pole be connected with signal input part IO1, XOR gate U5 input respectively.
The detection method of a kind of piezoelectric ceramic actuator the most according to claim 1 positive and negative two-position action self-detection circuit,
It is characterized in that comprising the steps:
1) circuit between described second electric capacity C2 and voltage source VP positive pole and the first resistance R1 and the 9th resistance R9 are first set
Between circuit be connected, be connected between circuit point at be drive piezoelectric ceramic piece voltage, be designated as voltage V13；Set three poles
It is audion at circuit point between the circuit that circuit between colelctor electrode and the 5th resistance R5 of pipe Q1 is connected with XOR gate U5
The voltage of Q1 colelctor electrode, is designated as voltage V12；Set comparator U1 be connected with stabilivolt D1 negative pole between circuit point at be to compare
The output voltage of device U1, is designated as voltage V1；
2) when the voltage of signal input part IO1 input is the high level within circuit, the first light emitting diode in optocoupler U2A
Turning on the first phototriode, the second light emitting diode in optocoupler U2B is not turned on the second phototriode；Now power circuit
Be input to drive and the voltage V13 of signal decoupling circuit be positive driving voltage Vi1, positive driving voltage Vi1 through the first electric capacity C1 and
The inverting input of comparator U1 it is input to after second electric capacity C2 dividing potential drop；The most positive driving voltage Vi1 is through voltage source VP, electric capacity
The in-phase input end of comparator U1 it is input to after CP, the 3rd electric capacity C3 dividing potential drop；Comparator U1 output voltage through stabilivolt D1, the 7th
Resistance R7 rear drive audion Q1, if voltage V12 is equal to high level, then the voltage of signal input part IO1 and voltage V12 are through different
Or to make the voltage of signal output part IO2 after door U5 be low, represent that the deformation of actuator reaches deformation requirement；If voltage V12 etc.
In earth potential, then the voltage of signal input part IO1 and voltage V12 make the voltage of signal output part IO2 after XOR gate U5
For height, represent that the deformation of actuator is not up to deformation requirement；
3) when the voltage of signal input part IO1 input is low level, the first light emitting diode in optocoupler U2A is not turned on first
Phototriode, second LEDs ON the second phototriode in optocoupler U2B；Now power circuit is input to drive
Being reverse drive voltages Vi2 with the voltage V13 of signal decoupling circuit, reverse drive voltages Vi2 is through the first electric capacity C1 and second electricity
Hold the inverting input being input to comparator U1 after C2 dividing potential drop, simultaneously reverse drive voltages Vi2 through voltage source VP, capacitor CP,
The in-phase input end of comparator U1 it is input to after 3rd electric capacity C3 dividing potential drop；Comparator U1 output voltage is through stabilivolt D1, the 7th electricity
Resistance R7 rear drive audion Q1；If voltage V12 is equal to earth potential, then the voltage of signal input part IO1 and voltage V12 are through XOR
The voltage making signal output part I02 after door U5 is low level, then it represents that the deformation of actuator reaches deformation requirement；If voltage
V12 is equal to high level, then voltage and the voltage V12 of signal input part IO1 makes signal output part IO2's after XOR gate U5
Voltage is high level, then it represents that the deformation of actuator is not up to deformation requirement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410313986.8A CN104142443B (en) | 2014-07-03 | 2014-07-03 | A kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410313986.8A CN104142443B (en) | 2014-07-03 | 2014-07-03 | A kind of piezoelectric ceramic actuator positive and negative two-position action self-detection circuit and detection method |
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| CN104142443B true CN104142443B (en) | 2016-08-17 |
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| CN112394235B (en) * | 2020-11-18 | 2023-10-24 | 浙江理工大学 | Piezoelectric element detection system, method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348471A (en) * | 1986-08-18 | 1988-03-01 | Fujitsu Ltd | Piezoelectric filter testing circuit |
| JP2004045277A (en) * | 2002-07-12 | 2004-02-12 | Suzuki Co Ltd | Load detecting method for actuator |
| CN101806875A (en) * | 2009-02-13 | 2010-08-18 | 无锡油泵油嘴研究所 | Diagnosis detecting method of piezoelectric executor and device thereof |
| CN102128995A (en) * | 2010-12-24 | 2011-07-20 | 上海电机学院 | Device and method for real-time online identifying piezoelectric parameters of piezoelectric ceramic |
-
2014
- 2014-07-03 CN CN201410313986.8A patent/CN104142443B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348471A (en) * | 1986-08-18 | 1988-03-01 | Fujitsu Ltd | Piezoelectric filter testing circuit |
| JP2004045277A (en) * | 2002-07-12 | 2004-02-12 | Suzuki Co Ltd | Load detecting method for actuator |
| CN101806875A (en) * | 2009-02-13 | 2010-08-18 | 无锡油泵油嘴研究所 | Diagnosis detecting method of piezoelectric executor and device thereof |
| CN102128995A (en) * | 2010-12-24 | 2011-07-20 | 上海电机学院 | Device and method for real-time online identifying piezoelectric parameters of piezoelectric ceramic |
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Effective date of registration: 20220809 Address after: No. 605, 6th Floor, No. 65, Kejiyuan Road, Hangzhou Economic and Technological Development Zone, Hangzhou City, Zhejiang Province, 310018 Patentee after: Hangzhou Xuren Automation Co.,Ltd. Address before: 310018 No. 928, No. 2 Avenue, Baiyang Street, Hangzhou Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG SCI-TECH University |
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