CN203705942U - Simulation circuit with electrical characteristics of LVDT/RVDT sensors - Google Patents
Simulation circuit with electrical characteristics of LVDT/RVDT sensors Download PDFInfo
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- CN203705942U CN203705942U CN201320817242.0U CN201320817242U CN203705942U CN 203705942 U CN203705942 U CN 203705942U CN 201320817242 U CN201320817242 U CN 201320817242U CN 203705942 U CN203705942 U CN 203705942U
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- 238000004088 simulation Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
本实用新型涉及一种LVDT/RVDT传感器电气特性的仿真电路，其高低端和值与差值的变化可独立控制，便于测试过程根据需要的变化。本实用新型采取的技术方案包括：第一乘法器、第二乘法器、加法器和减法器；所述第一乘法器的第一输入端与第一路可变直流信号源连接；所述第一乘法器的第二输入端与交流信号参考源连接；所述第一乘法器的输出端分别连接加法器的第一输入端和减法器的第一输入端；所述第二乘法器的第一输入端与交流信号参考源连接；所述第二乘法器的第二输入端与第二路可变直流信号源连接；所述第二乘法器的输出端分别连接加法器的第二输入端和减法器的第二输入端。
The utility model relates to a simulation circuit of the electrical characteristics of an LVDT/RVDT sensor. The change of the sum value and the difference value of the high and low ends can be independently controlled, so that the test process can be changed according to the needs. The technical solution adopted by the utility model includes: a first multiplier, a second multiplier, an adder and a subtractor; the first input end of the first multiplier is connected to the first variable DC signal source; the first The second input end of a multiplier is connected with the AC signal reference source; the output end of the first multiplier is respectively connected with the first input end of the adder and the first input end of the subtractor; the first input end of the second multiplier One input terminal is connected to the AC signal reference source; the second input terminal of the second multiplier is connected to the second variable DC signal source; the output terminals of the second multiplier are respectively connected to the second input terminals of the adder and the second input of the subtractor.
Description
Technical field
The utility model relates to the artificial circuit of the electric characteristic of a kind of LVDT/RVDT sensor, belongs to electronic circuit design field.
Background technology
Flight control computer, as the vitals of aircraft, need to carry out analog simulation for the signal of external sensor in its test process, as test and excitation signal input computing machine, function and the performance of testing flight control computer with this.
The ac sensor using on aircraft, mostly be LVDT/RVDT type sensor, the feature that these sensors have is to have high low side centering drawer to have synchronous signal output, a kind of sensor with value be that it is intrinsic constant, the difference of high low side is sent to computer acquisition as the displacement indicatrix of sensor, and value is as the whether normal monitoring parameter of sensor is monitored by computing machine.For whether the work of detection computations machine is normal, need to, constant with value in the situation that, change difference, whether whether detection computations machine gathers correctly, also will change and be worth with detection computations machine simultaneously and can normally monitor and failure warning.
At present in this field, conventional sensor Simulation model is to use transformer, in the input of limit, source with signal frequently, according to sensor and value, determine the scale-up factor of transformer coil.Re-use variable resistor, regulate the output voltage of high low side, reach the object that difference changes.Once the drawback of this method is selected transformer, cannot change with value, cannot provide the excitation of computer monitoring fault mode, and the precision of transformer coil is the measuring accuracy of too late computing machine often, cause computer acquisition error larger, the power consumption of transformer is relatively high in addition, and easily other low power consumption circuit is easily caused to interference.
Another kind method is directly to use D/A device to carry out the two-way output of height homology, though improved like this precision of output, but but difference to and the variation of value be but real-time relevant, if will only change difference, or only changing and being worth all needs to calculate by equation, could determine the output valve of two-way, the peripheral circuit of D/A output is comparatively numerous and jumbled in addition, and cost is higher.
Summary of the invention
The purpose of this utility model is the artificial circuit that proposes the electric characteristic of a kind of LVDT/RVDT sensor, and the variation of its high low side and value and difference can independently be controlled, and is convenient to test process variation as required.
The technical scheme that the utility model is taked is that the artificial circuit of the electric characteristic of a kind of LVDT/RVDT sensor, comprising:
The first multiplier, the second multiplier, totalizer and subtracter;
The first input end of described the first multiplier is connected with the variable DC signal source of the first via;
The second input end of described the first multiplier is connected with AC signal reference source;
The output terminal of described the first multiplier connects respectively the first input end of totalizer and the first input end of subtracter;
The first input end of described the second multiplier is connected with AC signal reference source;
The second input end of described the second multiplier is connected with the second variable DC signal source in tunnel;
The output terminal of described the second multiplier connects respectively the second input end of totalizer and the second input end of subtracter.
The advantage the utlity model has and beneficial effect: circuit design of the present utility model is to utilize mathematical method to change cleverly only becoming to input in two variablees one relevant with value difference value output, if need to change so wherein a kind of output area in test process, only need simple computation and control relative input signal to obtain big or small, just can carry out regulating to the height end value of excitation output changing simultaneously, meet different demands in test.
It is simple that this circuit is realized circuit, mostly is conventional basic device, transreplication is realized, and can be used for the sensor output circuit of multiple analog LVDT or RVDT, and avoided the interference that in circuit in the past, transformer causes other circuit.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the utility model circuit design.
Embodiment
The artificial circuit of the electric characteristic of a kind of LVDT/RVDT sensor of the utility model, as shown in Figure 1, comprising:
The first multiplier A', the second multiplier B', totalizer X and subtracter Y;
The first input end of described the first multiplier A' is connected with controlled value A (the variable DC signal source of the first via);
The second input end of described the first multiplier A' is connected with AC signal reference source;
The output terminal of described the first multiplier A' connects respectively the first input end of totalizer X and the first input end of subtracter Y;
The first input end of described the second multiplier B' is connected with AC signal reference source;
The second input end of described the second multiplier B' is connected with controlled value B (the second variable DC signal source in tunnel);
The output terminal of described the second multiplier B' connects respectively the second input end of totalizer X and the second input end of subtracter Y.
The utility model implementation method:
The controlled value A of direct current signal and AC power reference source multiply each other and produce A'(through multiplier A' realization).
The controlled value B of direct current signal and AC power reference source multiply each other and produce B'(through multiplier B' realization).
By totalizer X, A'+B' produces the high-end H of output drive signal.
By subtracter Y, A'-B' produces the low side L of output drive signal.
If need, to exporting adjusting with value of two paths of signals, only need adjust the controllable voltage of A; If need, to the adjusting with value difference value of two paths of signals, only need adjust with controllable voltage A B.If need change in proportion and only need to change adjustment to AC power reference source the frequency of two paths of signals or amplitude.
Embodiment
Still the signal of the 5V2000HZ being produced by signal generator as shown in Figure 1;
Exported respectively at the variable controlled value A of direct current signal, B between-10V～+ 10V by computer control numeral D/A board output two-way size, and add separately the follower that one-level operational amplifier LM148 builds and carry out driving isolation;
Two signals are multiplied each other with multiplier AD534 and 5V2000HZ respectively, produce the same-phase AC signal A' of two-way 2000HZ, B'
A'＝(A-0)(5-0)/10＝0.5A
B'＝(B-0)(5-0)/10＝0.5B
By two-way AC signal A', B' is carried out summation operation and is asked difference operation by input adding circuit;
Output and value=2 × A'=A
Output difference=2 × B'=B
Operation result is added respectively to the follower that one-level amplifier LM148 builds and export isolation;
Will be in analog (AGND) signal as in pump out.
High-end and the low side of output drive signal is (A'+B')+(A'-B')=2A ' with being worth like this
The difference of the high-end and low side of output drive signal is (A'+B')-(A'-B')=2B '
If need, to the changing with value of output drive, only need adjust A road controllable voltage.
If need change the difference of output drive, only need adjust B road controllable voltage.
If need to change the frequency of output drive, only need adjust the frequency of reference power source.
If need, to the leading to ratio with value difference value and change of output drive, only need adjust the amplitude of reference power source.
Applicating example: in the time that needs are exported and be worth for 8Vrms (volt AC value), a-signal is adjusted to 8V,
In the time that needs are exported difference and are 2Vrms, B Signal Regulation is become to 2V, when needs with value 8Vrms, when difference is 2Vrms, output signal become and be worth 4Vrms, difference 1Vrms, frequency is 2500HZ, only AC signal generator need to be adjusted to 2.5Vrms, the output of 2500HZ.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320817242.0U CN203705942U (en) | 2013-12-11 | 2013-12-11 | Simulation circuit with electrical characteristics of LVDT/RVDT sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320817242.0U CN203705942U (en) | 2013-12-11 | 2013-12-11 | Simulation circuit with electrical characteristics of LVDT/RVDT sensors |
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| Publication Number | Publication Date |
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| CN203705942U true CN203705942U (en) | 2014-07-09 |
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| CN201320817242.0U Expired - Lifetime CN203705942U (en) | 2013-12-11 | 2013-12-11 | Simulation circuit with electrical characteristics of LVDT/RVDT sensors |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608279A (en) * | 2015-12-29 | 2016-05-25 | 北京经纬恒润科技有限公司 | Method and device for simulation design of differential transformer displacement transducer |
| CN106774114A (en) * | 2016-12-02 | 2017-05-31 | 武汉航空仪表有限责任公司 | One section carries out display control method to angle of attack sensor output signal |
| CN108007328A (en) * | 2017-11-08 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of method of simulation data variable differential transformer class sensor signal |
| CN108170128A (en) * | 2017-12-28 | 2018-06-15 | 西安庆安航空试验设备有限责任公司 | Simulator, analogy method and the simulated assembly of LVDT input-output characteristics |
| CN105444663B (en) * | 2014-09-28 | 2018-07-24 | 中国航空工业集团公司西安飞机设计研究所 | A kind of RVDT design methods based on black box |
| CN109445321A (en) * | 2018-09-29 | 2019-03-08 | 庆安集团有限公司 | A kind of Sensor Signal Simulation Circuit |
| CN110989401A (en) * | 2019-12-19 | 2020-04-10 | 中国航空工业集团公司沈阳飞机设计研究所 | RVDT characteristic mechanism excitation device for liquid cooling system test |
| CN112394707A (en) * | 2020-10-30 | 2021-02-23 | 中国航发西安动力控制科技有限公司 | Circuit for simulating dynamic model of position sensor LVDT of aero-engine fuel regulator |
| CN114660957A (en) * | 2022-04-06 | 2022-06-24 | 北京蓝天航空科技股份有限公司 | Redundancy RVDT excitation simulation equipment and method for exciting flight control system |
-
2013
- 2013-12-11 CN CN201320817242.0U patent/CN203705942U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444663B (en) * | 2014-09-28 | 2018-07-24 | 中国航空工业集团公司西安飞机设计研究所 | A kind of RVDT design methods based on black box |
| CN105608279B (en) * | 2015-12-29 | 2018-10-16 | 北京经纬恒润科技有限公司 | A kind of differential transformer displacement transducer emulation design method and device |
| CN105608279A (en) * | 2015-12-29 | 2016-05-25 | 北京经纬恒润科技有限公司 | Method and device for simulation design of differential transformer displacement transducer |
| CN106774114A (en) * | 2016-12-02 | 2017-05-31 | 武汉航空仪表有限责任公司 | One section carries out display control method to angle of attack sensor output signal |
| CN108007328A (en) * | 2017-11-08 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of method of simulation data variable differential transformer class sensor signal |
| CN108170128B (en) * | 2017-12-28 | 2020-03-31 | 西安庆安航空试验设备有限责任公司 | LVDT input/output characteristic simulation device, LVDT input/output characteristic simulation method and LVDT input/output characteristic simulation module |
| CN108170128A (en) * | 2017-12-28 | 2018-06-15 | 西安庆安航空试验设备有限责任公司 | Simulator, analogy method and the simulated assembly of LVDT input-output characteristics |
| CN109445321A (en) * | 2018-09-29 | 2019-03-08 | 庆安集团有限公司 | A kind of Sensor Signal Simulation Circuit |
| CN110989401A (en) * | 2019-12-19 | 2020-04-10 | 中国航空工业集团公司沈阳飞机设计研究所 | RVDT characteristic mechanism excitation device for liquid cooling system test |
| CN110989401B (en) * | 2019-12-19 | 2023-04-07 | 中国航空工业集团公司沈阳飞机设计研究所 | RVDT characteristic mechanism excitation device for liquid cooling system test |
| CN112394707A (en) * | 2020-10-30 | 2021-02-23 | 中国航发西安动力控制科技有限公司 | Circuit for simulating dynamic model of position sensor LVDT of aero-engine fuel regulator |
| CN114660957A (en) * | 2022-04-06 | 2022-06-24 | 北京蓝天航空科技股份有限公司 | Redundancy RVDT excitation simulation equipment and method for exciting flight control system |
| CN114660957B (en) * | 2022-04-06 | 2024-01-26 | 北京蓝天航空科技股份有限公司 | Redundancy RVDT excitation simulation equipment and method for exciting flight control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170418 Address after: 710065 Xi'an, Shaanxi, No. 1 electronic road, No. 92 Patentee after: XI'AN FLIGHT AUTOMATIC CONTROL Research Institute Address before: 710065 Xi'an, Xi'an Yanta District, electronic first road, No. 92 Patentee before: China Aviation Industry Institute No. 618 |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710065 No. 92, electronic road, Xi'an, Shaanxi Patentee after: Xi'an Hengxiang Control Technology Co.,Ltd. Address before: 710065 No. 92, electronic road, Xi'an, Shaanxi Patentee before: XI'AN FLIGHT AUTOMATIC CONTROL Research Institute |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |