CN102928141A - Metal resistance strain piece type torque transducer - Google Patents
Metal resistance strain piece type torque transducer Download PDFInfo
- Publication number
- CN102928141A CN102928141A CN 201210440303 CN201210440303A CN102928141A CN 102928141 A CN102928141 A CN 102928141A CN 201210440303 CN201210440303 CN 201210440303 CN 201210440303 A CN201210440303 A CN 201210440303A CN 102928141 A CN102928141 A CN 102928141A
- Authority
- CN
- China
- Prior art keywords
- circuit
- frequency conversion
- toroidal transformer
- ring transformer
- output
- 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.)
- Pending
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A metal resistance strain piece type torque transducer belongs to the technical field of sensing. The transducer comprises an oscillating circuit, a first ring transformer, a second ring transformer, a rectification circuit, a strain bridge, an amplifying circuit and a voltage frequency conversion circuit and a signal processing circuit. The oscillating circuit is connected with the first ring transformer, the first ring transformer is connected with the rectification circuit, the rectification circuit is connected with input of the strain bridge, output of the strain bridge is connected with the amplifying circuit, the amplifying circuit is connected with the voltage frequency conversion circuit, the voltage frequency conversion circuit is connected with the second ring transformer, and output of the second ring transformer is connected with the signal processing circuit. The torque transducer has the advantages of being low in cost, high in measurement accuracy, high in flexibility and wide in application in measuring output torque of a motor.
Description
Technical field
The invention belongs to the detection technology field, particularly a kind of metal resistance strain gauge formula torque sensor.
Background technology
Electric boosting steering system EPS is the power steering system that a kind of direct dependence motor provides auxiliary torque, compare with traditional hydraulic power-assist steering system HPS, the EPS system has lot of advantages: only the ability starter motor produces power-assisted when needs turn to, and can reduce engine fuel consumption; Can under various driving cycles, provide best power-assisted, improve the steering characteristic of automobile, improve the active safety of automobile; Do not have hydraulic circuit, it is easier to adjust and detect, and the assembly automation degree is higher, and can be by different programs is set; There is not Leakage, reduces the pollution to environment.The EPS system is a development trend of following power steering system.Survey moment of torsion that driver's bearing circle when the steering operation produces or the size and Orientation of corner by sensor, and information needed changed into the digital signal Input Control Element, by control module these signals are carried out obtaining a moment that adapts with driving cycle after the computing again, send at last the order-driven motor operation, the output torque of motor is power-assisted by the effect of gearing.Therefore torque sensor is one of most important device in the EPS system.
Summary of the invention
Deficiency for prior art exists the invention provides a kind of metal resistance strain gauge formula torque sensor.
Technical scheme of the present invention is achieved in that this sensor comprises by oscillatory circuit, toroidal transformer 1, toroidal transformer 2, rectification circuit, strain bridge, amplifying circuit, voltage-frequency conversion and signal conditioning circuit and forms, oscillating circuit abutment ring shape transformer 1, toroidal transformer 1 links to each other with rectification circuit, rectification circuit connects the input of strain bridge, the output of strain bridge connects amplifying circuit, amplifying circuit links to each other with voltage-frequency conversion circuit, voltage-frequency conversion circuit links to each other with toroidal transformer 2, and the output of toroidal transformer 2 connects signal conditioning circuit.Paste strainometer at elastic shaft and form measuring bridge, after elastic shaft is subjected to moment of torsion to produce microdeformation, cause that bridge resistance changes, thereby the change transitions of strain bridge resistance is the variation realization torque measurement of electric signal.Sensor is just finished following information conversion: sensor is comprised of elastic shaft, measuring bridge, instrumentation amplifier, interface circuit.Elastic shaft is sensitive element, direction at 45 degree and 135 degree produces maximum crushing stress and tension, and the principle stress that bears this time and shear stress equate, can adopt the semiconductor resistor foil gauge at this moment, and they are connected into differential full-bridge, its output voltage is proportional to the suffered moment of torsion of torsion shaft.
Advantage of the present invention: this sensor have cost low, measure and will spend highly, highly sensitive, when motor is exported torque measurement, be widely used.
Description of drawings
Fig. 1 is metal resistance strain gauge formula torque sensor schematic diagram of the present invention.
Embodiment
Detailed structure of the present invention is illustrated in conjunction with the embodiments.
This metal resistance strain gauge formula torque sensor principle as shown in Figure 1, this sensor comprises by oscillatory circuit, toroidal transformer 1, toroidal transformer 2, rectification circuit, strain bridge, amplifying circuit, voltage-frequency conversion and signal conditioning circuit form, oscillating circuit abutment ring shape transformer 1, toroidal transformer 1 links to each other with rectification circuit, rectification circuit connects the input of strain bridge, the output of strain bridge connects amplifying circuit, amplifying circuit links to each other with voltage-frequency conversion circuit, voltage-frequency conversion circuit links to each other with toroidal transformer 2, and the output of toroidal transformer 2 connects signal conditioning circuit.Paste strainometer at elastic shaft and form measuring bridge, after elastic shaft is subjected to moment of torsion to produce microdeformation, cause that bridge resistance changes, thereby the change transitions of strain bridge resistance is the variation realization torque measurement of electric signal.Sensor is just finished following information conversion: sensor is comprised of elastic shaft, measuring bridge, instrumentation amplifier, interface circuit.Elastic shaft is sensitive element, direction at 45 degree and 135 degree produces maximum crushing stress and tension, and the principle stress that bears this time and shear stress equate, can adopt the semiconductor resistor foil gauge at this moment, and they are connected into differential full-bridge, its output voltage is proportional to the suffered moment of torsion of torsion shaft.
Claims (1)
1. metal resistance strain gauge formula torque sensor, it is characterized in that: this sensor comprises by oscillatory circuit, toroidal transformer 1, toroidal transformer 2, rectification circuit, strain bridge, amplifying circuit, voltage-frequency conversion and signal conditioning circuit form, oscillating circuit abutment ring shape transformer 1, toroidal transformer 1 links to each other with rectification circuit, rectification circuit connects the input of strain bridge, the output of strain bridge connects amplifying circuit, amplifying circuit links to each other with voltage-frequency conversion circuit, voltage-frequency conversion circuit links to each other with toroidal transformer 2, and the output of toroidal transformer 2 connects signal conditioning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210440303 CN102928141A (en) | 2012-11-07 | 2012-11-07 | Metal resistance strain piece type torque transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210440303 CN102928141A (en) | 2012-11-07 | 2012-11-07 | Metal resistance strain piece type torque transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102928141A true CN102928141A (en) | 2013-02-13 |
Family
ID=47642996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210440303 Pending CN102928141A (en) | 2012-11-07 | 2012-11-07 | Metal resistance strain piece type torque transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102928141A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471751A (en) * | 2013-09-26 | 2013-12-25 | 北京空间飞行器总体设计部 | High-precision strain type torque sensor |
| CN103674366A (en) * | 2013-12-12 | 2014-03-26 | 青岛理工大学 | Torque monitoring system of ocean power generation device |
| CN104807576A (en) * | 2015-04-25 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Linear driving type torque sensor with adjustable frequency range |
| CN104807575A (en) * | 2015-04-25 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Torque sensor capable of rapidly responding |
| CN104864992A (en) * | 2015-04-25 | 2015-08-26 | 成都诚邦动力测试仪器有限公司 | Phase-locked type torque sensor for engine performance test |
| CN112284590A (en) * | 2020-09-25 | 2021-01-29 | 重庆秋城机电设备制造有限公司 | Spring motor torque measuring device |
| CN114636491A (en) * | 2022-02-28 | 2022-06-17 | 中航电测仪器股份有限公司 | Moment measuring sensor circuit for airplane |
-
2012
- 2012-11-07 CN CN 201210440303 patent/CN102928141A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471751A (en) * | 2013-09-26 | 2013-12-25 | 北京空间飞行器总体设计部 | High-precision strain type torque sensor |
| CN103471751B (en) * | 2013-09-26 | 2015-05-27 | 北京空间飞行器总体设计部 | High-precision strain type torque sensor |
| CN103674366A (en) * | 2013-12-12 | 2014-03-26 | 青岛理工大学 | Torque monitoring system of ocean power generation device |
| CN103674366B (en) * | 2013-12-12 | 2015-10-07 | 青岛理工大学 | A kind of ocean power generating device torque monitoring system |
| CN104807576A (en) * | 2015-04-25 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Linear driving type torque sensor with adjustable frequency range |
| CN104807575A (en) * | 2015-04-25 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Torque sensor capable of rapidly responding |
| CN104864992A (en) * | 2015-04-25 | 2015-08-26 | 成都诚邦动力测试仪器有限公司 | Phase-locked type torque sensor for engine performance test |
| CN112284590A (en) * | 2020-09-25 | 2021-01-29 | 重庆秋城机电设备制造有限公司 | Spring motor torque measuring device |
| CN114636491A (en) * | 2022-02-28 | 2022-06-17 | 中航电测仪器股份有限公司 | Moment measuring sensor circuit for airplane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102928141A (en) | Metal resistance strain piece type torque transducer | |
| CN103913259B (en) | There is the sextuple torque sensor acquisition system of robot end of auto-compensation and drift compensation method thereof and zero point drift preparation method | |
| CN105015692A (en) | Torque-speed sensing device for center shaft of electric bicycle | |
| CN202092821U (en) | Intrinsic safe digital pressure transducer | |
| CN109795547A (en) | A kind of assist torque control method, device and the vehicle of electric boosting steering system | |
| CN202351418U (en) | Mini magnetic field measurement device based on magnetoresistive effect and magnetic field superposition | |
| CN102636299A (en) | Sensor for measuring six-dimensional force of wheel | |
| CN203069302U (en) | Metal resistance strain piece type torque transducer | |
| CN202066476U (en) | Angle and torque sensor | |
| CN203806093U (en) | Middle axle torque speed sensor of electric bicycle | |
| CN103743508A (en) | Torque moment testing system and torque sensor device | |
| CN201680919U (en) | Motor temperature measuring device of automobile continuously variable transmission | |
| CN104034938B (en) | Current detection circuit in electronic voltage transformer | |
| CN203908724U (en) | High-temperature pressure sensor based on micro-melting technology | |
| CN203587605U (en) | Automobile engine rotation speed measurement device | |
| CN201177540Y (en) | Non-contact type torque transducer | |
| CN203163840U (en) | High precision column type weighing sensor | |
| CN208012623U (en) | A kind of system providing bias voltage for Hall sensor | |
| CN202054046U (en) | Electric power-assisted steering torque transducer ferromagnetic ring concentrator mounting structure | |
| CN210037036U (en) | Non-contact dynamic torque sensor | |
| CN108318058A (en) | A kind of system and method providing bias voltage for Hall sensor | |
| CN203929849U (en) | Current detection circuit in a kind of electronic type voltage transformer | |
| CN208223691U (en) | A kind of electric bridge detection expansion of metal torque sensor | |
| CN112345135A (en) | Non-contact dynamic torque sensor | |
| Zhao | Present situation and development review of torque measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |