CN202974560U - Direct loading type force sensor dynamic calibration device - Google Patents
Direct loading type force sensor dynamic calibration device Download PDFInfo
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- CN202974560U CN202974560U CN 201220614559 CN201220614559U CN202974560U CN 202974560 U CN202974560 U CN 202974560U CN 201220614559 CN201220614559 CN 201220614559 CN 201220614559 U CN201220614559 U CN 201220614559U CN 202974560 U CN202974560 U CN 202974560U
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- guide rail
- power sensor
- fastenedly connected
- generating means
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Abstract
A direct loading type force sensor dynamic calibration device comprises a force sensor, a connecting rod, a linear guide rail assembly, a rack and a sinusoidal force generating device, wherein the linear guide rail assembly comprises a moving guide rail and a static guide rail, the force sensor is tightly connected with the rack, a casing of the sinusoidal force generating device is tightly connected with the force sensor through the connecting rod, the casing of the sinusoidal force generating device is connected with the static guide rail through the moving guide rail in a sliding mode, the static guide rail is tightly connected with the rack, and the moving direction of the moving guide rail is consistent with the force direction required by calibration of the force sensor. The direct loading type force sensor dynamic calibration device is high in calibration precision, wide in measuring range and reliable in calibration result.
Description
Technical field
The utility model relates to caliberating device, especially a kind of force sensor caliberating device.
Background technology
The dynamic calibration technology of power sensor is the gordian techniquies of the fields such as Aero-Space, high-end equipment aspect accurate observing and controlling.From the achievement in research of publishing, the caliberating device of more domestic aerospace studies units is mainly set up with reference to the technical scheme (comprising follow-up improvement project) that German federal physical technique research institute proposes the beginning of the nineties in last century.This class scheme can be described as the power sensor dynamic calibration technology based on vibratory response, belong to non-direct load mode, its major defect is that power sensor and dynamic force generation mass are placed in vibration environment simultaneously, be not inconsistent the service condition of sensor with joint efforts, and have the larger factor that affects stated accuracy, so the reliability of its dynamic calibration result is relatively poor, precision is lower.
Summary of the invention
In order to overcome the deficiencies such as the reliability that has power sensor dynamic calibration apparatus is relatively poor, precision is lower, range is less, the utility model provides the direct loaded type power sensor dynamic calibration apparatus that a kind of reliability is better, stated accuracy is higher, range is larger.
The technical scheme that its technical matters that solves the utility model adopts is:
a kind of direct loaded type power sensor dynamic calibration apparatus, comprise the power sensor, connecting link, line slideway assembly and frame, wherein the line slideway assembly comprises moving guide rail and quiet guide rail, described caliberating device also comprises the sinusoidal force generating means, described power sensor and frame are fastenedly connected, the casing of described sinusoidal force generating means is fastenedly connected by connecting link and power sensor, the casing of described sinusoidal force generating means also is slidably connected by moving guide rail and quiet guide rail, quiet guide rail is fastenedly connected with frame again, the direction of motion of moving guide rail is subjected to force direction consistent with the force sensor caliberating requirement.
Further, described sinusoidal force generating means comprises mass eccentricity dish, main shaft, bearing, rotor, motor stator and casing, described rotor is fastenedly connected at the main shaft middle part, main shaft is bearing in casing by the bearing that is arranged in rotor both sides, the mass eccentricity dish is fastenedly connected respectively the two ends at main shaft, motor stator is sleeved in casing and with casing and is fastenedly connected, and rotor is arranged in the hollow circuit cylinder cavity of motor stator; Described casing is fixedly connected with moving guide rail.Certainly, described sinusoidal force generating means also can be selected other forms, such as the mass eccentricity slewing equipment of twin shaft four disc types and unpowered mass eccentricity slewing equipment etc.
Further, the geometric center of described mass eccentricity dish has circular hole and keyway, and the non-geometric center position of mass eccentricity dish has other circular hole.
Preferably, be positioned at structure, the size and identical in quality of two mass eccentricity dishes at main shaft two ends.In theory, the most desirable to realizing the utility model when both are identical, from Practical manufacturing, it is as far as possible identical that this place identical refers to from manufacturing technology, namely produces as far as possible structure, size and two mass eccentricity dishes identical in quality.
Further, described casing bottom is provided with spring, and spring-loaded is on arrangement for adjusting height, and described arrangement for adjusting height is bearing in frame.
Described sinusoidal force generating means also comprises induction gear and speed probe, and induction gear is fastenedly connected on main shaft, and speed probe is fastenedly connected on casing by support.
Described sinusoidal force generating means also comprises acceleration transducer, and acceleration transducer is fastenedly connected on casing.
Described sinusoidal force generating means also comprises non-contact displacement transducer, the surface of the alignment probe casing of non-contact displacement transducer, and non-contact displacement transducer is fastenedly connected on frame by support.
Technical conceive of the present utility model is: power sensor to be calibrated is fastenedly connected on frame; Dynamic force adopts the sinusoidal force generating means to produce, this device is to be fastenedly connected two structures, size and mass eccentricity dish identical in quality at the two ends of an electric main shaft, the casing of electricity main shaft retrains by line slideway, only stay an one-movement-freedom-degree vertical with main-shaft axis, the component of centrifugal force on this one-movement-freedom-degree direction that the mass eccentricity disc spins produces is a sinusoidal force; This sinusoidal force is applied on the power sensor, can carries out dynamic calibration to the power sensor.
The beneficial effects of the utility model are mainly manifested in: adopt the sinusoidal force generating means can produce accurate sinusoidal force, and directly fixed power sensor is loaded, can obtain by means of signal processing technology the dynamic calibration result that reliability is high, precision is high and range is large.
Description of drawings
Fig. 1 is the structural representation of power sensor dynamic calibration apparatus embodiment.
Fig. 2 is the structural representation of sinusoidal force generating means embodiment.
Fig. 3 is the structural representation of mass eccentricity dish embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
with reference to Fig. 1～Fig. 3, a kind of direct loaded type power sensor dynamic calibration apparatus, comprise power sensor 1, connecting link 2, sinusoidal force generating means 3, line slideway assembly and frame, wherein the line slideway assembly comprises moving guide rail 5 and quiet guide rail 6, power sensor 1 is fastenedly connected with frame 4, the casing 16 of sinusoidal force generating means is fastenedly connected by connecting link 2 and power sensor 1, the casing 16 of sinusoidal force generating means also is slidably connected with quiet guide rail 6 by moving guide rail 5, quiet guide rail 6 is fastenedly connected with frame 7 again, the direction of motion of moving guide rail is subjected to force direction consistent with the force sensor caliberating requirement, namely with reference to Fig. 1, the sinusoidal force generating means is subjected to the line slideway component constraint, it only keeps in Six-freedom-degree space and is subjected to the consistent one-movement-freedom-degree of force direction K with the power sensor.
Wherein, described sinusoidal force generating means 3 mainly comprises mass eccentricity dish 11a and b, main shaft 12, bearing 13a and b, rotor 14, motor stator 15 and casing 16, rotor 14 is fastenedly connected the middle part at main shaft 12, main shaft 12 is bearing in casing 16 by bearing 13a and the b that is arranged in rotor 14 both sides, mass eccentricity dish 11a and b are fastenedly connected the two ends at main shaft 12, motor stator 15 is sleeved in casing 16 and with casing 16 and is fastenedly connected, and rotor 14 is arranged in the hollow circuit cylinder space of motor stator 15.
Be fastenedly connected in structure, size and the quality of the mass eccentricity dish 11a at main shaft 12 two ends and b identical in described sinusoidal force generating means.In theory, the most desirable to realizing the utility model when both are identical, from Practical manufacturing, it is as far as possible identical that this place identical refers to from manufacturing technology, namely produces as far as possible structure, size and two mass eccentricity dishes identical in quality.
Casing 16 bottoms of described sinusoidal force generating means are provided with spring 8, spring 8 is bearing on arrangement for adjusting height 9, arrangement for adjusting height 9 is bearing on frame 10, upwards its size of thrust that spring 8 pressurizeds produce approximates the weight of sinusoidal force generating means, and its direction is subjected to force direction K consistent with the power sensor.
Described sinusoidal force generating means also comprises induction gear 17 and speed probe 18, and induction gear 17 is fastenedly connected on main shaft 12, and speed probe 18 is fastenedly connected on casing 16 by support 19.
Described sinusoidal force generating means also comprises acceleration transducer 20, and acceleration transducer 20 is fastenedly connected on casing 16.
Described sinusoidal force generating means also comprises non-contact displacement transducer 21, the surface of the alignment probe casing 16 of non-contact displacement transducer 21, and non-contact displacement transducer 21 is fastenedly connected on frame 4 by support 22.
The groundwork process of the present embodiment is:
1) switch on for the motor stator in the sinusoidal force generating means, rotor is rotated by the electromagnetic force driving, and drives main shaft and the rotation of mass eccentricity dish;
2) the mass eccentricity dish rotate to produce centrifugal force, this centrifugal force can be decomposed into the power sensor be subjected to the first consistent component F1 of force direction and with the second component F2 of the stressed perpendicular direction of power sensor, wherein the expression formula of the first component F1 is
F1=Asin(ωt) （1）
In formula, A is the mass eccentricity distance of mass eccentricity dish, and ω is the angular velocity that rotatablely moves (detecting acquisition by speed probe) of mass eccentricity dish, and t is the time;
3) the first component F1 passes to the power sensor by casing and the connecting link of sinusoidal force generating means, the second component F2 by the sinusoidal force generating means casing and the line slideway component passes to frame;
4) the power sensor is exported continuous electric signal E under the first component F1 effect, and the expression formula of this electric signal E is
E=(B+dB)sin(ω(t+dt)) （2）
In formula, B is the numerical value with the proportional relation of A, dB is dynamic interference (detects by acceleration transducer and non-contact displacement transducer and obtain), ω and t in ω and t and formula (1) are identical, and dt is time lag (detecting acquisition by acceleration transducer).
5) compare electric signal E and the first component F1, can calibrate the power sensor.
Claims (8)
1. direct loaded type power sensor dynamic calibration apparatus, comprise the power sensor, connecting link, line slideway assembly and frame, wherein the line slideway assembly comprises moving guide rail and quiet guide rail, it is characterized in that: described caliberating device also comprises the sinusoidal force generating means, described power sensor and frame are fastenedly connected, the casing of described sinusoidal force generating means is fastenedly connected by connecting link and power sensor, the casing of described sinusoidal force generating means also is slidably connected by moving guide rail and quiet guide rail, quiet guide rail is fastenedly connected with frame again, the direction of motion of moving guide rail and force sensor caliberating requirement is subjected to force direction consistent in frame.
2. direct loaded type power sensor dynamic calibration apparatus as claimed in claim 1, it is characterized in that: described sinusoidal force generating means comprises mass eccentricity dish, main shaft, bearing, rotor, motor stator and casing, described rotor is fastenedly connected at the main shaft middle part, main shaft is bearing in casing by the bearing that is arranged in rotor both sides, the mass eccentricity dish is fastenedly connected respectively the two ends at main shaft, motor stator is sleeved in casing and with casing and is fastenedly connected, and rotor is arranged in the hollow circuit cylinder cavity of motor stator; Described casing is fixedly connected with moving guide rail.
3. direct loaded type power sensor dynamic calibration apparatus as claimed in claim 2, it is characterized in that: the geometric center of described mass eccentricity dish has circular hole and keyway, and the non-geometric center position of mass eccentricity dish has other hole.
4. direct loaded type power sensor dynamic calibration apparatus as claimed in claim 2 or claim 3 is characterized in that: the structure, the size and identical in quality that are positioned at two mass eccentricity dishes at main shaft two ends.
5. direct loaded type power sensor dynamic calibration apparatus as described in one of claim 1 ~ 3 is characterized in that: described casing bottom is provided with spring, and spring-loaded is on arrangement for adjusting height, and described arrangement for adjusting height is bearing in frame.
6. direct loaded type power sensor dynamic calibration apparatus as described in one of claim 1 ~ 3, it is characterized in that: described sinusoidal force generating means also comprises induction wheel and speed probe, induction wheel is fastenedly connected on main shaft, and speed probe is fastenedly connected on casing by support.
7. direct loaded type power sensor dynamic calibration apparatus as described in one of claim 1 ~ 3, it is characterized in that: described sinusoidal force generating means also comprises acceleration transducer, and acceleration transducer is fastenedly connected on casing.
8. direct loaded type power sensor dynamic calibration apparatus as described in one of claim 1 ~ 3, it is characterized in that: described sinusoidal force generating means also comprises non-contact displacement transducer, the surface of the alignment probe casing of non-contact displacement transducer, non-contact displacement transducer is fastenedly connected on frame by support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220614559 CN202974560U (en) | 2012-11-19 | 2012-11-19 | Direct loading type force sensor dynamic calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220614559 CN202974560U (en) | 2012-11-19 | 2012-11-19 | Direct loading type force sensor dynamic calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974560U true CN202974560U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220614559 Expired - Fee Related CN202974560U (en) | 2012-11-19 | 2012-11-19 | Direct loading type force sensor dynamic calibration device |
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| CN (1) | CN202974560U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980719A (en) * | 2012-11-19 | 2013-03-20 | 浙江工业大学 | Direct loading type force sensor dynamic calibration device |
| CN109238561A (en) * | 2018-09-14 | 2019-01-18 | 上海市计量测试技术研究院 | A kind of measurement method of force snesor dynamic sensitivity |
| CN110252712A (en) * | 2019-06-05 | 2019-09-20 | 浙江工业大学 | The device for cleaning and demarcating for water quality detection sensor |
-
2012
- 2012-11-19 CN CN 201220614559 patent/CN202974560U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980719A (en) * | 2012-11-19 | 2013-03-20 | 浙江工业大学 | Direct loading type force sensor dynamic calibration device |
| CN102980719B (en) * | 2012-11-19 | 2015-04-22 | 浙江工业大学 | Direct loading type force sensor dynamic calibration device |
| CN109238561A (en) * | 2018-09-14 | 2019-01-18 | 上海市计量测试技术研究院 | A kind of measurement method of force snesor dynamic sensitivity |
| CN110252712A (en) * | 2019-06-05 | 2019-09-20 | 浙江工业大学 | The device for cleaning and demarcating for water quality detection sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151119 |
|
| EXPY | Termination of patent right or utility model |