CN102032966A - Torque measuring device of electric executor using direct-current motor - Google Patents
Torque measuring device of electric executor using direct-current motor Download PDFInfo
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- CN102032966A CN102032966A CN 201010535665 CN201010535665A CN102032966A CN 102032966 A CN102032966 A CN 102032966A CN 201010535665 CN201010535665 CN 201010535665 CN 201010535665 A CN201010535665 A CN 201010535665A CN 102032966 A CN102032966 A CN 102032966A
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Abstract
The invention discloses a torque measuring device of an electric executing mechanism using a direct-current motor, comprising a current sampler, a signal regulating unit, an AD sampling unit and a torque calculating and calibrating unit, wherein the current sampler connected with a driver of the direct-current motor transmits obtained current signals to the signal regulating unit; and the AD sampling unit collects the current signals regulated by the signal regulating unit and transforms obtained digital signals by the torque calculating and calibrating unit into torque values of an actual output shaft. The torque measuring device is simple in implementation, convenient in measurement and accurate in measuring result.
Description
Technical field
The present invention relates to a kind of torque measuring device, specifically a kind of torque measuring device of electric operator of the output torque when being used for measuring the actuator running of using direct current class motor.
Background technology
At present mostly be to adopt the method for mechanical pick-up device deformation to measure output torque in the torgue measurement of electric operator, the measurement of mechanical pick-up device deformation measured and changes into the data of output torque.Adopt mechanical deformation to test the method for output torque, and changing sensor wearing and tearing, aging can occur under the many situations of access times, cause the data-bias of measurement and inaccurate the having relatively high expectations of the processing of machinery, manufacturing, assembling.
Summary of the invention
Measure the problem of existence in order to overcome in the prior art mechanical pick-up device mode, the purpose of this invention is to provide a kind of torque measuring device that uses the electric operator of direct current class motor, that this measurement mechanism is installed is simple, measure convenient and measurement result accurate.
The objective of the invention is to be achieved through the following technical solutions:
A kind of torque measuring device that uses the electric operator of direct current class motor, it is characterized in that: this measurement mechanism comprises current sampler, signal condition unit, AD sampling unit and Calculating Torque during Rotary alignment unit, and the current sampler that is connected with direct current class motor driver sends the current signal that obtains to the signal condition unit; AD sampling unit acquired signal is nursed one's health the current signal after the unit conditioning and the digital signal that obtains is converted to the moment values of actual output shaft by the Calculating Torque during Rotary alignment unit.
Among the present invention, in the Calculating Torque during Rotary alignment unit, the actuator electric current is that the Calculating Torque during Rotary formula at the X place of M place correspondence is: X=(a-b) * (M-L)/(H-L)+b; In the formula, the rated moment of actuator is a, and at the b place and the rated moment place of rated moment, two places carry out moment to be demarcated, and the modulus value of demarcation is L and H, and the actuator electric current that the AD sampling unit is measured is M.
The present invention adopts pure electronic circuit and processor to calculate and draws the output rotating torque, compare with traditional measuring method, and the present invention installs and debugging is simple, measurement is convenient and measurement result is accurate, and protection comprehensively.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the experimental data figure that adopts the present invention to draw;
Fig. 3 is the derivation graph of Calculating Torque during Rotary part of the present invention.
Embodiment
A kind of torque measuring device of electric operator of use direct current class motor of the present invention is seen Fig. 1, and this measurement mechanism comprises current sampler 1, signal condition unit 2, AD sampling unit 3 and Calculating Torque during Rotary alignment unit 4.Current sampler 1 is connected with direct current class motor driver 5, and current sampler 1 is connected with signal condition unit 2, AD sampling unit 3 and Calculating Torque during Rotary alignment unit 4 successively.6 is direct current class motor among Fig. 1.Signal condition unit 2 is used to nurse one's health the signal of current sampler 1, and AD sampling unit 3 is used for the signal of acquired signal conditioning unit 2; The digital signal that AD sampling unit 3 obtains is converted to the moment values of actual output shaft by Calculating Torque during Rotary alignment unit 4.
Principle of work of the present invention is: obtain current signal by current sampler 1, by signal condition unit 2 with signal condition, by AD sampling unit 3 signal is converted into digital quantity, calculate the moment values that converts actual output shaft to by Calculating Torque during Rotary alignment unit 4 again, the moment of Calculating Torque during Rotary alignment unit 4 is derived as synoptic diagram 3, and computing method are as follows:
The rated moment of actuator is a, b place and rated moment place in rated moment, two places carry out moment and demarcate, the modulus value L and the H that demarcate are recorded in the Calculating Torque during Rotary alignment unit 4, in the torgue measurement process of reality, it is M that AD sampling unit 3 is measured the actuator electric current, and according to the model of synoptic diagram 3, the Calculating Torque during Rotary formula of deriving the pairing X of M place is: X=(a-b) * (M-L)/(H-L)+b.The calculating of moment is realized in unit 4 by this formula function.
By the test effect of reality, the experimental data that draws is seen Fig. 2.Show in the data, can reach 5% with interior precision the measurement of output shaft moment.
Claims (2)
1. torque measuring device that uses the electric operator of direct current class motor, it is characterized in that: this measurement mechanism comprises current sampler (1), signal condition unit (2), AD sampling unit (3) and Calculating Torque during Rotary alignment unit (4), and the current sampler (1) that is connected with direct current class motor driver (5) sends the current signal that obtains to signal condition unit (2); AD sampling unit (3) acquired signal is nursed one's health the current signal after unit (2) conditioning and the digital signal that obtains is converted to the moment values of actual output shaft by Calculating Torque during Rotary alignment unit (4).
2. the torque measuring device of the electric operator of use direct current class motor according to claim 1, it is characterized in that: in the Calculating Torque during Rotary alignment unit (4), the actuator electric current is that the Calculating Torque during Rotary formula at the X place of M place correspondence is: X=(a-b) * (M-L)/(H-L)+b; In the formula, the rated moment of actuator is a, and at the b place and the rated moment place of rated moment, two places carry out moment to be demarcated, and the modulus value of demarcation is L and H, and the actuator electric current that AD sampling unit (3) is measured is M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010535665 CN102032966A (en) | 2010-11-09 | 2010-11-09 | Torque measuring device of electric executor using direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010535665 CN102032966A (en) | 2010-11-09 | 2010-11-09 | Torque measuring device of electric executor using direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102032966A true CN102032966A (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010535665 Pending CN102032966A (en) | 2010-11-09 | 2010-11-09 | Torque measuring device of electric executor using direct-current motor |
Country Status (1)
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| CN (1) | CN102032966A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1010935A1 (en) * | 1981-09-16 | 1991-05-15 | Предприятие П/Я В-8852 | Device for determining static torque of d.c.mr |
| EP1947437A1 (en) * | 2007-01-17 | 2008-07-23 | Abb Research Ltd. | A method of determining torque |
| CN101697466A (en) * | 2009-10-28 | 2010-04-21 | 上海电机学院 | Servo system for linear motor |
| CN201583368U (en) * | 2010-01-07 | 2010-09-15 | 南京科远自动化集团股份有限公司 | Torque measuring device of electric actuator |
-
2010
- 2010-11-09 CN CN 201010535665 patent/CN102032966A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1010935A1 (en) * | 1981-09-16 | 1991-05-15 | Предприятие П/Я В-8852 | Device for determining static torque of d.c.mr |
| EP1947437A1 (en) * | 2007-01-17 | 2008-07-23 | Abb Research Ltd. | A method of determining torque |
| CN101697466A (en) * | 2009-10-28 | 2010-04-21 | 上海电机学院 | Servo system for linear motor |
| CN201583368U (en) * | 2010-01-07 | 2010-09-15 | 南京科远自动化集团股份有限公司 | Torque measuring device of electric actuator |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110427 |