CN101655509A - Overspeed (rotating speed) calibration device - Google Patents
Overspeed (rotating speed) calibration device Download PDFInfo
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- CN101655509A CN101655509A CN200810041917A CN200810041917A CN101655509A CN 101655509 A CN101655509 A CN 101655509A CN 200810041917 A CN200810041917 A CN 200810041917A CN 200810041917 A CN200810041917 A CN 200810041917A CN 101655509 A CN101655509 A CN 101655509A
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Abstract
The invention discloses an overspeed (rotating speed) calibration device, which belongs to the field of measurement. The device comprises a standard gear, a motor driving module of the standard gear,a signal sampling module, a connecting support module, and a signal processing and displaying module. The device is characterized in that: a main control unit of the driving module is connected with two opposite-polar resolving and closed-loop driving control units; the two opposite-polar resolving and closed-loop driving control units are connected with the standard gear; and the motor driving module of the standard gear is a high-voltage alternating current servo driver, and adopts a rotary transformer as a feedback signal. The device realizes the servo control with higher precision and quicker response under the control of a high-speed current servo unit and a speed servo unit, and has the function of external data transmission at the same time. The device can be widely used in the calibration field of overspeed (rotating speed) monitoring protection systems of all kinds of large rotating equipment.
Description
Technical field
The invention belongs to fields of measurement, relate in particular to a kind of calibration equipment that is used for sensor.
Background technology
Rotating speed is one of the most basic in the gen-set, most important parameter; the stop-working protection when fire speed during starting, operating rotating speed adjustment, hypervelocity even the size of load also can obtain from the size of rotating speed embodying, so tachometry is the basis of generator monitoring and protection.
Tachometric survey has following several sensor optional usually: current vortex speed probe, passive magnetoelectricity speed probe, active magnetoelectricity speed probe etc.
Up to now in electric power (fire/hydroelectric power plant); petrochemical industry; metallurgy etc. relate to the industry of large rotating machinery equipment; domestic/outer producer study/was producing dissimilar calibration equipments aspect the verification axle hypervelocity rotary speed system; but these equipment all also do not have the verification of realization to hypervelocity (rotating speed) system (sensor+overspeed protection system/tachometer gage etc.) all the time; and the standard of these equipment itself is poor; rotating speed setting range little (more can't in low/ultralow speed stage verification hypervelocity (rotating speed) system); intelligent data analysis/processing; communication function lacks; verification is loaded down with trivial details; the checking data human factor is big, even qualified hypervelocity (rotating speed) system check can be become defective system.
How solving above-mentioned technical matters, is pendulum urgent problem in face of the science and technology personnel.
Summary of the invention
Technical matters to be solved by this invention provides a kind of hypervelocity (rotating speed) calibration equipment, its rotating speed setting range is big, can be in low/ultralow speed stage verification hypervelocity (rotating speed) system, can carry out intelligent data analysis/processing and data communication, checking procedure is simple and direct, accurate, has prevented the influence of human factor to checking data.
Technical scheme of the present invention is: a kind of hypervelocity (rotating speed) calibration equipment is provided, comprise master gear and motor drive module thereof, signal sampling module, connect support module and signal Processing and display module, it is characterized in that: the main control unit of described driver module is connected with the closed loop driving control unit with the change of revolving of two pairs of utmost points; The change of revolving of two pairs of utmost points is connected with master gear with the closed loop driving control unit; Its motor drive module is the high-voltage alternating servo-driver, and adopts rotary transformer as feedback signal.
The RDC high precision IC that described rotation transformer decoding chip is a DDC company.
Described driver module main control unit is high-speed dsp and/or FPGA circuit module.
Moving in real time/static data processing that described signal Processing and display module adopt DSP to carry out.
Described signal Processing and display module also comprise the data transmission interface module.
Compared with the prior art, advantage of the present invention is: under the control of high speed electric current servo unit and speed servo unit, realize the more servocontrol of high precision, faster response, possessed the outbound data transfer function simultaneously.
Description of drawings
Fig. 1 is a circuit system block diagram of the present invention.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Among Fig. 1, this calibration equipment comprises master gear and motor drive module, signal sampling module, connects support module and signal Processing and display module, its invention improvement is that the main control unit of its driver module is connected with the closed loop driving control unit with the change of revolving of two pairs of utmost points, the change of revolving of its two pairs of utmost points is connected with master gear with the closed loop driving control unit, its motor drive module is the high-voltage alternating servo-driver, and adopts rotary transformer as feedback signal.
Further, its rotation transformer decoding chip RDC high precision IC that is DDC company.
Its driver module main control unit is high-speed dsp and/or FPGA circuit module.
Moving in real time/static data processing that its signal Processing and display module adopt DSP to carry out.
Its signal Processing and display module also comprise the data transmission interface module.
The present invention has filled up blank (the verification scope 1Hz～6KHz of hydroelectric power plant to hypervelocity (rotating speed) system check, be 1r/min～6000r/min), can carry out automatic verification to speed probe, can demarcate the single-point rotary speed system, can check single-point rotating speed warning/protection system, can demarcate three get two rotary speed systems, can intelligence the dynamic amplitude-versus-frequency curve of current vortex/magnetoelectric sensor of drafting, storage, printout Φ 5, Φ 8, Φ 11 specifications; Demonstration/storage standards/by school sensor dynamic vibration waveform, peak-to-peak value, effective value voltage, frequency.
What motor-driven of the present invention adopted is the high-voltage alternating servo-driver, driver adopts rotary transformer as feedback signal, the rotation transformer decoding chip adopts the RDC high precision IC of DDC company, can reach 12BIT, 14BIT, 16BIT, the control accuracy height, velocity accuracy can reach 0.1%, the driver module main control unit adopts high-speed dsp and FPGA to realize, power amplifying part adopts the IPM module of Mitsubishi, under the control of high speed electric current servo unit and speed servo unit, realize more high precision, the servocontrol of faster response, revolving of two pairs of utmost points becomes and closed loop drive controlling (military radar control technology), the range of speeds 1～6000r/min, precision 0.16%.
The data that the examining report of providing according to metrology and measurement center Shanghai Institute of Measurement and Testing Technology of East China country provides, the present invention and similar products at home and abroad compare, and specifically are compared as follows:
This project U.S. Bentlv Japan Germany
Technical indicator
Measured value measured value Shin kwa epro
Measure tachometer value scope (r/min) 1～6,000 5～4,000 5～4,000 5～5000
Minimum speed is provided with resolution (r/min) 1 60 60 60
Toothed disc machining precision (μ m) 5 45 45 45
The present invention can be widely used in the verification field of various large-scale slewings hypervelocity (rotating speed) monitoring and protecting system.
Claims (5)
1. a hypervelocity (rotating speed) calibration equipment comprises master gear and motor drive module thereof, signal sampling module, connects support module and signal Processing and display module, it is characterized in that:
The main control unit of described driver module is connected with the closed loop driving control unit with the change of revolving of two pairs of utmost points;
The change of revolving of two pairs of utmost points is connected with master gear with the closed loop driving control unit;
Its motor drive module is the high-voltage alternating servo-driver, and adopts rotary transformer as feedback signal.
2. according to the described hypervelocity of claim 1 (rotating speed) calibration equipment, it is characterized in that the RDC high precision IC that described rotation transformer decoding chip is a DDC company.
3. according to the described hypervelocity of claim 1 (rotating speed) calibration equipment, it is characterized in that described driver module main control unit is high-speed dsp and/or FPGA circuit module.
4. according to the described hypervelocity of claim 1 (rotating speed) calibration equipment, it is characterized in that described signal Processing and display module adopt DSP to carry out moving in real time/static data processing.
5. according to the described hypervelocity of claim 1 (rotating speed) calibration equipment, it is characterized in that described signal Processing and display module also comprise the data transmission interface module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041917A CN101655509A (en) | 2008-08-21 | 2008-08-21 | Overspeed (rotating speed) calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041917A CN101655509A (en) | 2008-08-21 | 2008-08-21 | Overspeed (rotating speed) calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101655509A true CN101655509A (en) | 2010-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810041917A Pending CN101655509A (en) | 2008-08-21 | 2008-08-21 | Overspeed (rotating speed) calibration device |
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| CN (1) | CN101655509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181333A (en) * | 2014-07-30 | 2014-12-03 | 安徽师范大学 | Self-diagnostic device and method of rotating speed signals |
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2008
- 2008-08-21 CN CN200810041917A patent/CN101655509A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181333A (en) * | 2014-07-30 | 2014-12-03 | 安徽师范大学 | Self-diagnostic device and method of rotating speed signals |
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Open date: 20100224 |