CN108267611A - A kind of revolution speed of propeller acquisition method - Google Patents
A kind of revolution speed of propeller acquisition method Download PDFInfo
- Publication number
- CN108267611A CN108267611A CN201711359908.1A CN201711359908A CN108267611A CN 108267611 A CN108267611 A CN 108267611A CN 201711359908 A CN201711359908 A CN 201711359908A CN 108267611 A CN108267611 A CN 108267611A
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- China
- Prior art keywords
- propeller
- speed
- sensing device
- rotating speed
- probe
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention belongs to propeller adjusting control technical fields, are related to a kind of revolution speed of propeller acquisition method.The present invention on propeller by being equipped with the sensing device to match with speed probe, the rotating speed of sensing device rotated together with propeller using the speed probe acquisition of installation on the engine, by the signal for extracting speed probe, you can calculate the rotating speed of propeller.Simple structure of the present invention, efficiently, realizes the purpose of directly acquisition revolution speed of propeller, the adjusting control for follow-up propeller provides technical foundation.
Description
Technical field
The invention belongs to propeller adjusting control technical fields, are related to a kind of revolution speed of propeller acquisition method.
Background technology
At present the country variable-pitch propeller, typically using etc. rotational speed regulations, using etc. rotational speed regulations the advantages of be only to need
Control this unitary variant of rotating speed, it will be able to realize that the power of propeller absorption and the power of engine paddle shaft output balance each other.
Therefore, the measurement of revolution speed of propeller is just particularly important, though when front propeller control using etc. rotational speed regulations, it is only
It is the rotating speed that engine is experienced by the mechanism of governor weight, a certain fixation is limited in by the pressure rotating speed of adjustment spring
Rotating speed, there is no the rotating speeds of really acquisition propeller.Therefore the rotating speed control accuracy for promotion propeller improves propeller control
Quality and electronic control mode is turned to by Mechanical course for propeller, need to acquire revolution speed of propeller, to realize propeller
The closed-loop control of rotating speed, but current test revolution speed of propeller is carried out by acquiring the rotating speed of a certain gear of engine retarder
Conversion is got, due to having back lash between engine retarder gear, it is impossible to the actual conditions of true reflection propeller, because
This directly acquisition revolution speed of propeller is particularly important.
Invention content
The purpose of the present invention is：It solves the problems, such as that revolution speed of propeller can not be tested in existing propeller, providing one kind can be with
The method of acquisition revolution speed of propeller in real time, this method is simple in structure, and reliability is high, can directly acquire the rotating speed of propeller.
Technical scheme of the present invention：A kind of revolution speed of propeller acquisition method, which is characterized in that be equipped on propeller with turning
The sensing device that fast sensor matches is rotated using the speed probe acquisition of installation on the engine together with propeller
The rotating speed of sensing device, by the signal for extracting speed probe, you can calculate the rotating speed of propeller.
It is described calculate propeller rotating speed be：When propeller rotates, sensing device is rotated with propeller, mounted on hair
When speed probe in motivation experiences sensing device, sensor sends out a beam pulse, and when propeller rotates, each circle has more
A pulse Z, the burst length f to be turned around by measuring propeller rotation, according to formula 1, can calculate the rotating speed of propeller.
N=60f/Z ... ... ... ... ... ... (1)
In formula：Z is number of gear teeth；N is gear rotational speed r/min；F is induced electromotive force frequency Hz.
The sensing device is magnetic screw, is connected through a screw thread and is fastened on propeller 1.
Advantageous effect of the present invention：The present invention devises a kind of simple, efficient device, realizes directly acquisition propeller and turns
The purpose of speed, the adjusting control for follow-up propeller provide technical foundation.
Description of the drawings
Fig. 1 is the principle of the present invention schematic diagram,
Wherein：1st, propeller 2,3 speed probe of sensing device, 4 cable, 5 sensor probe
Specific embodiment：
The present invention is further described below in conjunction with the accompanying drawings：
As shown in Figure 1, the sensing device 2 to match with speed probe 3 is installed on the propeller 1 of the present invention, profit
The rotating speed of sensing device 2 rotated together with propeller 1 with the speed probe acquisition 3 of installation on the engine, passes through extraction
The signal of speed probe 3, you can calculate the rotating speed of propeller.
It is described calculate propeller rotating speed be：When propeller 1 rotates, sensing device 2 is rotated with propeller 1, installation
When speed probe 3 on the engine experiences sensing device 2, speed probe 3 sends out a beam pulse, and propeller 1 rotates
When, each circle has multiple pulse Z, and the burst length f to be turned around by measuring propeller rotation according to formula 1, can calculate spiral shell
Revolve the rotating speed of paddle.
N=60f/Z ... ... ... ... ... ... (1)
In formula：Z is number of gear teeth；N is gear rotational speed r/min；F is induced electromotive force frequency Hz.
Sensing device 2 is magnetic screw, is connected through a screw thread and is fastened on propeller 1.
In the operation principle of the present invention：
Sensing device 2 is mounted on propeller 1, speed probe 3 is installed on the engine, adjusts sensor spy
First 5 with the gap of sensing device 2, terminate oscillograph or controller for adjusting revolution speed of propeller in cable 4.Propeller starts
During work, the gap period of sensor probe 5 and sensing device 2 (magnetic screw is connected through a screw thread and is fastened on propeller 1)
Property variation, the frequency of speed probe output signal is collected by computing oscilloscope or controller, further according to formula 1
Calculate the rotating speed of propeller.
Rotation-speed measuring device has speed probe of the sensing device 2 mounted on propeller with installation on the engine respectively
3 compositions, for acquiring the rotating speed of propeller.
Claims (3)
1. a kind of revolution speed of propeller acquisition method, which is characterized in that be equipped on propeller (1) and speed probe (3) phase
The sensing device (2) matched, the sense rotated together with propeller (1) using speed probe (3) acquisition of installation on the engine
The rotating speed of device (2) is answered, by the signal for extracting speed probe (3), you can calculate the rotating speed of propeller (1).
2. revolution speed of propeller acquisition method as described in claim 1, which is characterized in that it is described calculate propeller rotating speed be：
When propeller rotates, sensing device (2) is rotated with propeller (1), installs speed probe (3) impression on the engine
During to sensing device (2), speed probe (3) sends out a beam pulse, and when propeller rotates, each circle has multiple pulse Z, passes through
The burst length f that propeller rotation is turned around is measured, according to formula 1, the rotating speed of propeller can be calculated.
N=60f/Z ... ... ... ... ... ... (1)
In formula：Z is number of gear teeth；N is gear rotational speed r/min；F is induced electromotive force frequency Hz.
3. revolution speed of propeller acquisition method as claimed in claim 1 or 2, which is characterized in that the sensing device (2) is magnetism
Screw is connected through a screw thread and is fastened on propeller (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711359908.1A CN108267611A (en) | 2017-12-15 | 2017-12-15 | A kind of revolution speed of propeller acquisition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711359908.1A CN108267611A (en) | 2017-12-15 | 2017-12-15 | A kind of revolution speed of propeller acquisition method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108267611A true CN108267611A (en) | 2018-07-10 |
Family
ID=62772208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711359908.1A Pending CN108267611A (en) | 2017-12-15 | 2017-12-15 | A kind of revolution speed of propeller acquisition method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108267611A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113630554A (en) * | 2021-08-12 | 2021-11-09 | 北京航空航天大学 | Image acquisition device, method and system based on blade rotation angle |
-
2017
- 2017-12-15 CN CN201711359908.1A patent/CN108267611A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113630554A (en) * | 2021-08-12 | 2021-11-09 | 北京航空航天大学 | Image acquisition device, method and system based on blade rotation angle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180710 |
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| RJ01 | Rejection of invention patent application after publication |