CN205317814U - Speed sensor capability test system - Google Patents
Speed sensor capability test system Download PDFInfo
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- CN205317814U CN205317814U CN201520770114.4U CN201520770114U CN205317814U CN 205317814 U CN205317814 U CN 205317814U CN 201520770114 U CN201520770114 U CN 201520770114U CN 205317814 U CN205317814 U CN 205317814U
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Abstract
The utility model provides a speed sensor capability test system, include: the controller, drive arrangement, phonic wheel, this phonic wheel set up in the phonic wheel case, and the back wall that this phonic wheel case was passed in the phonic wheel pivot meets through the output shaft of shaft coupling with this drive arrangement, the sensor. Clamping device, be used for this sensor of centre gripping in order to fix a position this sensor for this phonic wheel, and signal acquisition and processing device, it carries out the rotational speed analysis in order to gather sensing signal to be coupled to this sensor, wherein, this phonic wheel case and phonic wheel case upper wall that this phonic wheel pivot is parallel are opened to have and are extended and the first trough placed in the middle on the width direction of perpendicular this pivot along this phonic wheel pivot direction, and this phonic wheel case with the phonic wheel case after open on the relative phonic wheel case antetheca of wall and have the second groove of extending through the center of phonic wheel case antetheca, this clamping device is applicable to this sensor of centre gripping and fixes a position with relative this sensor through this the first trough or this phonic wheel incasement portion of this second groove entering.
Description
Technical field
This utility model relates to the measuring technology of speed probe output characteristics test, particularly relates to a kind of speed probe Performance Test System.
Background technology
Aero-engine controls to need speed probe to measure tachometer value. Common speed probe is variable magnetic-resistance type transducer (as shown in Figure 1 a, 1 b). The operation principle of this sensor is when the inswept sensor probe of the phonic wheel convex-concave surface that tests the speed, change the air gap between sensor probe and phonic wheel, cause that in sensor, permanent magnet produces the magnetic resistance change rate in magnetic circuit, ferromagnetic flux in final change sensor, produces sensing AC signal. The frequency of this AC signal is directly proportional to phonic wheel rotating speed.
Assemblage gap etc. between the characteristic of induced signal and the profile of tooth of the phonic wheel that tests the speed, the magnetic induction of sensor and coil parameter, sensor and phonic wheel has relation, and phonic wheel profile of tooth also to input as other structural design with assemblage gap etc. Therefore at the design initial stage, it is necessary to determined the substantially span of above-mentioned parameter by test of knowing the real situation. It is required to install and change the phonic wheel of different size and the speed probe of installation different structure for this testing stand knowing the real situation test, or even as the sensor probe etc. set up, but also to show and to calculate characteristics of signals.
Moment sensor testboard be all at above-mentioned parameter it has been determined that when design, and all can only determine that model sensor test is used for a certain, and quantitative design is based on insufficient grounds, lack above-mentioned a set of speed test platform that can be used to quickly test and do quantitative design condition in test of knowing the real situation.
Utility model content
In order to overcome drawbacks described above, this utility model aims to provide a kind of speed probe Performance Test System.
According to one side of the present utility model, it is provided that a kind of speed probe Performance Test System, including:
Controller, for providing the control instruction including working speed;
Driving device, receives this control instruction to drive phonic wheel to rotate;
Phonic wheel, is arranged in phonic wheel case, and phonic wheel rotating shaft is connected with the output shaft of this driving device through the rear wall of this phonic wheel case by shaft coupling;
Sensor, for producing the induced signal in response to phonic wheel rotating speed;
Clamping device, is used for clamping this sensor this sensor to be positioned relative to this phonic wheel, and
Signal acquisition and processing apparatus, is coupled to this sensor to gather induced signal and carries out rotating speed analysis,
Wherein, the phonic wheel case upper wall with this phonic wheel shaft parallel of this phonic wheel case has and extends along this phonic wheel rotor shaft direction and the first groove placed in the middle on the width of this rotating shaft vertical, and the phonic wheel case antetheca relative with phonic wheel case rear wall of this phonic wheel case has second groove at the center extending past phonic wheel case antetheca, this clamping device is applicable to clamp this sensor and is entered by this first groove or this second groove and position with this sensor relative inside this phonic wheel case.
In one example, this clamping device includes: support arm, this support arm just antetheca to this phonic wheel case, this support arm has at least one telescopic arm stretched out to this phonic wheel case, and this at least one telescopic arm can move up and down along this support arm, this sensor holders is in the front end of this at least one telescopic arm.
In one example, this support arm has two telescopic arms, for when radial direction phonic wheel tooth speed is measured, clamp this sensor and entered inside this phonic wheel case by this first groove, adjust the position of this sensor and the radial teeth of this phonic wheel.
In one example, these two telescopic arms are further applicable to flexible different amount to adjust the probe angle of inclination relative to the radial teeth of this phonic wheel of this sensor.
In one example, the front end of these two telescopic arms have can the dead ring of opening and closing, for clamping this sensor.
In one example, this first groove that this second groove on this phonic wheel case antetheca vertically extends to phonic wheel case upper wall connects.
In one example, this support arm has a telescopic arm, for when end face phonic wheel tooth speed is measured, clamping this sensor and entered inside this phonic wheel case by this second groove being vertically oriented to, adjust the position of this sensor and the end-tooth of this phonic wheel.
In one example, this second groove on this phonic wheel case antetheca is horizontally extending.
In one example, this support arm can at the plane translation being parallel to phonic wheel case antetheca, and this support arm has a telescopic arm, for when end face phonic wheel tooth speed is measured, clamp this sensor to be entered inside this phonic wheel case by this second groove horizontally toward, adjust the position of this sensor and the end-tooth of this phonic wheel.
In one example, this signal acquisition and processing apparatus includes the induced signal acquisition process unit at least three tunnels.
Make it possible to adapt to the geomery of most of aero-engine speed probe according to scheme of the present utility model, sensor clamping device and phonic wheel case, there is significantly high versatility, improve utilization rate of equipment and installations, it is to avoid equipment repeats to build. And, scheme of the present utility model can directly gather, process and show the channelized frequencies signal that speed probe exports, and tachometer value, signal peak and phase-detecting high tooth signal value etc. can be calculated in real time, it is to avoid during test, use the situations such as multiple oscillographs etc. cause reading complicated
Accompanying drawing explanation
After reading the detailed description that embodiment of the disclosure in conjunction with the following drawings, more better understood when features described above of the present utility model and advantage.
Fig. 1 a shows the schematic diagram that radially phonic wheel tooth speed is measured;
Fig. 1 b shows the schematic diagram that end face phonic wheel tooth speed is measured;
Fig. 2 shows the block diagram of the speed probe Performance Test System according to one side of the present utility model;
Fig. 3 a shows the schematic diagram of the phonic wheel case according to one side of the present utility model;
Fig. 3 b shows the schematic diagram of the phonic wheel case according to one side of the present utility model;
Fig. 4 shows when carrying out that radially phonic wheel tooth speed is measured sensor relative to the schematic diagram of the location of phonic wheel;
Fig. 5 shows when carrying out end face phonic wheel tooth speed and measuring sensor relative to the schematic diagram of the location of phonic wheel;
Fig. 6 shows the schematic diagram when carrying out radially phonic wheel tooth speed test of the test system according to one side of the present utility model;
Fig. 7 illustrates top view when radially phonic wheel tooth speed is measured;
Fig. 8 a, 8b show the schematic diagram according to the dead ring on the telescopic arm of embodiment;
Fig. 9 shows the schematic diagram when carrying out the test of end face phonic wheel tooth speed of the test system according to one side of the present utility model; And
Figure 10 shows the top view when carrying out the test of end face phonic wheel tooth speed of the test system according to one side of the present utility model.
For clarity sake, the brief description of accompanying drawing labelling given below:
100,600,900,1000: speed probe Performance Test System
110: controller
120: driving device
130,430,530,630,930,1030: phonic wheel case
131a, 131b, 431,631: the first groove
132a, 132b, 532,932a, 1032b: the second groove
140,440,540,640,940,1040: phonic wheel
150,450,550,650,950,1050: sensor
160: clamping device
170: signal acquisition and processing apparatus
611,911,1011: support arm
612a, 612b, 912,1012: telescopic arm
6121: dead ring
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail. Noting, the aspects described below in conjunction with the drawings and specific embodiments is merely illustrative of, and is understood not to protection domain of the present utility model is carried out any restriction.
Phonic wheel tachometric survey is divided into two kinds, is that radially phonic wheel tooth speed is measured and the measurement of end face phonic wheel tooth speed respectively. Fig. 1 a illustrates that radially phonic wheel tooth speed is measured, under this kind of metering system, the sagittal plane of phonic wheel there is gear, form convex-concave surface, during phonic wheel convex-concave surface is inswept sensor probe, change the air gap between sensor probe and phonic wheel, cause that in sensor, permanent magnet produces the magnetic resistance change rate in magnetic circuit, ferromagnetic flux in final change sensor, produces sensing AC signal.
Fig. 1 b illustrates that end face phonic wheel tooth speed is measured, under this kind of metering system, the end face of phonic wheel there is gear, form convex-concave surface, during phonic wheel convex-concave surface is inswept sensor probe, change the air gap between sensor probe and phonic wheel, cause that in sensor, permanent magnet produces the magnetic resistance change rate in magnetic circuit, ferromagnetic flux in final change sensor, produces sensing AC signal.
Phonic wheel is generally placed in phonic wheel case, measures type to adapt to above two, it is necessary to different phonic wheels, correspondingly needs different phonic wheel casees. If it is possible to there is a kind of rotary speed test system, it is possible to can the measurement of rotating speed of speed probe of clamping difformity size and measuring method, it will be very favorable.
Fig. 2 shows the block diagram of the speed probe Performance Test System 200 according to one side of the present utility model.
As in figure 2 it is shown, system 200 can include controller 110, driving device 120, phonic wheel case 130, the phonic wheel 140 being arranged in phonic wheel case 130, sensor 150, for clamping clamping device 160 and the signal acquisition and processing apparatus 170 of sensor 150.
Controller 110 is for providing the control instruction including working speed. Control instruction may also include running time etc. Driving device 120 can receive this control instruction to drive the phonic wheel in downstream to rotate. Driving device 120 can include drive motor and communication module etc. Controller 110 according to control instruction operated motor, can not only can obtain the control instruction operated motor in operation room and tachometer value of testing oneself in motor in real time simultaneously.
Driving device 120 main body is motor and protection shell, adopts mains-supplied, and control instruction is sent by controller 110. Motor control accuracy should meet related request, and working speed should be not less than 30000rpm. The outfan of driving device 120 should with an output shaft, with drive test the speed phonic wheel operating. This output shaft end with shaft coupling, should be connected with the rotation axle with the phonic wheel 140 that tests the speed.
Phonic wheel 140 is arranged in phonic wheel case 130, and the phonic wheel rotating shaft of phonic wheel 130 is connected through the rear wall of phonic wheel case 130 by the motor output shaft of shaft coupling with driving device 120, with by motor-driven rotation.
The volume of phonic wheel case 130 should have certain autgmentability, can install various sizes of phonic wheel, and can wrap phonic wheel when phonic wheel 140 flies out disengaging in intensity. The effect of phonic wheel case 130 surface groove (as mentioned below) is to install various sizes of phonic wheel in order to convenient.
Clamping device 160 can clamp sensor 150 to enter in phonic wheel case 130 near phonic wheel 140, to obtain induced signal, and is acquired by follow-up signal acquisition and processing apparatus 170 and is processed. The probe of sensor 130 has been fixed also by clamping device 160 and this phonic wheel 140 constitutes installment state. Phonic wheel rotates and causes sensor magnetic resistance change rate, produces sensing AC signal. This signal is caught by signal acquisition and processing apparatus 170 and is shown, simultaneously can according to the signal calculated characteristic automatically such as phonic wheel parameter, such as virtual value, peak value, peak-to-peak value, frequency, phase-detecting height tooth peak value etc., and contrasting with motor self index that tests the speed. Signal waveform can fix analysis, it is possible to prints, it is also possible to the main control computer preserving and being sent in operation room by communication completes above-mentioned work.
In one example, signal acquisition and processing apparatus 170 at least should can measure 3 road a-c cycle signals, it may for example comprise no less than the signal acquisition process unit on 3 tunnels, it is possible to be directly connected to the bare wire of sensor. This device can frequency acquisition signal being shown in real time on screen. Can be analyzed frequency signal processing simultaneously, obtain monolateral peak value and the peak-to-peak value of the virtual value of signal, monolateral peak value and peak-to-peak value and phase-detecting height tooth signal. Finally this harvester can not only in self real-time display frequency signal waveform, moreover it is possible to sends to upper monitoring computer with the archetype signal that higher acquisition rate collects by communication bus, and shows in real time on host computer.
Fig. 3 a shows the schematic diagram of the phonic wheel case 130a according to one side of the present utility model.
As shown in Figure 3 a, the phonic wheel case upper wall with phonic wheel shaft parallel of phonic wheel case 130a has the first groove 131a, and this first groove 131a extends along phonic wheel rotor shaft direction, and placed in the middle on the width of vertical rotation axis. Meanwhile, the phonic wheel case antetheca relative with phonic wheel case rear wall (namely near the wall of reader) of phonic wheel case 130a has the second groove 132a at the center extending past phonic wheel case antetheca. Specifically, the first groove 131a that this second groove 132a vertically extends to phonic wheel case upper wall connects.
First groove 131a can be used for radially phonic wheel tooth speed and measures, i.e. clamping device 160 can be clamped sensor 150 and be positioned with the sagittal plane of relative sensors 150 inside the upper wall entrance phonic wheel case 130a of phonic wheel case 130a by the first groove 131a.
Fig. 4 shows when carrying out that radially phonic wheel tooth speed is measured sensor 450 relative to the schematic diagram of the location of phonic wheel 440.
Second groove 132a can be used for end face phonic wheel tooth speed and measures, i.e. clamping device 160 can be clamped sensor 150 and be positioned with the end face of relative sensors 150 inside the antetheca entrance phonic wheel case 130a of phonic wheel case 130a by the second groove 132a.
Fig. 5 shows when carrying out end face phonic wheel tooth speed and measuring sensor 550 relative to the schematic diagram of the location of phonic wheel 540.
By the mode of fluting on phonic wheel case 130a so that phonic wheel case 130a is applicable to various sizes of phonic wheel 140. After changing phonic wheel 140, it is possible to by clamping device 160 along groove (131a, 132a) movable sensor 150, to carry out sensor 150 reorientating relative to phonic wheel 160, thus carrying out normal signal sensing.
Fig. 3 b shows the schematic diagram of the phonic wheel case 130b according to one side of the present utility model.
As shown in Figure 3 b, the phonic wheel case upper wall with phonic wheel shaft parallel of phonic wheel case 130b has the first groove 131b, and this first groove 131b extends along phonic wheel rotor shaft direction, and placed in the middle on the width of vertical rotation axis. Meanwhile, the phonic wheel case antetheca relative with phonic wheel case rear wall (namely near the wall of reader) of phonic wheel case 130b has the second groove 132b at the center extending past phonic wheel case antetheca. Specifically, this second groove 132b is horizontally extending.
First groove 131b can be used for radially phonic wheel tooth speed and measures, i.e. clamping device 160 can be clamped sensor 150 and be positioned with the sagittal plane of relative sensors 150 inside the upper wall entrance phonic wheel case 130b of phonic wheel case 130b by the first groove 131b.
Fig. 4 shows when carrying out that radially phonic wheel tooth speed is measured sensor 450 relative to the schematic diagram of the location of phonic wheel 440.
Second groove 132b can be used for end face phonic wheel tooth speed and measures, i.e. clamping device 160 can be clamped sensor 150 and be positioned with the end face of relative sensors 150 inside the antetheca entrance phonic wheel case 130b of phonic wheel case 130b by the second groove 132b.
Fig. 5 shows when carrying out end face phonic wheel tooth speed and measuring sensor 550 relative to the schematic diagram of the location of phonic wheel 540.
By the mode of fluting on phonic wheel case 130b so that phonic wheel case 130b is applicable to various sizes of phonic wheel 140. After changing phonic wheel 140, it is possible to by clamping device 160 along groove (131b, 132b) movable sensor 150, to carry out sensor 150 reorientating relative to phonic wheel 160, thus carrying out normal signal sensing.
The size of groove should be more bigger than nominal sensor probe size, leaves design margin, probe can be allowed to be deep into inside case by groove, and meet installation requirement between phonic wheel.
In order to movable sensor 150 makes sensor 150 be accurately positioned relative to phonic wheel 140, clamping device 160 is responsible for clamping sensor 150 to position relative to phonic wheel 140, specifically, clamping device 160 can clamp inside the groove entrance phonic wheel case that sensor 150 passes through to open on phonic wheel case 130 to position relative to sensor 150.
Fig. 6 shows the schematic diagram when carrying out radially phonic wheel tooth speed test of the test system 600 according to one side of the present utility model.
As shown in Figure 6, clamping device can include support arm 611, support arm 611 just antetheca to phonic wheel case 630. Support arm 611 is provided with two telescopic arms 612a, 612b (being referred to as telescopic arm 612) of stretching out to phonic wheel case 630. Sensor 650 is clamped in the front end of telescopic arm 612a, 612b.
Telescopic arm 612a, 612b can move up and down along support arm on support arm 611, it addition, telescopic arm 612a, 612b also can just stretch on the direction of phonic wheel case 630 in each leisure. Enter in case through the upper wall of phonic wheel case 630 via the first groove 631 thus, it is possible to control sensor 650, and position relative to the position of the radial teeth of phonic wheel 640.
Especially, the collapsing length of telescopic arm 612a, 612b can be different here, so that sensor 650 presents certain angle of inclination relative to radial teeth. This is often to occur that measuring probe and phonic wheel card are not parallel in measuring due to electromotor radial teeth, but there is inclination angle, thus can affect the characteristic of sensor output signal, it is therefore desirable to can adjust the inclination angle of sensor.
In practice, every support arm is broadly divided into two sections, and outer section is relatively thick, end equipped with sensor dead ring, two sections be connected to locking device. All having position correspondence markings on the outer arm of two support arms, upper arm (that is, support arm 612a) surface can angled be worth, and two-arm can move along fixing vertical support frame simultaneously, and support has size scale. When mounted, first the correspondence markings in two-arm being directed at, and sensor probe is fixed on end, so acquiescence sensor is vertically downward. Two-arm is moved along vertical support frame, it is possible to adjust the sensor probe spacing to phonic wheel. Meanwhile, moving left and right upper arm and can adjust the angle of inclination of sensor probe, its angle can be passed through to read corresponding to the upper arm angle value of underarm labelling.
Fig. 7 illustrates top view when radially phonic wheel tooth speed is measured. As it is shown in fig. 7, stretching by telescopic arm 612, it is possible to control sensor 650 mobile in the first groove 631. It addition, telescopic arm 612 moves up and down the probe that can control sensor 650 at a distance of the distance of radial teeth of phonic wheel along support arm 611.
Fig. 8 a, 8b show the schematic diagram of the dead ring 6121 of the telescopic arm 612 according to specific embodiment. As shown in Fig. 8 a, 8b, the opening and closing of dead ring 6121 can clamp and decontrol sensor 650.
Fig. 9 shows the schematic diagram when carrying out the test of end face phonic wheel tooth speed of the test system 900 according to one side of the present utility model. In this example, the first groove 931a extends in vertical direction, corresponding to the situation of Fig. 3 a.
As it is shown in figure 9, clamping device can include support arm 911, support arm 911 just antetheca to phonic wheel case 930. Support arm 911 is provided with the telescopic arm 912 stretched out to phonic wheel case 930. Sensor 950 is clamped in the front end of telescopic arm 912.
Telescopic arm 912 can move up and down along support arm on support arm 911, it addition, telescopic arm 912 also can just stretch on the direction of phonic wheel case 930 in each leisure. Enter in case through the antetheca of phonic wheel case 930 via the second groove 932a thus, it is possible to control sensor 950, and position relative to the position of the end-tooth of phonic wheel 940.
Figure 10 shows the top view when carrying out the test of end face phonic wheel tooth speed of the test system 1000 according to one side of the present utility model. In this example, the first groove 1032b extends in the horizontal direction, corresponding to the situation of Fig. 3 b.
As shown in Figure 10, clamping device can include support arm 1011, support arm 1011 just antetheca to phonic wheel case 1030. Support arm 1011 is provided with the telescopic arm 1012 stretched out to phonic wheel case 1030. Sensor 1050 is clamped in the front end of telescopic arm 1012.
Support arm 1011 can translate in the plane being parallel to phonic wheel case antetheca, for instance right and left translates up in the drawings, it addition, telescopic arm 1012 also can just to flexible on the direction of phonic wheel case 1030. Enter in case through the antetheca of phonic wheel case 1030 via the second groove 1032b thus, it is possible to control sensor 1050, and position relative to the position of the end-tooth of phonic wheel 1040.
Make it possible to adapt to the geomery of most of aero-engine speed probe according to scheme of the present utility model, sensor clamping device and phonic wheel case, there is significantly high versatility, improve utilization rate of equipment and installations, it is to avoid equipment repeats to build. And, scheme of the present utility model can directly gather, process and show the channelized frequencies signal that speed probe exports, and tachometer value, signal peak and phase-detecting high tooth signal value etc. can be calculated in real time, it is to avoid during test, use the situations such as multiple oscillographs etc. cause reading complicated.
Description before offer is to make any technical staff in this area all can put into practice various aspect described herein. However, it should be understood that protection domain of the present utility model should be as the criterion with claims, and should not be limited to concrete structure and the assembly of above explained orally embodiment. Those skilled in the art are in spirit and scope of the present utility model, it is possible to each embodiment carries out various variation and amendment, and these variations and amendment also drop within protection domain of the present utility model.
Claims (10)
1. a speed probe Performance Test System, it is characterised in that including:
Controller, for providing the control instruction including working speed;
Driving device, receives described control instruction to drive phonic wheel to rotate;
Phonic wheel, is arranged in phonic wheel case, and phonic wheel rotating shaft is connected through the rear wall of described phonic wheel case by the output shaft of shaft coupling with described driving device;
Sensor, for producing the induced signal in response to phonic wheel rotating speed;
Clamping device, is used for clamping described sensor described sensor to be positioned relative to described phonic wheel, and
Signal acquisition and processing apparatus, is coupled to described sensor to gather induced signal and carries out rotating speed analysis,
Wherein, the phonic wheel case upper wall with described phonic wheel shaft parallel of described phonic wheel case has and extends along described phonic wheel rotor shaft direction and the first groove placed in the middle on the width of vertical described rotating shaft, and the phonic wheel case antetheca relative with phonic wheel case rear wall of described phonic wheel case has second groove at the center extending past phonic wheel case antetheca, described clamping device is applicable to clamp described sensor by positioning with relatively described sensor inside described first groove or the described second groove described phonic wheel case of entrance.
2. speed probe Performance Test System as claimed in claim 1, it is characterised in that described clamping device includes:
Support arm, described support arm just antetheca to described phonic wheel case, having at least one telescopic arm stretched out to described phonic wheel case on described support arm, and at least one telescopic arm described can move up and down along described support arm, described sensor holders is in the front end of at least one telescopic arm described.
3. speed probe Performance Test System as claimed in claim 2, it is characterized in that, described support arm has two telescopic arms, for when radial direction phonic wheel tooth speed is measured, clamp described sensor to be entered inside described phonic wheel case by described first groove, adjust the position of described sensor and the radial teeth of described phonic wheel.
4. speed probe Performance Test System as claimed in claim 3, it is characterised in that said two telescopic arm is further applicable to flexible different amount to adjust the probe angle of inclination relative to the radial teeth of described phonic wheel of described sensor.
5. speed probe Performance Test System as claimed in claim 3, it is characterised in that the front end of said two telescopic arm have can the dead ring of opening and closing, for clamping described sensor.
6. speed probe Performance Test System as claimed in claim 2, it is characterised in that described first groove that described second groove on described phonic wheel case antetheca vertically extends to phonic wheel case upper wall connects.
7. speed probe Performance Test System as claimed in claim 6, it is characterized in that, described support arm has a telescopic arm, for when end face phonic wheel tooth speed is measured, clamp described sensor to be entered inside described phonic wheel case by described second groove being vertically oriented to, adjust the position of described sensor and the end-tooth of described phonic wheel.
8. speed probe Performance Test System as claimed in claim 2, it is characterised in that described second groove on described phonic wheel case antetheca is horizontally extending.
9. speed probe Performance Test System as claimed in claim 8, it is characterized in that, described support arm can at the plane translation being parallel to phonic wheel case antetheca, and described support arm has a telescopic arm, for when end face phonic wheel tooth speed is measured, clamp described sensor to be entered inside described phonic wheel case by described second groove horizontally toward, adjust the position of described sensor and the end-tooth of described phonic wheel.
10. speed probe Performance Test System as claimed in claim 1, it is characterised in that described signal acquisition and processing apparatus includes the induced signal acquisition process unit at least three tunnels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770114.4U CN205317814U (en) | 2015-09-30 | 2015-09-30 | Speed sensor capability test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770114.4U CN205317814U (en) | 2015-09-30 | 2015-09-30 | Speed sensor capability test system |
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| CN205317814U true CN205317814U (en) | 2016-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375686A (en) * | 2018-04-10 | 2018-08-07 | 中国大唐集团科学技术研究院有限公司华中分公司 | Device for wind power generating set overspeed protection test |
-
2015
- 2015-09-30 CN CN201520770114.4U patent/CN205317814U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375686A (en) * | 2018-04-10 | 2018-08-07 | 中国大唐集团科学技术研究院有限公司华中分公司 | Device for wind power generating set overspeed protection test |
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| C14 | Grant of patent or utility model | ||
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Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee after: China Hangfa commercial aviation engine limited liability company Address before: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee before: AVIC Commercial Aircraft Engine Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |