CN105298992A - Dynamic property testing system for high-speed switch valve based on digital variable pump pilot regulation and method thereof - Google Patents
Dynamic property testing system for high-speed switch valve based on digital variable pump pilot regulation and method thereof Download PDFInfo
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- CN105298992A CN105298992A CN201510843532.6A CN201510843532A CN105298992A CN 105298992 A CN105298992 A CN 105298992A CN 201510843532 A CN201510843532 A CN 201510843532A CN 105298992 A CN105298992 A CN 105298992A
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Abstract
The invention discloses a dynamic property testing system for a high-speed switch valve based on digital variable pump pilot regulation and a method thereof. The oil outlet of a digital variable pump is connected with a pressure sensor, and a flow sensor is installed on an inclined plate of the digital variable pump; the high-speed switch valve is installed on a high-speed switch valve installation valve block, and the high-speed switch valve installation valve block is installed at the installation position of a pilot valve of an end cover of the digital variable pump; the control signal input end of the high-speed switch valve is connected with a high-speed switch valve controller, the signal output end of the high-speed switch valve controller is connected with a testing system controller, and the signal output end of the flow sensor and the signal output end of the pressure sensor are connected to the testing system controller.
Description
Technical field
The present invention relates to hydraulic element detection technique, especially design a kind of high-speed switch valve dynamical property test system based on numerical variable pump guide adjustment and method thereof.
Background technique
High-speed switch valve has the advantage that structure is simple, action is fast, contamination resistance is strong, reliability is high, processing cost is low, in industrial control and national defence weapon guidance, have good application prospect.As typical digital hydraulic component, its working state is only opened and is closed two kinds, as the directly actuated valve of a kind of digital signal, therefore it does not need to use D/A translation interface just Computer Control Technology and hydraulic system can be combined with each other, under the overall background that Computer Control Technology and embedded Control technology are permeated to every field, there is exclusive advantage in interface aspect.
Britain abroad as far back as eighties of last century end of the seventies is studied high-speed switch valve accordingly with regard to starting, and develops the electromagnetic switch valve that Colenoid valve and these two kinds, Helenoid valve have special construction.China is domestic until eighties of last century just starts the research of high-speed switch valve the eighties, and the response time of how to improve high-speed switch valve at present remains a large difficult point of high-speed switch valve research.
Due to the actuating length of high-speed switch valve and actuation time all very short, its measurement carrying out dynamic characteristic is seemed particularly difficulty.Be commonly used to the measuring technology measuring traditional all kinds of hydrovalve element, the measurement for high-speed switch valve frequency response is inapplicable, therefore a kind of novel reliable high-speed switch valve Frequency Response Test Method of exploitation seems particularly important.Mainly can be divided into two kinds to the measurement of speed-sensitive switch response valve at present, a kind of is measure its frequency response for the high-speed electro-magnet controlling spool, another kind of then be the frequency response by detecting the stressed catastrophe of spool and then indirect inspection high-speed switch valve.
Summary of the invention
The object of the present invention is to provide a kind of high-speed switch valve dynamic characteristic test method regulated based on numerical variable pump guide, by detecting the change of numerical variable pump discharge place pressure, flow, and then can indirectly measure the actual frequency response of high-speed switch valve in pressure oil circuit.
For achieving the above object, the technical solution used in the present invention is as follows:
The high-speed switch valve dynamical property test system regulated based on numerical variable pump guide comprises Speed On-off Valve device, numerical variable pump, high-speed switch valve, high-speed switch valve installation valve block, flow transducer, pressure transducer, Test System Controller, numerical variable pump swash plate;
The oil outlet place Bonding pressure sensor of numerical variable pump, flow transducer is arranged on numerical variable pump swash plate; High-speed switch valve is arranged on high-speed switch valve and installs on valve block, and high-speed switch valve installs the pilot valve installation place that valve block is arranged on numerical variable pump end cap; The control signal input end of high-speed switch valve connects Speed On-off Valve device, the signal output part connecting test SC system controller of Speed On-off Valve device, flow transducer and pressure sensor signal output terminal connecting test SC system controller.
Described Test System Controller is programmable controller.
Described high-speed switch valve installs valve block with reduction valve mounting hole.
Described Test System Controller comprises data acquisition module.
The test method of described test system is:
By the delivery pressure value of Test System Controller setting numerical variable pump, determine the initial measurement frequency f 1 of Speed On-off Valve signal simultaneously, by changing the input pwm signal dutycycle of high-speed switch valve, regulate numerical variable delivery side of pump pressure to produce a step, record this test figures variable displacement pump outlet pressure, flux signal becomes stable state response time t1 used;
The frequency changing Speed On-off Valve signal is f2, again by changing the input pwm signal dutycycle of high-speed switch valve, regulate numerical variable delivery side of pump pressure to produce a step, record this test figures variable displacement pump outlet pressure, flux signal becomes stable state response time t2 used;
The frequency of continuous adjustment high-speed switch valve input signal, until the response time that numerical variable pump discharge pressure, flux signal become stable state used no longer changes, so now the frequency of high-speed switch valve input signal is its actual operating frequency.
The beneficial effect that the present invention has is:
1, can record under system pressure effect, the actual frequency response of high-speed switch valve.
2, high-speed switch valve is inserted in high-speed switch valve installation valve block, and under the effect of fluid, the spool being conducive to protective switch valve is not worn, and is conducive to the heat radiation of high-speed electro-magnet simultaneously.
3, pressure transducer and flow transducer can the output characteristics of Real-time Feedback variable displacement pump, the working state of tracking high-speed switch valve that can be real-time.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the high-speed switch valve dynamic characteristic test method based on numerical variable pump guide adjustment.
Fig. 2 is the flow diagram of the high-speed switch valve dynamic characteristic test method based on numerical variable pump guide adjustment.
In figure: 1, Speed On-off Valve device, 2, numerical variable pump, 3, high-speed switch valve, 4, high-speed switch valve installs valve block, 5, flow transducer, 6, pressure transducer, 7, Test System Controller, 8, numerical variable pump swash plate.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the invention will be further described, and the present embodiment should not regard limitation of the invention as.
As shown in Figure 1, Speed On-off Valve device 1, numerical variable pump 2, high-speed switch valve 3, high-speed switch valve installation valve block 4, flow transducer 5, pressure transducer 6, Test System Controller 7, numerical variable pump swash plate 8 is comprised; System interconnected relationship is as follows: the oil outlet place Bonding pressure sensor 6 of numerical variable pump 2, and flow transducer 5 is arranged on numerical variable pump swash plate 8; High-speed switch valve 3 is arranged on high-speed switch valve and installs on valve block 4, and high-speed switch valve installs the pilot valve installation place that valve block 4 is arranged on numerical variable pump 2 end cap; The control signal input end of high-speed switch valve 3 connects Speed On-off Valve device 1, the signal output part connecting test SC system controller 7 of Speed On-off Valve device 1, flow transducer 5 and pressure transducer 6 signal output part connecting test SC system controller 7; The pressure that the numerical variable pump 2 that wherein pressure transducer 6 and flow transducer 5 gather exports, the data of flow are passed to Test System Controller 7 by real-time collection.
Described Test System Controller 7 is programmable controller.Described high-speed switch valve installs valve block 4 with reduction valve mounting hole.Described Test System Controller 7 comprises data acquisition module.
As shown in Figure 2, in experimentation, first the delivery pressure value setting numerical variable pump 2 by Test System Controller 7 determines the initial measurement frequency f 1 of high-speed switch valve 3 control signal simultaneously, by changing the input pwm signal dutycycle of high-speed switch valve 3, regulate the outlet pressure of numerical variable pump 2 to produce an obvious step, record this test figures variable displacement pump 2 outlet pressure, flux signal becomes stable state response time t1 used.The frequency changing high-speed switch valve 3 control signal is f2, again by changing the input pwm signal dutycycle of high-speed switch valve 3, regulate the outlet pressure of numerical variable pump 2 to produce an obvious step, record this test figures variable displacement pump 2 outlet pressure, flux signal becomes stable state response time t2 used.The frequency of continuous adjustment high-speed switch valve 3 input signal, until numerical variable pump 2 outlet pressure, flux signal become the stable state response time used when no longer changing, so now the frequency of high-speed switch valve input signal is its actual operating frequency.
Claims (5)
1. based on the high-speed switch valve dynamical property test system that numerical variable pump guide regulates, it is characterized in that: comprise Speed On-off Valve device (1), numerical variable pump (2), high-speed switch valve (3), high-speed switch valve installation valve block (4), flow transducer (5), pressure transducer (6), Test System Controller (7), numerical variable pump swash plate (8);
Oil outlet place Bonding pressure sensor (6) of numerical variable pump (2), flow transducer (5) is arranged on numerical variable pump swash plate (8); High-speed switch valve (3) is arranged on high-speed switch valve and installs on valve block (4), and high-speed switch valve installs the pilot valve installation place that valve block (4) is arranged on numerical variable pump (2) end cap; The control signal input end of high-speed switch valve (3) connects Speed On-off Valve device (1), the signal output part connecting test SC system controller (7) of Speed On-off Valve device (1), flow transducer (5) and pressure transducer (6) signal output part connecting test SC system controller (7).
2. a kind of high-speed switch valve dynamical property test system regulated based on numerical variable pump guide according to claim 1, is characterized in that: described Test System Controller (7) is programmable controller.
3. a kind of high-speed switch valve dynamical property test system regulated based on numerical variable pump guide according to claim 1, is characterized in that: described high-speed switch valve installs valve block (4) with reduction valve mounting hole.
4. a kind of high-speed switch valve dynamical property test system regulated based on numerical variable pump guide according to claim 1, is characterized in that: described Test System Controller (7) comprises data acquisition module.
5. a test method for test system as claimed in claim 1, is characterized in that:
By the delivery pressure value of Test System Controller (7) setting numerical variable pump (2), determine the initial measurement frequency f 1 of high-speed switch valve (3) control signal simultaneously, by changing the input pwm signal dutycycle of high-speed switch valve (3), regulate the outlet pressure of numerical variable pump (2) to produce a step, record this test figures variable displacement pump (2) outlet pressure, flux signal becomes stable state response time t1 used;
The frequency changing high-speed switch valve (3) control signal is f2, again by changing the input pwm signal dutycycle of high-speed switch valve (3), regulate the outlet pressure of numerical variable pump (2) to produce a step, record this test figures variable displacement pump (2) outlet pressure, flux signal becomes stable state response time t2 used;
The frequency of continuous adjustment high-speed switch valve (3) input signal, until the response time that numerical variable pump (2) outlet pressure, flux signal become stable state used no longer changes, so now the frequency of high-speed switch valve input signal is its actual operating frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843532.6A CN105298992B (en) | 2015-11-26 | 2015-11-26 | Dynamic property testing system for high-speed switch valve based on digital variable pump pilot regulation and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510843532.6A CN105298992B (en) | 2015-11-26 | 2015-11-26 | Dynamic property testing system for high-speed switch valve based on digital variable pump pilot regulation and method thereof |
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| CN105298992A true CN105298992A (en) | 2016-02-03 |
| CN105298992B CN105298992B (en) | 2017-03-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824916A (en) * | 2019-10-08 | 2020-02-21 | 南京航空航天大学 | Self-adaptive PWM control method for soft landing of electromagnetic high-speed switch valve |
| CN112160951A (en) * | 2020-06-29 | 2021-01-01 | 武汉船用机械有限责任公司 | Test system of hydraulic valve |
| CN113049241A (en) * | 2021-04-13 | 2021-06-29 | 哈尔滨东安汽车发动机制造有限公司 | 8-speed automatic transmission switch valve responsiveness test device and test method |
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2015
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824916A (en) * | 2019-10-08 | 2020-02-21 | 南京航空航天大学 | Self-adaptive PWM control method for soft landing of electromagnetic high-speed switch valve |
| CN110824916B (en) * | 2019-10-08 | 2021-07-23 | 南京航空航天大学 | Self-adaptive PWM control method for soft landing of electromagnetic high-speed switch valve |
| CN112160951A (en) * | 2020-06-29 | 2021-01-01 | 武汉船用机械有限责任公司 | Test system of hydraulic valve |
| CN112160951B (en) * | 2020-06-29 | 2022-08-05 | 武汉船用机械有限责任公司 | Test system of hydraulic valve |
| CN113049241A (en) * | 2021-04-13 | 2021-06-29 | 哈尔滨东安汽车发动机制造有限公司 | 8-speed automatic transmission switch valve responsiveness test device and test method |
| CN113049241B (en) * | 2021-04-13 | 2022-10-11 | 哈尔滨东安汽车发动机制造有限公司 | 8-speed automatic transmission switch valve responsiveness test device and test method |
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| CN105298992B (en) | 2017-03-22 |
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