A hand-held portable servo valve tester and test method
A servo valve, hand-held technology, used in mechanical valve testing, instruments, measuring electricity and other directions, can solve problems such as large size, poor versatility, and inability to meet high-power servo valve testing requirements, to prevent mis-insertion, resist The effect of strong interference ability
Active Publication Date: 2020-06-30
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology
The current tester is mainly customized and can test specific types of servo valves. The test hardware adopts the control system of "sensor + data acquisition card + industrial computer + electric controller", which is relatively large in size and not convenient enough to move. Meet the test requirements of servo valves of various models and functions
Patent No. CN201710468329.4 A Handheld Portable Servo Valve Tester and Its Test Method Provides a servo valve tester that can be easily moved and meets the test requirements of various types of servo valves, but the output of the servo valve tester is The maximum current is 250mA, which cannot meet the test requirements of high-power servo valves. For example, the German Schneider servo valve is mainly a direct-acting structure, and the driving current is generally 300mA; and the method of testing the servo valve connector can only be used for specific servo valves. For testing, the versatility is not strong
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[0079] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0080] Such as image 3 and Figure 4 As shown, a hand-held portable servo valve tester includes a hand-held housing 9, a servo valve connector 1 arranged on the hand-held housing 9, a power module 6 arranged in the hand-held housing 9, an instruction Signal generator 5, spool test module 2, signal acquisition and display module 3, servo valve connector port enabling module 8, servo valve connector output power switch module 7 and working status indication module 4; the spool test module 2 It includes a first valve core test module 2-1 and a second valve core test module 2-2, and the first va...
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The invention discloses a hand-held portable servo valve tester, and the tester comprises a hand-held housing, a servo valve connector, a power module, a command signal generator, a valve element testmodule, a signal acquisition display module, a servo valve connector port enabling module, a servo valve connector output power switching module, and a working state indication module. The hand-heldportable servo valve tester provided by the invention can provide power and input signals for a servo valve, is small in size, can be held by a hand, is easy to carry and operate, can achieve high-efficiency DC / DC conversion, achieves the high-precision, multi-range and high-stability current or voltage output through a multi-stage closed-loop control circuit, can achieve the free I / V switching, can provide a variety of power signals and command signals for a to-be-tested servo valve, is large in output power, is simple in debugging and maintenance, has strong versatility, can realize variousperformance and fault tests of the servo valve under test, and greatly improves the test efficiency.
Description
technical field [0001] The invention belongs to the technical field of test instruments, and discloses a portable servo valve tester and a test method, which can provide various power sources and input signals for the servo valve, and determine the movement position of the valve core by monitoring the output signal of the valve core. Background technique [0002] In the fields of modern aerospace, shipbuilding, metallurgy, and chemical industry, electro-hydraulic servo control systems are widely used. As the core device of electro-hydraulic servo systems, electro-hydraulic servo valves are closely connected with mechanical action systems and electrical control systems, and their quality directly affects The control accuracy of the entire electro-hydraulic servo system, so its testing and maintenance work is particularly important. The current tester is mainly customized and can test a specific type of servo valve. The test hardware adopts the control system of "sensor + data...
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IPC IPC(8): G01M13/003
CPCG01R31/00
Inventor 姚坤杉王直丁建军王益山束秋霞马金科
Owner JIANGSU UNIV OF SCI & TECH