A calibration device for a servo valve temperature screen system
A calibration device and servo valve technology, which is applied in fluid pressure actuation devices, fluid pressure actuation system components, fluid pressure actuation system testing, etc., can solve the problems of difficult measurement of the current at both ends of the servo valve and inconvenient calibration work, etc. , to achieve the effect of flexible assembly and disassembly, convenient operation and strong work flexibility
Inactive Publication Date: 2018-11-23
BEIJING JIAOTONG UNIV
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Problems solved by technology
The calibration device of the existing servo valve temperature screen system needs to set up the servo valve and related hydraulic system in the actual work, and the calibration can only be carried out under the condition of an external power supply, and the current at both ends of the servo valve is not easy to measure, which brings great difficulties to the calibration work. great inconvenience
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[0019] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0020] The calibration device of the servo valve temperature screen system disclosed by the present invention includes a calibration box and a multimeter, and the multimeter is a desktop multimeter;
[0021] Such as figure 1 As shown, the rear end of the calibration box is provided with an aviation plug 1 connected to the industrial computer in the servo valve temperature screen system, which is used for two-way signal transmission between the calibration box and the industrial computer; there is a sliding rheostat 2 insid...
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The invention discloses a calibration device for a servo valve temperature screening system. The calibration device comprises a calibration box and a universal meter. The calibration box is provided with an aviation plug connected with an industrial personal computer, a Vin+ port, a Vin- port, a Vout+ port, a Vout- port, an R+ port, an R- port, an I+ port, an I- port and a rotary knob for adjusting the resistance value. A sliding variable resistor is arranged inside the calibration box. The Vin+ port and the Vin- port are connected with an output port of the industrial personal computer; the Vout+ port and the Vout- port are connected with a voltage gear of the universal meter; the Vout+ port and the Vout- port are in parallel connection with the Vin+ port and the Vin- port correspondingly inside the calibration box and are connected with the aviation plug through a follower circuit; the R+ port and the R- port can be connected to a resistance gear of the universal meter; the I+ port and the I- port can be connected to a current gear of the universal meter; a parallel connection circuit, inside the calibration box, of the R+ port and one fixed end of the sliding variable resistor, and the I- port are connected to the aviation plug in a parallel mode; and the R- port and the I+ port are connected to the sliding end of the sliding variable resistor in a parallel mode inside the calibration box. The calibration mode is simple, and operation is convenient.
Description
technical field [0001] The present invention relates to voltage and current sensing. More specifically, it relates to a calibration device for a servo valve temperature screen system. Background technique [0002] The servo valve temperature screen system includes an industrial computer and a hydraulic system. The industrial computer outputs electrical signals to control the hydraulic system. Since the aerospace servo valve needs to work for a long time and at high frequency, it is necessary to control the output voltage and the output voltage of the industrial computer in the servo valve temperature screen system. The current is calibrated to meet the precise operation of aerospace servo valves. The calibration device of the existing servo valve temperature screen system needs to set up the servo valve and related hydraulic system in the actual work, and the calibration can only be performed under the condition of an external power supply, and the current at both ends of t...
Claims
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IPC IPC(8): F15B21/02F15B19/00
CPCF15B19/00F15B21/02
Inventor 延皓姚磊董立静李长春王凤聚李磊黄静冯利军
Owner BEIJING JIAOTONG UNIV