A loading method for a test system of an electric actuator
A technology of electric actuators and testing systems, applied in measuring devices, power metering, instruments, etc., can solve the problems of uncontrollable loading speed, low torque discrete precision, and unsmooth loading curve, etc., and achieve stable, high-efficiency and accurate loading , loading continuous high, loading curve smooth effect
Active Publication Date: 2016-02-03
YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD +2
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Problems solved by technology
However, the biggest problem with linear loading is the uncontrollability of time. When the loading speed is close to the control torque, the loading speed cannot be controlled, which directly leads to low precision; The curve is not smooth, the loading is discontinuous, and the torque discrete precision is not high.
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[0025] The present invention as Figure 1-2 Shown:
[0026] First, establish a mathematical model of the loading curve of the test system (composed of test benches, etc.) based on known data parameters,
[0027] The known parameters include m-to-one correspondence time t 1 , t 2 ... t m and torque T 1 , T 2 ...T m , where m≥2;
[0028] Described mathematical model comprises several mathematical functions, and described mathematical model reflects the law of data variation; There is no linear correlation between several described mathematical functions, whether the appropriateness of loading mathematical model establishment will have influence on final loading function;
[0029] Then, define model parameters according to the mathematical model, set up a model unknown parameter vector, calculate a coefficient matrix and a constant matrix, and then solve the matrix equation, and the solution obtained is a model unknown parameter vector;
[0030] After the mathematical mod...
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The invention relates to a loading method for a test system of an electric actuating mechanism. The loading method for the test system of the electric actuating mechanism, provided by the invention has the advantages of smooth loading curve, continuous loading and high torque dispersing precision. The loading method comprises the following steps: 1) acquiring a known parameter; 2) establishing a mathematical model; 3) calculating an unknown parameter vector a of the mathematical model according to the mathematical model confirmed in the step 2); 4) substituting the unknown parameter vector a of the mathematical model confirmed in the step 3) into the mathematical model established in the step 2), thereby acquiring a curve loading function; 5) loading the curve loading function into the test system, and automatically calling the curve loading function by the test system during a running process, thereby testing the electric actuating mechanism. According to the loading method, the continuousness and smoothness of the loading curve are kept by the loading function all the time during the loading process, so that the stable, high-efficient and accurate loading is realized. The loading method has the advantages of smooth loading curve, continuous loading and high torque dispersing precision.
Description
technical field [0001] The invention relates to a loading method of an electric actuator testing system. Background technique [0002] Various valves and electric actuators for driving valves are equipped in automatic control systems such as power stations, petroleum, steel, chemical industry, oil pipelines, and sewage treatment. [0003] In the torque-related test process of electric actuators, the loading method of the test system generally adopts linear loading, and more advanced ones use segmented loading. Loading method of institutional testing system", the document with application number "201110001175.0". [0004] However, the segmented loading curve in this case is actually a broken line composed of discontinuous straight lines; therefore, no matter which method is adopted, it is a loading method based on straight lines. However, the biggest problem with linear loading is the uncontrollability of time. When the loading speed is close to the control torque, the load...
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IPC IPC(8): G01L3/00
Inventor 蔡军陈久松丁镠龚九洲费向军许海洋吴伟伟
Owner YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD