Automatic control method and system for tail gate water level in river model

Abstract

The invention relates to automatic control method and system for tail gate water level in a river model and belongs to the technical field of water level control. The method includes firstly, acquiring current water level and present current output by a valve; secondly, determining current increment by PID (proportion, integration and differentiation) control according to the current water level and a target water level, and adding together the present current output by the valve and the current increment to obtain a valve current input value; and thirdly, converting the valve current input valve into an analog signal input to the valve so as to regulate opening of the valve. The method and system allow the tail gate water level in river model test to reach the set target water level quickly and stably and allow for continuous adjustment, the defect that difficulty of manual observation caused by slow water level change causes water level deviation is overcome, and reliability in river model test is improved.

Description

technical field [0001] The invention relates to a tailgate water level automatic control method and system in a river engineering model, belonging to the technical field of water level control. Background technique [0002] The river engineering model is a method of reducing the river into a model according to the principle of similarity, and studying the changes of various relevant factors (water flow, terrain, etc.) in different situations in the model. In the river engineering model test, the adjustment of the tailgate water level is an important link in the test project, and the accuracy of its adjustment will directly affect the accuracy of the test results. [0003] In the prior art, manual control is generally used to adjust the water level of the tailgate. When the tip of the water level measuring needle installed on the water level control section of the tailgate of the river engineering model is adjusted to the water surface position required by the target water le...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a tailgate water level automatic control method and system in a river engineering model to solve the problem in the prior art that manual adjustment of the tailgate water level fluctuates from high to low, resulting in low adjustment efficiency. For this reason, the present invention adopts the following Technical solutions:

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