Bored pile control method, control system and drill using the control system
A control system and control method technology, applied to the automatic control system of drilling, drilling equipment and methods, sheet pile walls, etc., can solve the problems of deviation of measurement results, failure of CFG drilling rigs to provide effective prompts, and influence on construction quality, etc., to achieve The effect of high accuracy, reducing the number of construction personnel and reducing construction costs
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[0059] The basic idea of the present invention is to automatically control the drilling and retracting of the drill rod; obtain reliable mud pressure at the bottom of the drill rod by detecting the main hoisting force, obtain the mud pressure deviation at the bottom of the drill rod, and use it as the control object to control. The drill pipe is lifted back at the desired speed to maintain a proper and stable pressure at the concrete outlet at the bottom of the drill pipe.
[0060] To facilitate the description of the present invention, the relevant terms are first explained as follows:
[0061] PID control, namely proportional, integral, and differential control, also known as PID regulation. Among them, P represents the proportional gain, the proportional adjustment setting is large, when the system has a deviation, the adjustment can be speeded up to reduce the error, but an excessive proportional gain will cause the system to be unstable; I represents the integral time, the ...
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