The Optimal Analysis And Simulation Of Deviation Control System Of Down Well

AADDS is one of the drilling tools which is studied for our country's lay land by ourselves. It is made up of a controlled stabilizer, a microprossor and a sensor. When the inclination which is measured by the sensor is too big while drilling, the microprocessor makes the controlled stabilizer work to produce a drop force which will decrease the inclination gradually. For the design of hydraulic system in the controlled stabilizer is on the help of experience, what the paper has done is to optimize it, to made the theory and rationalization of the design better.The optimizing design of full-element deep groove ball bearing is hard because there are continuous and discrete variables. Old methods can not solve the problem. The new method used in this paper is that we write program to make the discrete variables become continuous variables. And then the Matlab optimizing design tool box is used. The result is good, the carrying capacity of bearing is 23.2% higher than before.The movement of the whole hydraulic system is complicated, and it has many moving components, so it can not find a target function through a confirm math formula. In order to solve the problem, the paper put the ITAE,GA,Simulink and the Matlab optimizing design tool box band together, and use the ITAE as the adapt function of the GA. This method can contemporary satisfy the demand of rapidity,stability and veracity. It can get the clear response graph through the simulink emulational model, and can find the fall short of the response, and then the expectation response can be drawn out, the most feasible target function can be made out. And then we can write program to link the simulink emulational model and optimizing program, at last, write program to run the simulink model and optimize its response. This method not only can make target function for some abstract question , but also is used neatly and simply. And it is better for practice. It has advantages over old methods represented on the optimization of the whole hydraulic system of this paper.The optimizing methods of the paper studied are more feasible and simple for the practice. It is a new idea to solve practice questions.This paper made some conclusion as follow:(1) In this paper's opinion, if the full-element deep groove ball bearing is designed as the center diameter of it is161.5mm,the diameter of ball bearing is 5.5mm,number of it is 92, its carrying capacity will be 23.4% higher than before.(2) In this paper's opinion, if the offset the full-element deep groove ball bearing is 4.3mm, the rapidity will improve 7.2% than that is 4mm.(3) In this paper's opinion, the single—directional valve spring's stiffness if is 3.4371e+003N/m will be better for the system's stability.(4) In this paper's opinion, if the inner diameter of the pump is 23.3mm, the rapidity of the system will improve 25.5% than that is 20mm.