随着油田注水进入精细化管理，对注水流量的控制精度要求不断提高，并且由于以前的注水流量控制方法难以满足当前的注水调配要求，因此本课题设计了基于DSP的流量自动测调系统。 在流量测量方面，综合各种流量测量方案，最终确定超声波流量计作为流量的测量单元，依据超声波流量测量原理，完成了超声波流量计的测量单元的设计。在流量控制方面，当流量自动测调系统处于注水工作层时，通过控制器控制调节臂打开，并使其与可调堵塞器进行对接；当系统开始进行注水调节时，根据地面控制器设定的流量值与流量计测得当前值，经过模糊自整定PID算法的运算产生控制量，依据控制量的大小控制调节臂电机的转动方向与转速，继而通过机械连杆机构控制可调堵塞器的开度，从而实现流量的调节。 本文详细介绍了模糊自整定PID控制算法设计，并使用MATLAB中的SIMULINK工具箱建立其控制系统模型，而后对控制系统进行仿真分析，从仿真的结果可以看出，模糊自整定PID控制算法具有较好的控制效果，能够达到预期的目标。 本设计采用DSP控制芯片TMS320F2812作为系统的核心控制器，完成了流量测量单元以及流量测调单元的硬件设计，在硬件平台的基础上，设计完成了流量测量以及流量的调节控制算法的软件程序设计，以及其与地面控制器通信单元的软件程序设计。 在系统设计完成之后，通过现场实验证明，本文设计的流量自动测调系统具有较好的流量调节效果，与传统注水调配方案相比，具有较高的工作效率，大幅度降低了成本。

In oil field water injection was into the fine management, the accuracy of flow control requirement enhances unceasingly, and because the previous water injection flow control method can’t meet the requirement of current water injection allocation, so this topic has designed flow automatic measuring system based on DSP. In terms of the flow measurement, integrated all sorts of the flow measurement scheme, ultimately determine the ultrasonic flow-meter for flow measurement unit, according to the principle of ultrasonic flow measurement, completed the design of ultrasonic flow-meter measurement unit. In terms of flow control, when the flow automatic measuring system in water flooding layer, through the controller to control arm is opened, and make it with adjustable plug docking; When adjust the water injection system began, according to the ground controller set flow rate values and the measured current value of the flow meter, a arithmetic of fuzzy self-tuning PID algorithm control, based on control volume control to adjust the size of the arm of the motor rotation direction and speed, and then through a mechanical linkage control adjustable plug the opening, so as to realize the adjustment of flow rate. This paper introduces in detail the fuzzy self-tuning PID control algorithm design, and using SIMULINK toolbox in the MATLAB to build the control system model, and then simulation analysis was carried out on the control system, can be seen from the results of the simulation, fuzzy self-tuning PID control algorithm has good control effect, achieve the desired goals. This design adopts the DSP control chip TMS320F2812 as the core of system controller, and completed the flow measurement unit and flow measurement unit in the hardware design, on the basis of the hardware platform, the design completed the adjustment of the flow measurement and flow control algorithm, software program design and its communication with the ground controller unit of software programming. When the system design is completed, through the field experiments show that this design flow of automatic test system has a good flow regulating effect, compared with the traditional water injection allocation, has the high work efficiency, reduce the personnel cost.