In modern and modern industrial control processes, there are many conveyor equipment control processes that cannot be well automated. The problem is that the process model of these belt conveyor complex systems cannot be established, or even if it can be established after some simplifications, the model is so complicated that it cannot be solved in meaningful events and cannot be controlled in real time. Although a systematic identification method can be used, the time and analysis of a large number of tests and changes in test conditions have caused the model to be unable to be accurately established. The variable-speed hydraulic coupler is a non-linear system, and it is quite difficult to accurately establish the mathematical model. The establishment of the mathematical model of each link of the system is assumed, assumed, approximated, ignored and simplified. In this way, the deduced transfer function is bound to be different from reality, and the system is a system with time-varying, hysteresis, and saturation.

Therefore, the method of classical control theory is used to study the system. It can only be used for reference and comparison. For such a belt conveyor system, even if the method of computer simulation and modern control theory is adopted, it is difficult to accurately determine the parameters. The conclusions drawn cannot be used as rules and can only be used as references for further research. The number of input and output is small, and it can even be simplified to a single-input, single-output control system. There is no need to use modern control theory of multi-variable control and complex process control methods.

Belt conveyor manufacturers also know from the experience of a large number of field workers: According to theoretical research methods, in practical applications, especially in software programming, a lot of adjustments must be made, especially in software programming, which requires repeated trials. Summarizing the above analysis process, considering the movement of the speed-adjustable hydraulic coupling spoon and the amount of liquid filling, the circulation flow rate and the output torque, rotation speed are all with great ambiguity. Linearity, time-varying, large delay, random disturbance of the process or unmeasured characteristics make it difficult to establish a mathematical model of the process. For this reason, we envision the method of replacing automatic control with human beings, that is, using fuzzy control to study, which may get better results.