Optimal Design of the High Speed Blend Machine Control System

The high-speed blend machine is a new type of house appliance which can produce a variety of drinks. Based on the experiences fed back by the users of the machines, it has been noticed that the peel of fruit or vegetable will be left over in the machine due to not well-designed products produced by different brands. The unsatisfactory performance in crushing the raw materials causes unpleasant flavor and taste. By analyzing the characteristics of a single-phase series motor, the load change has a greater influence on the motor speed, and the motor speed is an important factor that affects the material cell-wall breaking rate. Therefore, in this paper, we designed a fuzzy self-adaptive PID controller based on the STM32 microcontroller to perform the hardware and software design of the series motor control system of the high-speed blend machine. We carried out an experimental test to verify that the fuzzy adaptive PID controller was the feasibility of series motor speed. We designed and tested three control modes with different rotation speeds. The experiment found that there was a good crushing effect under the variable speed control mode, which provided a certain basis for the optimization of the control mode. Finally, we established a recognition equation according to the effect of different fruit or vegetable on the start-up speed of a single-phase series motor. We used the minimum mean error method to identify the material to improve the control ability of the high-speed blend machine in handling different fruit crushing processes and optimize crushing degree and crushing effect, which provided a new idea for realizing the intelligent control of house appliances.