Abstract
The ball and plate system is a medium for researching automation control. As a multivariable, non-linear control object, the sphere studies how its fixed-point control and trajectory motion have great significance for automatic control. The software part of a ball and plate system designed in this paper adopts PID control. The hardware part uses STM32F103RCT6 as the main control chip. The position of the ball is obtained through the four-wire resistive screen and the HC05 Bluetooth module is used to communicate with the mobile phone. The corresponding state of the system is displayed by the TFT liquid crystal module. The fixed point control of the small ball and the specified trajectory movement are realized. The fixed point control can change the fixed point of the small ball at any time by clicking the mobile phone screen, and the specified trajectory movement can be controlled by the cricket system button or the mobile APP control.
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