Abstract:To address the challenges posed by multiple coupling points and high difficulty in controlling levitation in a three-track electromagnetic levitation system arranged in a triangular prism configuration, a fuzzy sliding mode control method was proposed to achieve independent control of each coupling point. Based on the specific structure of the three-track electromagnetic levitation system, a decoupling analysis of the rotational motion of the system model was conducted to obtain control variables that could independently control the rotational offset angle and the levitation air gap height. Fuzzy input, output, and rules were established, and the fuzzy control variables were integrated with system errors for sliding mode control, enabling the system's levitation error to converge rapidly to zero. To verify the effectiveness of the fuzzy sliding mode controller in controlling the system's levitation, both simulation and experimental models were developed. The results showed that compared to traditional control methods, the fuzzy sliding mode control had a faster response, stronger anti-interference ability, and was beneficial for vibration control during the levitation process.