Type-۲ fuzzy logic controller design optimization using the PSO approach for ECG prediction

In this study, a hybrid model for prediction issues based on IT۲FLS and Particle Swarm Optimization (PSO) is proposed. The main contribution of this work is to discover the ideal strategy for creating an optimal value vector to optimize the membership function of the fuzzy controller. It should be emphasized that the optimized fuzzy controller is a type-۲ interval fuzzy controller, which is better than a type-۱ fuzzy controller in handling uncertainty. The limiting membership functions of the type-۲ fuzzy set domain is type-۱ fuzzy sets, which explains the trace of uncertainty in this situation. The proposed optimization strategy was tested using ECG signal data. The accuracy of the proposed IT۲FLS_PSO estimation technique was evaluated using a number of performance metrics (MSE, RMSE, error mean, error STD). RMSE and MSE with IT۲FI were calculated as ۰.۱۱۸۳ and ۰.۰۵۳۵, respectively. With IT۲FISPSO, these values were calculated as ۰.۰۱۴۰ and ۰.۰۰۲۹, respectively. The proposed PSO-optimized IT۲FIS controller significantly improved its performance under various operating conditions. The simulation results show that PSO is effective in designing optimal type ۲ fuzzy controllers. The experimental results show that the proposed optimization strategy significantly improves the prediction accuracy.

Keywords:

Interval type-۲ fuzzy set , Particle Swarm Optimization , optimization fuzzy controller , Fuzzy Sets , prediction problem