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Table 5 Optimal parameters of generalized backstepping controller

From: A novel fractional-order hyperchaotic system with a quadratic exponential nonlinear term and its synchronization

  k 1 k 2 k 3 k 4 k 5
GA 29.95 29.61 26.24 21.39 28.67
COA 30 30 30 20.33 25.35
PSO 30 30 27.48 20.66 27.51
ICA 30 30 29.55 20.77 25.53