319828.fig.006a
(a)
319828.fig.006b
(b)
319828.fig.006c
(c)
319828.fig.006d
(d)
Figure 6: Experimental results of HRFNN control system with mounted electric scooter at 2400 rpm: (a) command rotor speed 𝜔 ∗ , measure rotor speed 𝜔 𝑟 , and estimate rotor speed 𝜔 𝑟 ; (b) measure rotor position 𝜃 𝑟 and estimate rotor position ̂ 𝜃 𝑟 ; (c) command current 𝑖 ∗ 𝑎 and measure current 𝑖 𝑎 in phase 𝑎 ; (d) command current 𝑖 ∗ 𝑏 and measure current 𝑖 𝑏 in phase 𝑏 .