Parameter Selection Guidelines for a Parabolic Sliding Mode Filter Based on Frequency and Time Domain Characteristics

Figure 5

Influence of 𝛼 on the gain and the phase shift. In each figure, the result of filter (1a)–(1c) with 𝛼=1 refers to that of filter (4a)–(4c).

(a) Gain plot for different values of 𝛼

(b) Phase plot for different values of 𝛼

(c) Relation between 𝛼 and phase shift at 𝜔_𝑐𝑞=100 rad/s with 𝑈=0.001 s²