Figure 2

The state trajectory of {\mathit{x}}_{\mathbf{1}}\mathbf{(}\mathit{t}\mathbf{)} , {\mathit{x}}_{\mathbf{2}}\mathbf{(}\mathit{t}\mathbf{)} of the model ( 27 ) with {\mathit{J}}_{\mathbf{1}}\mathbf{=}\mathbf{0} , {\mathit{J}}_{\mathbf{2}}\mathbf{=}\mathbf{0} and initial conditions {\mathit{\varphi }}_{\mathbf{1}}\mathbf{(}\mathit{s}\mathbf{)}\mathbf{=}\mathbf{4}\mathbf{+}\mathbf{4}\mathbf{sin}\frac{\mathbf{2}}{\mathbf{3}}\mathit{\pi }\mathit{s} , {\mathit{\varphi }}_{\mathbf{2}}\mathbf{(}\mathit{s}\mathbf{)}\mathbf{=}\mathbf{3}\mathbf{+}\mathbf{2}\mathbf{|}\mathbf{cos}\frac{\mathbf{2}}{\mathbf{3}}\mathit{\pi }\mathit{s}\mathbf{|} , \mathit{s}\mathbf{\in }\mathbf{[}\mathbf{-}\mathbf{1}\mathbf{,}\mathbf{0}\mathbf{]} .