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Journal of Robotics
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Journal of Robotics
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2009
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Article
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Fig 6
/
Research Article
Output Feedback Nonlinear
𝐻
∞
-Tracking Control of a Nonminimum-Phase 2-DOF Underactuated Mechanical System
Figure 6
Time evolution of the determinants of the principal minors of the matrix
𝑃
∈
ℝ
4
×
4
𝑃
𝑚
1
,
𝑃
𝑚
2
,
𝑃
𝑚
3
,
𝑃
𝑚
4
.
(a)
(b)
(c)
(d)