The transient impact hypothesis was extended, and the oblique collision model was established by considering the tangential slip. In order to solve this problem, the oblique-impact equations for cam-follower were transformed into a linear complementarity problem. Impulsive control method was employed to control or anti-control the nonlinear responses. The simulation results show that the cam-follower system performs very complex nonlinear characteristics, such as period, quasi-period and chaos responses. Using the impulsive control method, the nonlinear responses of the cam-follower system can be controlled to P(n, n) and P(∞, n) or anti-controlled to chaos.

Abstract:A new kind of multivariable adaptive fuzzy decoupling controller is present for Aero-engine, which consists of multivariable fuzzy decoupling control and fuzzy model reference learning control. A fuzzy inverse model is used to produce and adjust fuzzy rules online. The simulation results show that this controller is effective.

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Background Oral rehydration solution (ORS) has the potential to avert deaths from diarrheal diseases. Nevertheless, in poor nations only about half of children with diarrhea receive ORS. Since 2014, India has run an annual Intensified Diarrhea Control Fortnight to increase ORS treatment. A key element of the Fortnight plan is the free distribution of ORS to over 100 million homes with young children. Methods We compared ORS usage reported in the 2015/2016 National Family Health Survey in the 3 months before the 2015 and 2016 Fortnights to the 2 months after. We control for state fixed effects and for observable characteristics of the child and household. To reduce data mining, we use a machine learning method – cross-fit partialing-out lasso logistic regression. Results Our point estimate is that ORS usage rose 1.9 percentage points after the Fortnight, closing about 3% of the gap to universal usage. The increase is not statistically significant at conventional levels. These estimates are inconsistent with government claims that, in 2015, 63% of homes received free ORS. Conclusion The Fortnight did not achieve most of its goals. The intervention could benefit from more transparent monitoring, a more rigorous evaluation, and improvements in operations.