White Paper: Robustness Issues in Fault Diagnosis and Fault Tolerant Control
In this paper, we have discussed robust formation control problem of multiple mobile robots with parametric uncertainties and actuator saturations in the environment with obstacles. There are two main results in our work.
We consider the formation control problem of multiple wheeled mobile robots with parametric uncertainties and actuator saturationsin the environment with obstacles. First, a nonconvex optimization problem is introduced to generate the collision-freetrajectory. If the robots tracking along the reference trajectory find themselves moving close to the obstacles, a new collision-freetrajectory is generated automatically by solving the optimization problem. Then, a distributed control scheme is proposed to keepthe robots tracking the reference trajectory. For each interacting robot, optimal control problem is generated. And in the frameworkof LMI optimization, a distributed moving horizon control scheme is formulated as online solving each optimal controlproblem at each sampling time.Moreover, closed-loop properties inclusive of stability and H∞ performance are discussed. Finally, simulation is performed to highlight the effectiveness of the proposed control law.
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Annual Salary Survey
Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.
There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.
But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.
Read more: 2015 Salary Survey