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In this paper, a new optimal robust control design approach is proposed for the task of spacecraft rendezvous such that both the stabilization and optimal performance are achieved. An approximate closed-form solution to the nonlinear optimal control problem is obtained by employing the θ-D technique, which is derived based on an approximate solution to the(More)
A common technical challenge encountered in many operations management models is that decision variables are truncated by some random variables and the decisions are made before the values of these random variables are realized, leading to non-convex minimization problems. To address this challenge, we develop a powerful transformation technique which(More)
A new approach to two-location joint inventory and transshipment control via L Dynamic programming Transshipment Inventory control Uncertain capacity a b s t r a c t We provide a new approach to the analysis of the optimal joint inventory and transshipment control with uncertain capacities by employing the concept of L ♮-convexity. In this approach, we use(More)
The new type of piezoelectric vibration accelerometer was studied, which sensitive element is cymbal piezocomposite transducer with 2-(0)-2 connectivity rather than conventional piezoelectric ceramic. The nonlinearity property of output voltage of this new piezoelectric vibration accelerometer was investigated. The measurement circuit was designed. Using(More)
—In this paper, we propose an efficient scheduling scheme for fading orthogonal frequency division multiplexing multiuser networks with user fairness rate constraints. This scheme, termed as binary rate scheduling (BRS), allows at most one user to transmit at a fixed rate if the selected user has its channel gain higher than a certain threshold. BRS scheme(More)