This paper proposes a strategy of a frequency separation-based coordinating power sources within offgrid applications. One of the application is an electric vehicle equipped with two power sources that is ultracapacitor (UC) and a battery, the interaction problem between can be formulated and solved as a linear quadratic Gaussian (LQG) optimal control problem. The two power sources that is batt...

An autonomous surface vehicle, based on a Prindle-19 catamaran and substituting a self-trimming vertical wing for the sail, was developed to demonstrate precision guidance and control. This vehicle, the Atlantis, was demonstrated to track straight line segments to better than 0.3 meters (1 − σ) when already trimmed for sail along the segment, using LQG control based on an identified plant using...

This paper studies the effect of varying structural stiffness parameters on the gust response of a very flexible aircraft (VFA). Twelve different aircraft models, as well as the baseline model, are subjected to a temporally and spatially distributed gust of varying durations. The open loop response of the models is examined as a function of different natural frequencies and frequency ratios. Li...

In certain applications the use of stable compensators greatly simplifies controller testing and implementation. Unfortunately, standard LQG theory, as well as mixednorm H2/H, theory, may yield compensators that are unstable. The problem of synthesizing stable stabilizing controllers has been of interest for many years [14], and a variety of techniques have been proposed based on modifications ...

Loop transfer recovery (LTR) techniques are known to enhance the input or output robustness properties of linear quadratic gaussian (LQG) designs. One restriction of the existing discrete-time LQG/LTR methods is that they can obtain arbitrarily good recovery only for minimum-phase plants. A number of researchers have attempted to devise new techniques to cope with non-minimum-phase plants and h...

We consider uplink power control for lognormal fading channels in the large population case. First, we examine the structure of the control law in a centralized stochastic optimal control setup. We analyze the effect of large populations on the individual control inputs. Next, we split the centralized cost to approach the problem in a game theoretic framework. In this context, we introduce an a...

Linear Quadratic Gaussian (LQG) systems are well-understood and methods to minimize the expected cost are readily available. Less is known about the statistical properties of the resulting cost function. The contribution of this paper is a set of analytic expressions for the mean and variance of the LQG cost function. These expressions are derived using two different methods, one using solution...

Planning under motion and observation uncertainties requires solution of a stochastic control problem in the space of feedback policies. In this paper, we reduce the general (n +n)-dimensional belief space planning problem to an (n)-dimensional problem by obtaining a Linear Quadratic Gaussian (LQG) design with the best nominal performance. Then, by taking the underlying trajectory of the LQG co...

We prove that the Tutte embeddings (a.k.a. harmonic/barycentric embeddings) of certain random planar maps converge to ?-Liouville quantum gravity (?-LQG). Specifically, we treat mated-CRT maps, which are discretized matings correlated continuum trees, and ? ranges from 0 2 as one varies correlation parameter. also show associated space-filling path on embedded map converges SLE? for ?=16/?2 (in...