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In this paper, the fractional-order integral state space realization of a class of any proper fractional transfer function is presented. The operational matrix is generalized into the block form for fitting to carry out the quasi state analysis of the fractional-order integral state space model. Finally, some examples are exhibited to prove the validity of the proposed developments.
In this paper, we study the problem of path following control for a non-minimum phase vertical take-off and landing (VTOL) aircraft. To locate the point on the desired path that corresponds to the minimum distance between the aircraft's position and the desired path, the projection method is used. Thus the proposed controller, consisting of feed-forward and state-feedback, not only forces the VTOL...
This paper is concerned with the observer-based H∞ control for continuous-time networked control systems (NCSs) considering packet dropouts and network-induced delays. Under consideration of packet dropouts and network-induced delays in Sensor-to-Controller (S-C) channel and network-induced delays in Controller-to-Actuator (C-A) channel, by taking the non-uniform distribution characteristic of measurement...
The geometric properties and optimality conditions for a class of typical model of linear bilevel programming with multiple followers are discussed in this paper. Under the assumption that the constrained set is nonempty and bounded, we study the geometric properties of the feasible set and reach the conclusion of the feasible set of weak quasi-convex and connected set. An optimum condition is obtained...
Trade-off between financial and non-financial factors is crucial for project portfolio selection. In this paper, a two-stage project portfolio selection model, which addresses these two factors, is proposed. In the proposed two-stage model, the return and cost of projects are characterized by triangular fuzzy number. In the first stage, a score model, focusing on the non-financial aspects, uses the...
Ship burble is one of the main sources leading to carrier landing error, thus the intensive researches on it are significant in optimizing the performance of carrier landing. A practical final approach pattern for carrier aircraft was described. It was characterized by the adjustment of a carrier's heading and velocity to cater for local sea-wind in creating favorable airflow field, besides the involved...
Location problem is about selecting one or more facility's geographical location to make the objective function to be optimal. in this article, firstly, we introduce three location models of project, single source of continuous, discrete location model for single source and multiple source location model of discrete location model. Then we illustrate three numerical examples and provide solution by...
Motivated by observations of actual clinic operations, we design a hybrid appointment system (HAS) for a single-physician clinic, in which the system serves a mix of acute and chronic-care patient by allowing both advance and same-day bookings to increase patient satisfaction. Because of the existence of no-shows of regular patients who book in advance, to maintain their revenue, clinics must carefully...
For the problem of the bounded rationality newsboy's order decision, we use the CVaR risk measurement criteria, the Arrow-Pratt risk aversion parameter and utility function, to establish a more realistic bounded rationality newsboy model, and optimized the model with the buy-back contract and revenue sharing contract. Result shows that the existence of bounded rationality deteriorate the supply chain's...
This paper introduces the Modelica Buildings library which has been developed for the advanced simulation of building energy and control systems. Modelica offers benefits compared to conventional approaches for integrating models from different domains, and for simulating systems with largely varying time responses such as building energy systems and control algorithms. This paper also introduces...
By introducing Multi-parametric Quadratic Programming, EMPC(Explicit Model Predictive Control) moves the frequent online computation of the optimization problem offline and provides an explicit optimal control law u*(x). Then the control law of current state x can be evaluated by searching the table online. This makes the system of large size or high sample rate finely controlled. In this paper, explicit...
A fast-rate model is obtained by transforming a system with state time-delay into a system without time-delay. Based on the fast-rate model, a dual-rate inferential predictive controller is designed and a new method on designing dual-rate inferential predictive controller for systems with state time-delay is given. Finally, a numerical example is given to illustrate the effectiveness of the proposed...
In order to simulate and analyze the soil temperature field of borehole groups in different working condition, a four boreholes vertical U-shaped pipe heat transfer model outside the boreholes in cylindrical coordinate is established. Using the Virtual Heat Source and Green function method, based on g-function and the unsteady three-dimensional heat transfer model, the four boreholes model gives out...
An effective way to reduce the computational complexity of short-term hydro generation scheduling is to adopt the so called aggregated hydro unit based model (AHU). However, some fundamental problems related with AHU have not been fully discussed in literature yet. The theoretical properties, methods for constructing approximated AHU and the related error analysis issues are discussed in this paper...
In this paper, we present a mixed-integer linear programming (MILP) formulation for a profit-based unit commitment problem with nonlinear emissions penalty. The quadratic fuel cost function and emissions function are approximated by piecewise linear functions, respectively, while the nonlinear emissions penalty is equivalently transformed into a mixed-integer linear form. Ramp rate limits and minimum...
Transmission dynamics has become one hot issue in complex systems and complex networks. It is very urgent to study the influences on the communication process based on the network topology structure. This paper focuses on modeling and control strategy of epidemic transmission SIR (Susceptible-Infected-Recovered) with community structure of networks. Firstly, network community structure features are...
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