Finite-time convergent terminal guidance law design based on stochastic fast smooth second-order sliding mode
TL;DR: In this paper, a novel finite-time convergent terminal guidance law, based on stochastic fast smooth second-order sliding mode control theory, is proposed in order to handle the track imprecision caused mainly by inertial lag, model uncertainties and atmospheric environment disturbances, as well as the spatiotemporal noise caused by target maneuver term.
About: This article is published in Optik.The article was published on 2016-08-01. It has received 10 citations till now. The article focuses on the topics: Terminal guidance & Guidance system.
Citations
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TL;DR: A systematic survey of state-of-the-art algorithms that are capable of generating reliable guidance and control commands for space/aerospace vehicles and particular focus is given to recent attempts to explore the possible uses of AI techniques in connection with the optimal control of the vehicle systems.
56 citations
TL;DR: In this paper, the authors considered the problem of a missile intercepting a maneuvering target with impact angles constraints, and two finite-time guidance laws are proposed based on the coupled dynamics.
41 citations
30 Jun 2016
TL;DR: In this paper, the authors presented a model for SC performance evaluation using 5DBSC and Levenberg-Marquardt Back-propagation (LM•BP) neural network algorithm.
Abstract: Supply chain SC activities transform natural resources, raw materials, and components
into various finished products that are delivered to end customers. A high efficient
SC would bring great benefits to an enterprise such as integrated resources, reduced
logistics costs, improved logistics efficiency, and high quality of overall level of services.
In contrast, an inefficient SC will bring additional transaction costs, information
management costs, and resource waste, reduce the production capacity of all enterprises
on the chain, and unsatisfactory customer relationships. So the evaluation of a SC is
important for an enterprise to survive in a competitive market in a globalized business
environment. Therefore, it is important to research the various methods, performance
indicator systems, and technology for evaluating, monitoring, predicting, and
optimizing the performance of a SC. A typical procedure of the performance evaluation
(PE) of a SC is to use the established evaluation performance indicators, employ an
analytical method, follow a given procedure, to carry out quantitatively or qualitatively
comparative analysis to provide the objective and accurate evaluation of a SC
performance in a selected operation period. Various research works have been carried
out in proposing the performance indicator systems and methods for SC performance
evaluations. But there are no widely accepted indicator systems that can be applied in
practical SC performance evaluations due to the fact that the indicators in different
systems have been defined without a common understanding of the meanings and the
relationships between them, and they are nonlinear and very complicated.
In this chapter, the conception of SC performance is first presented, then relevant
theories about supply chain performance evaluation are discussed and several common
methods of supply chain performance evaluation are discussed. Finally, an evaluation
model is presented for SC performance evaluation using 5 dimensional balanced
scorecard (5DBSC) and Levenberg–Marquardt Back‐propagation (LM‐BP) neural
network algorithm.
25 citations
TL;DR: A robust continuous guidance law with impact angle constraints in the presence of both an acceleration saturation constraint and a second-order-lag autopilot is developed for the three-dimensional terminal guidance problem of a missile intercepting a manoeuvring target.
Abstract: In this paper, for the three-dimensional terminal guidance problem of a missile intercepting a manoeuvring target, a robust continuous guidance law with impact angle constraints in the presence of ...
9 citations
TL;DR: The proposed guidance law is better attack precision than traditional guidance law, and the PWPF modulator with variable dead zone is more reasonable in fuel allocation and smaller on miss distance than traditional PWPf modulator.
6 citations
References
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Book•
27 Aug 1998
TL;DR: This text provides the reader with a grounding in sliding mode control and is appropriate for the graduate with a basic knowledge of classical control theory and some knowledge of state-space methods.
Abstract: In the formation of any control problem there will be discrepancies between the actual plant and the mathematical model for controller design. Sliding mode control theory seeks to produce controllers to over some such mismatches. This text provides the reader with a grounding in sliding mode control and is appropriate for the graduate with a basic knowledge of classical control theory and some knowledge of state-space methods. From this basis, more advanced theoretical results are developed. Two industrial case studies, which present the results of sliding mode controller implementations, are used to illustrate the successful practical application theory.
3,355 citations
TL;DR: In this article, the authors proposed arbitrary-order robust exact differentiators with finite-time convergence, which can be used to keep accurate a given constraint and feature theoretically-infinite-frequency switching.
Abstract: Being a motion on a discontinuity set of a dynamic system, sliding mode is used to keep accurately a given constraint and features theoretically-infinite-frequency switching. Standard sliding modes provide for finite-time convergence, precise keeping of the constraint and robustness with respect to internal and external disturbances. Yet the relative degree of the constraint has to be 1 and a dangerous chattering effect is possible. Higher-order sliding modes preserve or generalize the main properties of the standard sliding mode and remove the above restrictions. r-Sliding mode realization provides for up to the rth order of sliding precision with respect to the sampling interval compared with the first order of the standard sliding mode. Such controllers require higher-order real-time derivatives of the outputs to be available. The lacking information is achieved by means of proposed arbitrary-order robust exact differentiators with finite-time convergence. These differentiators feature optimal asymptot...
2,954 citations
TL;DR: It turns out that the deviation of the system from its prescribed constraints (sliding accuracy) is proportional to the switching time delay and a new class of sliding modes and algorithms is presented and the concept of sliding mode order is introduced.
Abstract: The synthesis of a control algorithm that stirs a nonlinear system to a given manifold and keeps it within this constraint is considered. Usually, what is called sliding mode is employed in such synthesis. This sliding mode is characterized, in practice, by a high-frequency switching of the control. It turns out that the deviation of the system from its prescribed constraints (sliding accuracy) is proportional to the switching time delay. A new class of sliding modes and algorithms is presented and the concept of sliding mode order is introduced. These algorithms feature a bounded control continuously depending on time, with discontinuities only in the control derivative. It is also shown that the sliding accuracy is proportional to the square of the switching time delay.
2,714 citations
TL;DR: A comprehensive and up-to-date survey of the techniques for tracking maneuvering targets without addressing the measurement-origin uncertainty is presented in this article, including 2D and 3D maneuver models as well as coordinate-uncoupled generic models for target motion.
Abstract: This is the first part of a comprehensive and up-to-date survey of the techniques for tracking maneuvering targets without addressing the so-called measurement-origin uncertainty. It surveys various mathematical models of target motion/dynamics proposed for maneuvering target tracking, including 2D and 3D maneuver models as well as coordinate-uncoupled generic models for target motion. This survey emphasizes the underlying ideas and assumptions of the models. Interrelationships among models and insight to the pros and cons of models are provided. Some material presented here has not appeared elsewhere.
1,897 citations
Book•
01 Jan 1990
TL;DR: In this paper, a three-loop Autopilot is used to provide tactical and strategic guidance for a single-antenna MIMO-BMG system using MATLAB units.
Abstract: Numerical Techniques Fundamentals of Tactical Missile Guidance Method of Adjoints and the Homing Loop Noise Analysis Convariance Analysis and the Homing Loop Proportional Navigation and Miss Distance Digital Fading Memory Noise Filters in the Homing Loop Advanced Guidance Laws Kalman Filters and the Homing Loop Other Forms of Tactical Guidance Tactical Zones Strategic Considerations Boosters Lambert Guidance Strategic Intercepts Miscellaneous Topics Ballistic Target Properties Extended Kalman Filtering and Ballistic Coefficient Estimation Ballistic Target Challenges Multiple Targets Weaving Targets Representing Missile Airframe with Transfer Functions Introduction to Flight Control Design Three-Loop Autopilot. Appendices: Tactical and Strategic Missile Guidance Software Converting Programmes to C Converting Programmes to MATLAB Units.
1,536 citations