In the analysis of regional landslide susceptibility, the geological data used usually have the characteristics of multiplicity and nonlinearity. At the same time, in the past researches, the selection of non-landslid...
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Predicting lane-change intentions of surrounding vehicles can effectively help autonomous vehicles reduce collisions caused by lane changes and ensure driving safety. Because prediction methods based on black-box mode...
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Predicting lane-change intentions of surrounding vehicles can effectively help autonomous vehicles reduce collisions caused by lane changes and ensure driving safety. Because prediction methods based on black-box models will lead to passengers’ distrust of machine prediction, the intention prediction methods used to autonomous driving need to be interpretable and trustworthy. This paper presents a method for intention prediction of surrounding vehicles by using a bidirectional long short term memory network (BiLSTM) with a conditional random field (CRF) layer above it. Compared with intention prediction methods using deep network, the proposed method can find the features that contribute most to the prediction, thereby improving the interpretability and ensuring the prediction performance. In addition, by employing the transfer characteristic of the CRF layer, traffic rules and the experience of skilled drivers can be embedded to the prediction in the form of rules. Use rules to constrain the intention prediction, thereby improving the trustworthiness of prediction results. Test results on naturalistic driving dataset show that the proposed method can predict the lane-change intention with an accuracy of 97.22%, which is higher than that of Bi-LSTM.
Multi-link drones represent a revolutionary advancement in aerial systems, as they can modify their shape mid-flight to accomplish specific missions. These changes in geometric structure can lead to significant variat...
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ISBN:
(数字)9798350349740
ISBN:
(纸本)9798350349757
Multi-link drones represent a revolutionary advancement in aerial systems, as they can modify their shape mid-flight to accomplish specific missions. These changes in geometric structure can lead to significant variations in the drone's inertial parameters. Consequently, accurately identifying these parameters becomes imperative to develop a faithful model capable of replicating the drone's behavior. In this study, we present a novel design of multi-link quadrotor. This drone can perform various tasks in different locations, such as navigating through confined spaces and executing transport missions, using only its body by modifying its mechanical structure in flight. Additionally, We address the identification of variable geometric parameters, such as the Center of Gravity (CoG) and the inertia matrix, which depend on the shape of the drone's structure. Therefore, we have introduced an analytical method for efficiently performing real-time calculations that can handle all these configurations, using MATLAB software. Subsequently, to verify and validate our method, we integrated a multi-body design model into SolidWorks software, thereby ensuring the accuracy and reliability of our results.
The distributed nonconvex constrained optimization problem with equality and inequality constraints is researched in this paper, where the objective function and the function for constraints are all nonconvex. To solv...
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Drones have evolved and developed across various domains to perform many tasks. Recently, this evolution has been driven not only by the development of new controllers but also by the introduction of new designs, such...
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ISBN:
(数字)9798350349740
ISBN:
(纸本)9798350349757
Drones have evolved and developed across various domains to perform many tasks. Recently, this evolution has been driven not only by the development of new controllers but also by the introduction of new designs, such as multi-link drones with serial structures. These latter have attracted the attention of researchers due to their unique features, such as transporting and manipulating objects. Moreover, their structure allows them to navigate quickly and precisely in narrow spaces, cluttered disaster areas, and challenging environments. To enhance the performance and safety of this type of drones, precise modeling that accurately replicates the system's behavior is essential. For that, in this article, first, we propose a multi-link design with a serial structure. This design allows for transforming the drone's configuration by adjusting the rotation angles of its links to achieve the desired shape for carrying out assigned tasks. Second, a new generic model is suggested for the multirotor. This model encompasses all possible configurations for this type of drone, taking into account its asymmetrical structure and variations of the center of gravity and inertia matrix.
Dear editor,Fuzzy models have been widely employed in various fields, such as complex industrial process modeling, classification, function approximation, and time series prediction. Extracting fuzzy rules is very imp...
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Dear editor,Fuzzy models have been widely employed in various fields, such as complex industrial process modeling, classification, function approximation, and time series prediction. Extracting fuzzy rules is very important as they determine the capabilities of the fuzzy model. In recent years, data-based methods such as fuzzy clustering, genetic algorithm, and neural networks [1–3], have been pro-
Inspired by the robust student t-distribution based nonlinear filter(RSTNF), a student tdistribution and unscented transform(UT) based filter for state estimation of heavy-tailed nonlinear dynamic systems, a modified ...
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Inspired by the robust student t-distribution based nonlinear filter(RSTNF), a student tdistribution and unscented transform(UT) based filter for state estimation of heavy-tailed nonlinear dynamic systems, a modified RSTNF for intermittent observations is derived. The fusion estimation for nonlinear multisensor systems with intermittent observations and heavy-tailed measurement and process noises is *** this work, the centralized fusion, the sequential fusion, and the na¨?ve distributed fusion algorithms are presented, respectively. Theoretical analysis shows that the presented algorithms are effective, which are the efficient extension of the classical unscented Kalman filter(UKF) or the cubature Kalman filter(CKF) based algorithms with Gaussian noises. Simulation results show that the presented algorithms are effective and feasible.
In recent years, owing to the growing maturity of Internet of Things technology and mobile communication technology, intelligent wearable devices have developed *** have been widely applied in aviation, medicine, mili...
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In recent years, owing to the growing maturity of Internet of Things technology and mobile communication technology, intelligent wearable devices have developed *** have been widely applied in aviation, medicine, military, entertainment and other fields. Through intelligent wearable devices, people can communicate efficiently, dynamically perceive external environments, and monitor the body's vital signs.
This paper provides an oscillation trajectory optimization and control method for two-link underactuated manipulators (UMs) in a vertical plane. The proposed method solves the problem that the UMs cannot always enter ...
This paper provides an oscillation trajectory optimization and control method for two-link underactuated manipulators (UMs) in a vertical plane. The proposed method solves the problem that the UMs cannot always enter the balance region in the partitioning method. First, we establish the system dynamic model, and analyze the system couple characteristics. Then, we program an oscillation trajectory for the active link, and use the intelligent method to obtain the trajectory parameters, so ensuring the system can reach the area adjacent to the target position through tracking control. Next, we design the controller to realize the stable control at the target position. Finally, the simulation results show the effectiveness and generality of the control strategy.
Abnormal or drastic changes in the natural environment may lead to unexpected events,such as tsunamis and earthquakes,which are becoming a major threat to national ***,no effective assessment approach can deduce a sit...
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Abnormal or drastic changes in the natural environment may lead to unexpected events,such as tsunamis and earthquakes,which are becoming a major threat to national ***,no effective assessment approach can deduce a situation and determine the optimal response strategy when a natural disaster *** this study,we propose a social evolution modeling approach and construct a deduction model for self-playing,self-learning,and self-upgrading on the basis of the idea of parallel data and reinforcement *** proposed approach can evaluate the impact of an event,deduce the situation,and provide optimal strategies for *** the breakage of a submarine cable caused by earthquake as an example,we find that the proposed modeling approach can obtain a higher reward compared with other existing methods.
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