Advanced Driver Assistance Systems, or ADAS for short, are a group of technologies intended to help drivers operate their automobiles more safely and effectively. these systems often employ sensors, cameras, and other...
Advanced Driver Assistance Systems, or ADAS for short, are a group of technologies intended to help drivers operate their automobiles more safely and effectively. these systems often employ sensors, cameras, and other gadgets to keep an eye on the surroundings of the car and give the driver alerts or help in a multitude of circumstances, like lane departure, accident avoidance, and parking. Modern vehicles are increasingly utilizing ADAS technologies, which are regarded as an important first step towards completely autonomous vehicles.
this paper presents a novel trajectory optimization method for the 6-degrees-of-freedom powered landing problem in aerospace guidance and control. the method combines machine learning and convex optimization to achiev...
this paper presents a novel trajectory optimization method for the 6-degrees-of-freedom powered landing problem in aerospace guidance and control. the method combines machine learning and convex optimization to achieve real-time performance. Specifically, we formulate the powered landing problem as an optimal control problem and transform it into a convex optimization problem. To enhance the state-of-the-art sequential convex programming (SCP) algorithm, we use a deep neural network as an initial trajectory generator to provide a satisfactory initial guess for the SCP algorithm. Simulation results show that the proposed method achieves precise guidance of the vehicle to the landing site. Monte Carlo tests demonstrate that it can save an average of 40.8% of the computation time compared to the SCP method. therefore, the proposed scheme is suitable for real-time applications in the aerospace industry.
API Hook technology is a kind of advanced programming technology,which is used for large number of *** is the main method of IAT HOOK and INLINE *** article combines the hard-coded technique,independent code injection...
详细信息
API Hook technology is a kind of advanced programming technology,which is used for large number of *** is the main method of IAT HOOK and INLINE *** article combines the hard-coded technique,independent code injection,loading rules of windows system to put forward a new INLINE Hook technology.
Extensive research and development efforts have been dedicated to the investigation and advancement of the load commutation method-based automatic commutation device (CD) as a means to mitigate three-phase imbalance i...
Extensive research and development efforts have been dedicated to the investigation and advancement of the load commutation method-based automatic commutation device (CD) as a means to mitigate three-phase imbalance in low-voltage distribution networks (LVDNs). However, the present automatic commutation approach employs real-time balancing techniques. this entails that when the device detects an imbalance surpassing the threshold, it promptly executes commutation operations on certain power consumers where the user experiences a significant level of current, which poses challenges in the process of commutation. In this paper, a commutation-based load-pre-balanced system for low-voltage distribution line is created and put into practice. the system has the capability to perform the commutation operation prior to the user's utilization of electricity, hence eliminating the necessity for conducting high current commutation, which can mitigate the potential risks associated with automatic CD commutation. Firstly, a novel pre-balanced phase change strategy is introduced, accompanied by the construction of a pre-balanced system. Two commutation strategies, namely current-based and voltage-based, are designed for the pre-balanced system. Additionally, the effectiveness of the pre-balanced system in controlling the three-phase line load imbalance is verified by simulation on the MATLAB/Simulink platform. Finally, the hardware component of the system is realized through the use of the PIC18F27QI0 micro controller as the central controller. On the other hand, the system software component is developed by employing the programming languages C and Python, also a prototype is made for real environment testing. the experimental findings indicate that the designed pre-balanced system has the capability to efficiently regulate the imbalance in the three-phase line load.
Under the traditional machine learning that optimizes overall accuracy, the accuracy of a model for similar classes tends to be lower than for other classes. In this paper, we propose a method that can improve the acc...
详细信息
ISBN:
(数字)9781728182063
ISBN:
(纸本)9781728182070
Under the traditional machine learning that optimizes overall accuracy, the accuracy of a model for similar classes tends to be lower than for other classes. In this paper, we propose a method that can improve the accuracy of such problematic similar classes by adopting the concept of slices. the proposed method can improve the accuracy of slices effectively without degrading the overall accuracy.
this paper proposes a image in painting method for stereoscopic images based on hole-classification. the stereoscopic image pairs and their depth map images are generated by left and right shifting the original image ...
详细信息
this paper proposes a image in painting method for stereoscopic images based on hole-classification. the stereoscopic image pairs and their depth map images are generated by left and right shifting the original image according to its corresponding depth information. the generated left and right image may have disocclued areas or holes in the image after shifting operation. In this paper, disocclued areas or holes are classified into three type, gradient, clear-cut and layer and three different filling routes and filling methods are adopted according to these three types of holes. From the experimental results, it is proved that holes maybe mistakenly filled have been in painted with better corrections, in the meantime, in painted image becomes more natural and closer to the reality when it is viewed.
In this paper, Sobel edge detection is implemented on an FPGA using a DEl-SoC development board from TERASIC. OpenCL as a new scheme is used for implementation. the development process and implementation details are d...
详细信息
ISBN:
(纸本)9781538604915
In this paper, Sobel edge detection is implemented on an FPGA using a DEl-SoC development board from TERASIC. OpenCL as a new scheme is used for implementation. the development process and implementation details are described. the results show that OpenCL is an efficient method for FPGA development compared to traditional Hardware Description Language (HDL). We apply the OpenCL programming to FPGA-based Sobel edge detection, which gains a significant performance increase compared to that of software methods. the work of this paper can be extended to more complicated algorithms.
Network on Chip (NoC) has become a promising solution for the communication paradigm of the next-generation multiprocessor system-on-chip (MPSoC). As communication has become an integral part of on-chip computing, res...
详细信息
Network on Chip (NoC) has become a promising solution for the communication paradigm of the next-generation multiprocessor system-on-chip (MPSoC). As communication has become an integral part of on-chip computing, researchers are paying more attention to its implementation and optimization. Traditional techniques that model inter-processor communication inaccurately will lead to unexpected runtime performance, which is on average 90.8% worse than the predicted results based on an observation. In this paper, we present an application mapping and scheduling technique for NoC-based MPSoCs that integrates fine-grain optimization on inter-processor communications withthe objective of minimizing the schedule length. A communication model is proposed to address properly the latency of inter-processor communication with network contention. Performance evaluation results show that solutions obtained by the proposed technique can generate realistic performance that is on average 34.7% higher than traditional techniques, and the Integer-Linear programming (ILP) based approach can outperform the state-of-the-art heuristic algorithms by 31.1%. A case study on H.264 HDTV decoder shows that our approach achieves 22.8% improvement in prediction accuracy, 20.9% improvement in performance and 40% reduction in the number of network contentions.
Early hardware limitations of GPU (lack of synchronization primitives and limited memory caching mechanisms) can make GPU-based computation inefficient. Now Bio-technologies bring more chances to Bioinformatics and Bi...
详细信息
ISBN:
(纸本)9781479958399
Early hardware limitations of GPU (lack of synchronization primitives and limited memory caching mechanisms) can make GPU-based computation inefficient. Now Bio-technologies bring more chances to Bioinformatics and Biological engineering. Our paper introduces a way to solve the longest overlap region of non-coding DNA sequences on using the Compute Unified Device Architecture (CUDA) platform Intel(R) Core(TM) i3-3110m quad-core. Compared to standard CPU implementation, CUDA performance proves the method of the longest overlap region recognition of noncoding DNA is an efficient approach to high-performance bioinformatics applications. Studies show the fact that efficiency of GPU performance is more than 20 times speedup than that of CPU serial implementation. We believe our method gives a cost-efficient solution to the bioinformatics community for solving longest overlap region recognition problem and other related fields.
the paper deals withthe development of theoretical backgrounds to design optimal control systems for nonlinear plants with quadratic nonlinearity in right-hand expression. these backgrounds are based on solving dynam...
the paper deals withthe development of theoretical backgrounds to design optimal control systems for nonlinear plants with quadratic nonlinearity in right-hand expression. these backgrounds are based on solving dynamic programming problem for one class of nonlinear plants. We use ordinary differential equations in the normal matrix form to define the dynamic of the considered plant. then we apply feedback linearization transformation to rewrite the abovementioned equation as differential equations in the canonical form. the main advantage of such representation is the linear differential dependence between all state variables and only the last equation has a nonlinear function in this case. that is why we use the differential equations in the canonical form to define the perturbed motions equations and then the quadratic Lyapunov's function is defined as Newton's binomial. In this case Lyapunov's function is invariant to plant structure and parameters. the factors of this function are defined as factors of Newton's binomial. We use the defined in such a way Lyapunov function to solve dynamical programming problem and define control law as the Bellman's equation solution. the benefits of our approach are shown by considering an example of controller design for an electric drive with ventilator load. the numerical simulation shows that the designed system is asymptotically stable and has zero error.
暂无评论