In an alternate formulation to the Hamilton-Jacobi approach for finding the optimal control of linear systems with Quadratic cost functionals, one must solve a Volterra integral equation of the second kind. Using expl...
详细信息
In an alternate formulation to the Hamilton-Jacobi approach for finding the optimal control of linear systems with Quadratic cost functionals, one must solve a Volterra integral equation of the second kind. Using explicit expressions derived from the Volterra formulation, the paper describes an ilerative algorithm for the numerical computation of the optimal control at equally spaced & number of time stations in the control interval 0 ≤ t ≤ 1. It is assumed that the structural system with large number of degrees-of-freedom n is identified with fewer vibration modes 1 ≤ r ≤ n. the computational complexity of the algorithm is shown to be of order [4r (q max + r) ms +n 2 )], where m is the number of control variables, and q max is the required maximum number of iterations of Jacobi-type
Real-time hybrid simulation (RTHS) is a novel testing method that combines numerical simulation and physical testing to evaluate the dynamic performance of engineering structures in large specimens using existing expe...
详细信息
Real-time hybrid simulation (RTHS) is a novel testing method that combines numerical simulation and physical testing to evaluate the dynamic performance of engineering structures in large specimens using existing experimental facilities, thus eliminating the scaled effect. In recent years, studies on RTHS have expanded beyond traditional engineering structures, such as wind turbines, automobiles, and ocean structures. Thus far, the dimensions of physical substructures in RTHS are still relatively small, limited by the accuracy of system control for physical systems and the real-time calculation efficiency of numerical simulations. This study summarizes the achievements of real-time numerical simulations for RTHS, including the dimensions of the physical specimen, strategy of numerical simulation, and integral algorithms of RTHS. Meanwhile, two theoretically feasible methods based on parallel computing and surrogate models are discussed, which may be the development trends needed to improve the efficiency and accuracy of numerical solutions in real-time and enlarge the application scope of RTHS. This study summarized the achievement in real-time numerical simulation for RTHS. Two theoretically feasible solving methods respectively based on parallel-computing and surrogate model were discussed. image
When solving the problem in Computer Assisted Detection by the approach of Pattern Recognition, the lesion data always exhibited high-dimensional and inhomogeneous, which makes most of the traditional classifiers can ...
详细信息
ISBN:
(纸本)9781424441990
When solving the problem in Computer Assisted Detection by the approach of Pattern Recognition, the lesion data always exhibited high-dimensional and inhomogeneous, which makes most of the traditional classifiers can not performance very well. In this paper, a novel approach based on the Dynamic Feature Subset Selection and the EM algorithm with Naive Bayesian classifier integration algorithm (DSFS+EMNB) is proposed. The experimental results demonstrated that this method significantly outperforms the other methods like SVM and other traditional classification methods in terms of average accuracy, as well as generality.
This particular offers a visual logging and automatic modelling apparatus for camp distribution connection employing state-of-the-art deep learning techniques. The gadget that emerged from an interdisciplinary approac...
详细信息
This particular offers a visual logging and automatic modelling apparatus for camp distribution connection employing state-of-the-art deep learning techniques. The gadget that emerged from an interdisciplinary approach inspired by ideas related to data security, quantum computing, and environmental monitoring points to an upward trajectory in increasing the accuracy and efficiency of compassionate coordination in settings for camp distribution. Experiments on the dataset show how successfully connection modelling, anomaly detection, as well as semantic segmentation, are done to generate a more cohesive model. Its reputation is further highlighted by the corresponding study of works from various domains, which finds that it has accuracy, precision, and F1 score measurements above 0.88 per task. As a directed investigation area in non-stipulated regions turns into significant scientific research, it contributes an ever-more significant role in leading authorities through which to make some administrative efforts to optimise such research, as disciplined researchers currently have sufficient knowledge of contemporary trends. Compared to present use, the equipment is more accurate and has superior review values. The research can achieve unprecedented computing efficiency, as seen by its 12-hour setup time and processing velocity measurement of 20 milliseconds per recorded picture.
The reference wave phase was modulated with a sinusoidal vibrating mirror attached to a Piezoelectric Transducer(PZT), the integration was performed by a CCD,and the charge storage period of the CCD image sensor was o...
详细信息
The reference wave phase was modulated with a sinusoidal vibrating mirror attached to a Piezoelectric Transducer(PZT), the integration was performed by a CCD,and the charge storage period of the CCD image sensor was one-quarter period of the sinusoidal phase *** the frequency- synchronous detection technique,four images(four frames of interference pattern)were recorded during one period of the phase *** order to obtain the optimum modulation parameter,the values of amplitude and phase of the sinusoidal phase modulation were determined by considering the measurement error caused by the additive noise contained in the detected *** PZT oscillation was controlled by a closed loop control system based on PID *** ideal discrete digital sine function at 50Hz with adjustable amplitude was used to adjust the vibrating of PZT,and a digital phase shift techniques was used to adjust vibrating phase of PZT so that the phase of the modulation could reach their optimum *** CCD detector was triggered with software at *** on work above,a small coherent signal masked by the preponderant incoherent background with a CCD detector was obtained.
暂无评论