Intelligent Robust Control of Roadheader Based on Disturbance Observer by Shuo Wang, Dongjie Wang, Aixiang Ma, Xihao Yan, Sihai Zhao

“…First, the working conditions of the cutting section were analyzed, and a mathematical model was established. Then, a high-gain disturbance observer was designed based on the system model to analyze cutting loads and compensate for uncertainties and disturbances. …”
Get full text

Algorithm of underdetermined convolutive blind source separation for high reverberation environment by Yuan XIE, Tao1 ZOU, Weijun SUN, Shengli XIE

“…To separate the underdetermined convolutive mixture signals in the high reverberation environment, a novel algorithm of underdetermined convolutive blind source separation was proposed.Aiming at the influence of high reverberation environment, a global impulse response network was designed to weaken reverberation echo, improving signal quality.A new mathematical model of time-frequency mixing signals was established based on the global impulse response network.The global impulse response matrix which shortened the length of the traditional impulse response, reduced the approximation error of model transformation caused by high reverberation.The real-time update learning rules of model parameters were designed based on the theory of nonnegative matrix factorization, and the source signal separation problem was converted into the model parameter optimization problem, achieving blind source separation of mixing signals.Experimental results show that the proposed algorithm can effectively realize the blind source separation of Chinese and English speech and music signals, and the comparision with existing popular algorithms verified the superiority of the proposed algorithm.…”
Get full text

Modelling the Effect of SPION Size in a Stent Assisted Magnetic Drug Targeting System with Interparticle Interactions by Adil Mardinoglu, P. J. Cregg

“…Here, we develop a mathematical model for studying the interactions between the MDCPs enriched with three different diameters of SPIONs (6.6, 11.6, and 17.8 nm) in the MDT system with an implanted magnetizable stent using different magnetic field strengths and blood velocities. …”
Get full text

Hydrodynamic Numerical Simulation of the Sipaikou Reach of the Yellow River in Ningxia Based on MIKE 3 by LIU Xin, LI Chunguang, LAN Bin, HUANG Chuanji, HE Jinsha

“…In order to study the flow of the 4.530 km reach under the influence of the spur dikesafter the Sipaikoureach of the Yellow River in Ningxia runs under the “curve cut-off” project,and provide decision-making references and suggestions for the safe and stable operation of theproject,aiming at the unique terrain and geomorphological features of the reach, this paperconstructs a three-dimensional hydrodynamic mathematical model of Sipaikou with the help of MIKE 3software, and verifies the applicability and correctness of the built model with the hydrologicaldata measured on site in July 18. …”
Get full text

A Methodical Approach to Design and Valuation of Weather Derivatives in Agriculture by Jindrich Spicka, Jiri Hnilica

“…Design and valuation of the weather derivatives is an interdisciplinary approach covering agrometeorology, statistics, mathematical modeling, and financial and risk management. …”
Get full text

Redesign of Conjugate Cam of Rotation Variable Speed Mechanism of Electronic Dobby by Zhang Yuanhua, Gou Xiangfeng, Chen Xiaofang, Wang Zonglu

“…From the angle of the kinematics design,based on the theoretically derivate conjugate cam contour line of mathematic model,the conjugate cam curve equation is redesigned,the equation is solved numerically and the theoretical conjugate cam contour curve is reached out. …”
Get full text

A State Feedback Controller Based on GCC Algorithm against Wind-Induced Motion for High-Rise Buildings with Parametric Uncertainties by Zuohua Li, Chaojun Chen, Jun Teng, Junkai Dong, Beichun Lin

“…High-rise buildings with an active mass damper/driver (AMD) system generally use a simplified mathematical model. The result leads to parametric uncertainties including the stiffness and mass variations exist, and the accuracy of its controller is seriously affected. …”
Get full text

Modeling and Simulation of Control Actuation System with Fuzzy-PID Logic Controlled Brushless Motor Drives for Missiles Glider Applications by Murali Muniraj, Ramaswamy Arulmozhiyal

“…The proposed system will realize better rise time and less overshoot while operating in extreme nonlinear dynamic system conditions. A mathematical model of BLDC motor is derived in state space form. …”
Get full text

A plantwide control proposal for ethylbenzene production by Victor Dias Veloso, Anamaria de Oliveira Cardoso

“… In the present article, a plantwide control structure is proposed for the benzene alkylation process. The mathematical model used in the simulations developed in scilab free software, version 6.1, was based on previous studies. …”
Get full text

Collision detection method for anchor digging machine water drilling rig by Zhi-xiang Liu, Shu-tong Yan, Kang Zou, Miao Xie

“…At the same time, combined with bounding box collision detection technology, the key parts of the equipment are mathematically modeled. A method for collision detection of onboard water exploration and drainage drilling rig of anchor digging machine is proposed. …”
Get full text

Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion by Xiaolei Du, Ming Li

“…First, we consider the effects of mass unbalance and heaving motion and propose a mathematical model of the marine rotating mechanical system with airbag vibration isolation. …”
Get full text

Trajectory Control Algorithm for Open Inner Box Nine-bar Two-DOF Mechanism by Yin Mengjuan Nie Songhui Cao Zheng

“…Taking the medicine box with nine-barrel two-degree-of-freedom mechanism as the study object, it is transformed into two kinds of eight-degree single degrees of freedom mechanism, the mathematical model of motion analysis is established.Through the kinematics simulation analysis, the motion regions of two eight-bar single degree of freedom mechanism are obtained, and the trajectory and range of motion of the nine-bar two degree of freedom mechanism are obtained. …”
Get full text

Forest defoliation scenarios by Glenn Ledder

“…We consider the mathematical model originally created by Ludwig, Jones, and Holling to model the infestation of spruce forests in New Brunswick by the spruce budworm. …”
Get full text

Optimization Design of Multi Station Rotary Automatic Turning and Resetting Mechanism by Zhao Haiming, Zhang Linlin, Liao Xiaole

“…Each working station is composed of a crank slider mechanism,the displacement of the slider is controlled by the change of the cam curve which drives the rotation of the crank and completes the turning of the working station.The mathematical model of this mechanism is established,through the variation of the design parameters can meet the requirements of different engineering requirements. …”
Get full text

On a Unique Solution of the Stochastic Functional Equation Arising in Gambling Theory and Human Learning Process by Ali Turab, Awad A. Bakery, O. M. Kalthum S. K. Mohamed, Wajahat Ali

“…The goal of this paper is to look at the subject’s actions in such situations and provide a mathematical model that is appropriate for it. The existence of a unique solution to the suggested human learning model is examined using relevant fixed point results.…”
Get full text

Research of the Coupled Torsional Stiffness of Cycloid Ball Planetary Transmission by An Zijun, Yang Ronggang, Xu Hewei

“…The model of force analysis and mathematical model are established,the expression of elastic rotation angle parameter is obtained. …”
Get full text

Modeling and Analysis of Dynamic Social Ties in D2D Collaborative Video Transmission by Qi Zhang, Zufan Zhang, Tian Zeng, Xiaoke Li

“…Specifically, a stochastic mathematical model is established and analyzed, in which the combined effect of many factors such as interest, geographical position, career, social class, value system, and interaction is considered. …”
Get full text

Chemical Potential-Based Modeling of Shale Gas Transport by Jisheng Kou, Lingyun Chen, Amgad Salama, Jianchao Cai

“…In this paper, a new mathematical model of gas flow in shale formations is proposed, which uses gas density instead of pressure as the primary variable. …”
Get full text

Integrated Scheduling Optimization for Multi-Line Production and Transportation of Prefabricated Components Considering Shared Resources by Yiran Dan, Chengshuang Sun, Qianmai Luo

“…With on-time delivery and lower costs as the goals, a scheduling optimization mathematical model is established for this scenario. This article adopts the genetic algorithm to design the solution algorithm for this model, and the effectiveness of the model and algorithm is verified through an example. …”
Get full text

Model Value of Taiji Curve Algorithm in Economic Geographic and Natural Game Management Information System by Chengqi Xu, Kegong Chen

“…In order to study the role of tai chi curve algorithm in economic geography and natural ecological management and explore the application value of tai chi curve algorithm and its model, this study discusses the principle of Chinese tai chi diagram, using mathematical model construction method by the previous tai chi map and Pythagoras theorem clever results, produced the tai chi graph s curve algorithm, and discusses the application value of tai chi curve algorithm and its model from different angles; this study takes Zhangye geography as an example, which provides an applied research direction for the future scientific research of Chinese economic geography and also provides a clever connection with ecological correlation and nature; finally, it is found that the Taiji graph s curve algorithm can calculate the corresponding Yin and Yang values according to the balance point and relative deviation amount of the attribute state, and the results have an extraordinary influence in economic geography, information management system, natural ecology, and other aspects.…”
Get full text