基于5G的MEC系统资源分配方法

为了保证边缘计算技术（Mobile Edge Computing,MEC）系统的均衡性,引进了5G技术。以某MEC系统为例,开展了资源分配方法的设计。首先,计算MEC系统网络场景信道之间的增益值,构建基于5G移动通信技术的MEC系统网络场景信道模型;其次,设定系统服务器正在本地计算资源的调度与分配,计算系统分配资源时的能耗与MEC系统资源分配时延;最后,考虑MEC系统在运行过程中受以太网主链侧计算资源与任务时延的约束,因此要合理化分配系统资源,采用建立目标函数的方式,优化系统能耗迁移与资源分配。由于设计的资源分配方法实际应用效果良好,证明了该方法可以提高资源分配后MEC系统的均衡性,为用户提供更加优质的上网服务。     

基于Matlab有限长液体动压滑动轴承压力分布的一种近似解法

采用近似方法模拟径向滑动轴承压力场分布。在轴承径向和周向以三角函数为基函数构造压力P的二维三角级数形式；应用迦辽金法，建立关于系数αij的线性非齐次代数方程组；采用Matlab软件解此方程组，得到各系数，进而得到近似油膜压力分布函数p（φ，z）。计算出各点压力值，绘制压力分布图像。     

热连轧机厚度设定与控制系统分析

本文介绍１７００ｍｍ热连轧机一种厚度、轧制压力的预设定方法和厚度控制系统。通过对该系统分析，证明系统与动态设定型一致，同时具有自己的特点．这对设计和改造热连轧机控制具有实际意义．     

Stabilization of Networked Control Systems Using a Mixed-Mode Based Switched Delay System Method

The phenomenon of mixed-mode is one of the most important characteristics of switched delay systems. If a networked control system (NCS) with network induced delays and packet dropouts (NIDs & PDs) is recast as a switched delay system, it is imperative to consider the effects of mixed-modes in the stability analysis for an NCS. In this paper, with the help of the interpolatory quadrature formula and the average dwell time method, stabilization of NCSs using a mixed-mode based switched delay system method is investigated based on a novel constructed Lyapunov-Krasovskii functional. With the Finsler's lemma, new exponential stabilizability conditions with less conservativeness are given for the NCS. Finally, an illustrative example is provided to verify the effectiveness of the developed results.      

一种基于逆系统方法的化学反应器改进控制方案

对具有非线性动态特性的连续搅拌釜式化学反应器，按逆系统方法设计了控制器，并与分步变换设计法进行比较。仿真结果表明，采用逆系统方法可以使闭环系统取得更优的品质，这对于化工工业过程的控制具有明显的工程实践意义。     

ROCO: Using a Solid State Drive Cache to Improve the Performance of a Host-Aware Shingled Magnetic Recording Drive

Journal of Computer Science and Technology - Shingled magnetic recording (SMR) can effectively increase the capacity of hard disk drives (HDDs). Hostaware SMR (HA-SMR) is expected to be more...     

网络控制系统T-S模型的建立--基于非线性最小二乘估计法

对具有时滞的不确定非线性离散网络闭环系统的建模方法进行了探讨,提出了一种基于非线性最小二乘估计的T-S模糊模型的建立方法,仿真结果验证了该建模方法的有效性。     

基于周期控制的有限集输入通道任意增益/相角裕度调节方法

针对有限多输入多输出(MIMO)线性时不变(LTI)对象集,提出了一种调节输入通道增益/相角裕度的方法,采用离散线性二次调节器(LQR)理论和周期控制方法设计一个针对有限对象集的线性周期控制器.该控制器可使有限对象集的所有反馈控制回路在输入通道同时实现任意大的增益裕度和直到90°的相角裕度.仿真结果表明了该方法的有效性.     

Super‐Twisting Observer‐Based Integral Sliding Mode Control for Tracking the Rapid Acceleration of a Piston in a Hybrid Electro‐Hydraulic and Pneumatic System

A new hybrid electro‐hydraulic and pneumatic actuator system and its dynamic model for high‐performance control are presented. This work focuses on tracking control of rapidly changing acceleration that is an advanced area with various practical applications in industries. The impact motion control of the actuator is one of challenging task due to the system instability during the transition state. Since composite disturbances derived from the inaccurate and unmodeled dynamics considerably reduce the control performance. A novel structure of variable integral sliding mode controls integrated with a sliding mode disturbance observer is proposed based on the super‐twisting algorithm. With the control strategy, not only does the controller overcome the extreme sensitivity of the system during rapid movements, but it also eliminates the internal parameter uncertainties and external load disturbance while tracking rapid gain‐scheduled acceleration. The results of the numerical simulation and field experiment are presented to assess the effectiveness of the proposed control scheme.