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相关概念视频

Feedback control systems01:26

Feedback control systems

273
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
273
Root Loci for Positive-Feedback Systems01:23

Root Loci for Positive-Feedback Systems

88
The Hartley oscillator is a positive feedback system that sustains oscillations by feeding the output back to the input in phase, thereby reinforcing the signal. Positive feedback systems can be viewed as negative feedback systems with inverted feedback signals. In these systems, the root locus encompasses all points on the s-plane where the angle of the system transfer function equals 360 degrees.
The construction rules for the root locus in positive feedback systems are similar to those in...
88
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

154
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
154
Routh-Hurwitz Criterion I01:15

Routh-Hurwitz Criterion I

139
Consider an electrical power grid, where stability is essential to prevent blackouts. The Routh-Hurwitz criterion is a valuable tool for assessing system stability under varying load conditions or faults. By analyzing the closed-loop transfer function, the Routh-Hurwitz criterion helps determine whether the system remains stable.
To apply the Routh-Hurwitz criterion, a Routh table is constructed. The table's rows are labeled with powers of the complex frequency variable s, starting from the...
139
PD Controller: Design01:26

PD Controller: Design

171
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
171
Controller Configurations01:22

Controller Configurations

82
Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
82

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Updated: May 28, 2025

Operation of the Collaborative Composite Manufacturing CCM System
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超混沌散列:基于具有平行反结构的2D线性交叉合图的混沌散列函数.

Hao Xing1, Rudong Min1, Shouliang Li2

  • 1School of Information Science and Engineering, Lanzhou University, Lanzhou, 730000, China.

Scientific reports
|February 14, 2025
PubMed
概括
此摘要是机器生成的。

本研究引入了一种使用二维线性交叉合超混沌图 (HF-2DLCHM) 的新哈希函数,以提高数据安全性. 新方法提供了提高的计算效率和灵活的哈希值长度,优于传统的混乱哈希函数.

关键词:
混乱的地图 混乱的地图加密系统加密系统.哈希函数 哈希函数 哈希函数信息安全信息安全.

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科学领域:

  • 密码学 密码学 密码学
  • 应用数学 应用数学 应用数学
  • 计算机科学 计算机科学

背景情况:

  • 由于非线性动态,混沌系统被用于哈希函数中.
  • 现有的混乱哈希函数面临着计算开销和固定长度输出方面的挑战.
  • 需要更灵活和高效的混乱哈希函数设计.

研究的目的:

  • 引入一个新的哈希函数,HF-2DLCHM,解决现有的混乱哈希函数的局限性.
  • 为提高安全性和性能,利用2D线性交叉合的超混沌地图.
  • 为了实现可变长度的哈希值生成,以提高灵活性.

主要方法:

  • 开发了一个基于2D线性交联超混沌图的哈希函数 (HF-2DLCHM).
  • 实现了并行反结构以提高计算效率.
  • 整合了一个反机制,以加强传播和信息混合.
  • 使用输入参数T来控制输出哈希值长度.

主要成果:

  • 与1D混乱地图相比,HF-2DLCHM表现出优越的动态复杂性,增强了对相位空间重建攻击的抵抗力.
  • 可并行结构显著提高了计算效率.
  • 反机制有效地增加了传播,从而导致更好的信息分发.
  • 该方案实现了接近理想基准的分布,混,扩散和抗碰撞特性.
  • 通过调整参数T,可以从[公式:查看文本]位获得可变哈希长度.

结论:

  • 拟议的HF-2DLCHM为数据安全和隐私保护提供了灵活,高效和安全的解决方案.
  • 它的性能特性使其成为加密应用的实用选择.
  • 这种新的方法克服了传统混乱哈希函数的局限性,为先进的安全系统铺平了道路.