简单的算法来判断微分方程-代数方程系统的等价性.
Shota Kato1, Chunpu Zhang2, Manabu Kano2
1Department of Systems Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, 606-8501, Japan. shota@human.sys.i.kyoto-u.ac.jp.
Scientific reports
|July 17, 2023
概括
本研究介绍了一种算法,以确定数学方程组是否等同. 新方法准确地识别了等价方程集,有助于理解STEM文档.
科学领域:
- 数学 数学 是一个数学.
- 计算机科学 计算机科学
- 科学文档分析科学文档分析
背景情况:
- 数学公式在科学,技术,工程和数学 (STEM) 文档中至关重要.
- 区分等效方程组对于理解复杂的STEM信息至关重要.
- 目前的工具没有能力自动评估方程组的等价性.
研究的目的:
- 开发一种新的算法来判断数学方程组的等价性.
- 为了使STEM文献中的数学内容能够自动比较和理解.
- 为机器理解方程和过程模型提供一个基本工具.
主要方法:
- 开发了一种使用计算机代数系统评估方程组等价性的算法.
- 对每个组独有的方程实施了可变消除步骤.
- 根据相同变量的相同代数解来判断个体方程的等价性.
- 确定整体组等价性,如果一个组中的所有方程与另一个组中的方程相匹配.
主要成果:
- 算法成功确定了所有50个生成的方程组对的等价性.
- 该方法在识别等效和非等效方程集方面表现出高准确度.
- 开发的算法为自动化方程组比较提供了可靠的方法.
结论:
- 拟议的算法准确地判断数学方程组的等价性.
- 这种进步有助于理解STEM文档中广泛的数学信息.
- 该方法代表了使机器能够理解复杂的数学表达式和过程模型的关键一步.
相关概念视频
Classification of Systems-II
179
Continuous-time systems have continuous input and output signals, with time measured continuously. These systems are generally defined by differential or algebraic equations. For instance, in an RC circuit, the relationship between input and output voltage is expressed through a differential equation derived from Ohm's law and the capacitor relation,
179
Relation between Mathematical Equations and Block Diagrams
442
In a spring-mass-damper system, the second-order differential equation describes the dynamic behavior of the system. When transformed into the Laplace domain under zero initial conditions, this equation can be effectively analyzed and manipulated. The transformation into the Laplace domain converts differential equations into algebraic equations, simplifying the process of isolating the output.
442
Classification of Systems-I
219
Linearity is a system property characterized by a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
219
SFG Algebra
140
In Signal Flow Graph (SFG) algebra, the value a node represents is determined by the sum of all signals entering that node. This summed value is then transmitted through every branch leaving the node, making the SFG a powerful tool for visualizing and analyzing control systems.
Each node in an SFG corresponds to a variable, and the interactions between nodes are represented by branches with associated gains. When multiple branches lead into a node, the value at that node is the sum of the...
Each node in an SFG corresponds to a variable, and the interactions between nodes are represented by branches with associated gains. When multiple branches lead into a node, the value at that node is the sum of the...
140
Second Order systems II
133
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
133
Difference Equation Solution using z-Transform
331
The z-transform is a powerful tool for analyzing practical discrete-time systems, often represented by linear difference equations. Solving a higher-order difference equation requires knowledge of the input signal and the initial conditions up to one term less than the order of the equation.
The z-transform facilitates handling delayed signals by shifting the signal in the z-domain, which corresponds to delaying the signal in the time domain, and advancing signals by similarly shifting in the...
The z-transform facilitates handling delayed signals by shifting the signal in the z-domain, which corresponds to delaying the signal in the time domain, and advancing signals by similarly shifting in the...
331


