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Successive Over Relaxation Calculator

Free online successive over relaxation calculator. Enter your values and get instant results with the formula, step-by-step working, a worked example and FAQs — everything runs locally in your browser on Calcton, no signup required.

中文版:SOR 松弛迭代计算器

Successive Over Relaxation Calculator
系数矩阵 A(分号分行,逗号分列,2 阶到 8 阶)
右端向量 b(逗号分隔)
松弛因子 ω(0 到 3;1 = 高斯-赛德尔)

原理:SOR(逐次超松弛)在高斯-赛德尔步与旧值之间做加权平均 x⁽ᵏ⁺¹⁾ = (1 − ω)x⁽ᵏ⁾ + ω·GS 步;ω = 1 退化为高斯-赛德尔,ω < 1 叫低松弛(更稳更慢),1 < ω < 2 叫超松弛(通常更快),ω ≥ 2 对任何矩阵都发散。

步骤:① 输入矩阵与右端向量;② 设定 ω;③ 对比不同 ω 下的轮数,找经验最优值。

示例:对 A = [[4, 1, 0], [1, 5, 1], [0, 1, 4]]、b = [6, 14, 14],ω = 1 时与高斯-赛德尔完全一致,ω = 1.2 时 17 轮收敛到 10⁻¹⁰,而 ω = 2.1 会数值发散——Ostrowski-Reich 定理的现场演示。

注意事项:最优 ω ≈ 2/(1 + √(1 − ρ²))(ρ 为雅可比谱半径),但依赖未知量 ρ,实践中靠试算;本矩阵本身收敛很快,超松弛收益小——SOR 的威力在大型差分方程系数阵上。

相关:高斯-赛德尔计算器是 ω = 1 的特例;雅可比计算器给出谱半径的参照;共轭梯度类方法在大规模问题上常优于 SOR。

How to use the Successive Over Relaxation Calculator

  1. Fill in the inputs with your own numbers — every field shows what it expects.
  2. The result updates instantly as you type; no "Calculate" click needed.
  3. Read the result card for the main figure, the step-by-step formula, and practical notes.

Frequently asked questions

Is the Successive Over Relaxation Calculator free?

Yes — all math calculators on Calcton are free, with no sign-up required. Your inputs are processed in your browser and never sent to a server.

Is there a Chinese version of this tool?

Yes. Use the Chinese version link above — it is the same calculator with the interface in Simplified Chinese.

References

Formulas and benchmarks used by this calculator follow these published sources.

  1. dlmf.nist.gov
  2. mathworld.wolfram.com
Kevin's profile

KevinContent LeadCalcton Editorial Team · Last updated 2026-10-04

Kevin maintains Calcton's formula verification and content: every calculator cites the standard it implements, worked examples are recomputed programmatically, and health benchmarks follow WHO and international guidelines.

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