CAJ | 학술논문

在分析过程中要找出对应特征多项式的所有的根是相当困难的，尤其是对于高阶算法而言。为了解决这个问题，控制领域中的Jury准则将被引入，它仅需要使用特征多项式的系数而不需要直接求解整个方程获得所有的根。因此，使用它可以简化算法的稳定性分析，2个实例验证了它的有效性。
재분석과정중요조출대응특정다항식적소유적근시상당곤난적，우기시대우고계산법이언。위료해결저개문제，공제영역중적Jury준칙장피인입，타부수요사용특정다항식적계수이불수요직접구해정개방정획득소유적근。인차，사용타가이간화산법적은정성분석，2개실례험증료타적유효성。
Stability analysis is very important for the application of finite-difference time-domain （FDTD） methods. However, to find out all roots of a characteristic polynomial in stability analysis of the FDTD methods is a very difficult task, especially for high-order accurate FDTD methods. The Jury test in automatic control theory is introduced in detail, which only uses those coefficients of the characteristic polynomial for stability analysis instead of directly solving it. Such treatment can simplify the procedure of stability analysis. The Jury test is successfully applied in stability analysis of two typical FDTD methods.