A linear integral invariant, a universal integral invariant and an absolute integral invariant of second order of the system are obtained under the given condition.
给出系统存在积分不变量的条件，在此条件下导出系统的线性积分不变量、通用积分不变量和二阶绝对积分不变量。
We can obtain new model reference variable structure control system of second order linear reference model system with common form according to the math model of usual non-linear system.
从一般的非线性系统的数学模型出发，确定出了一般形式的二阶线性参考模型系统的新的模型参考的变结构控制系统。
The vehicle steering system is a slowly varying non-linear system, in a short time interval, its dynamic characteristics can be described by a parameter-varying second-order linear system.
汽车转向系统是一个缓慢变化的非线性系统，在一个较短的时间间隔内，可以用一个参数时变的二阶线性系统对其动力学特性进行描述。
The phenomenon of stochastic resonance of an over-damped second-order linear system driven by coupled white noise is investigated.
研究了耦合白噪声作用下的二阶过阻尼线性系统中的随机共振现象。
In this paper a new concept of phase contrail of phase plane for higher order nonlinear control system based on isoclines method of second-order linear system is proposed.
提了基于二阶线性系统等倾线法绘制相平面原理，实现了高阶非线性控制系统相平面相轨迹的作图算法。
This paper does research in the unstable second-order linear continuous system with a hysteresis nonlinear feedback.
本文对带有滞回非线性反馈的不稳定二阶线性系统进行了研究。
The phenomena of stochastic resonance of an over-damped second-order linear system with modulated dichotomous noise are investigated.
研究了系统固有频率受二值噪声扰动时，调制二值噪声驱动二阶过阻尼线性系统的随机共振现象。
In this paper, the stability of second order linear time-varying discrete system is studied.
本文对二阶离散线性时变稳定性问题进行了研究。
This article makes use of variable gradient method and structure Lyapunov Function to solve a kind of global asymptotic stability for solutions of non-linear system of the second order.
用变量梯度法构造李雅普·诺夫函数，解决一类二阶非线性系统解的全局渐近稳定性问题。
Motor system is non linear, however it can be linear approximated in an operating point. First order and second order motor model is used in the discussion.
在实际情况中电机是一个非线性的系统，但是在某一工作区间内完全可以进行线性化，本文采用一阶和二阶电机模型进行讨论。
Motor system is non linear, however it can be linear approximated in an operating point. First order and second order motor model is used in the discussion.
在实际情况中电机是一个非线性的系统，但是在某一工作区间内完全可以进行线性化，本文采用一阶和二阶电机模型进行讨论。
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