| 1. | Positive solutions of boundary value problems of some singular second order systems
一类奇异二阶系统边值问题的正解 |
| 2. | Existence of two positive solutions to boundary value problems of second order systems
二阶微分方程组边值问题2个正解的存在性 |
| 3. | Method and its application of dynamic weighing for automobile based on second order system
基于二阶系统的动态汽车衡称重方法及应用 |
| 4. | Existence of periodic solutions for a class of second order systems with sublinear nonlinearity
一类带有次线性非线性项的二阶系统周期解的存在性 |
| 5. | Existence of periodic solutions with saddle point characteristics for some non - autonomous second order systems
某类非自治二阶系统具鞍点特征的周期解的存在性 |
| 6. | The global attractor of the sine - gordon type nonlinear second order system under nonhomogeneous boundary condition and the stabilizability
型二阶非线性系统的全局吸引子及能稳性 |
| 7. | Comparing fuzzy control with optimal control , it is found that the fuzzy control of a class of second order systems is actually a near - optimal control
通过二阶系统的模糊控制和时间最优控制的对比发现，一类二阶系统或可近似为二阶系统的模糊控制实际上是对二阶系统最优控制的一种近似。 |
| 8. | The simulation results show that this method is effective and successful with strong robustness , and can also be used to some other linear or nonlinear second order systems
理论分析和仿真表明，这种基于时间最优控制的非线性设计方法具有很好的控制效果和鲁棒性，适用于一类二阶系统的控制。 |
| 9. | Uniaxial motion , fixed - axis rotation ; first and second order systems ; natural and forced response ; transfer functions , zeroes , poles ; elementary control : open - loop , closed - loop ; closing the loop alters the natural and forced response characteristics ; stability and instability
003单轴运动，固定轴的转动，一阶与二阶系统，自然与强迫响应；转移函数，零点，极点；基本控制：开回路，闭回路；回授对自然与强迫响应特性之改变；稳定与不稳定。 |
| 10. | The working principles are as follows : when the factors of the second order mechanics model are proper , the relative displacement , body to shell , is linear to the acceleration of shell . so the acceleration of the second order system is measured by measuring the relative displacement with the optical reflection displacement theory
其工作原理是：当二阶力学模型的参数选择适当时，力学模型中的质量块相对外壳的相对位移与外壳的加速度近似成线性关系，所以采用光纤反射式位移传感原理测量二阶力学模型中的相对位移就可以达到测量二阶系统加速度的目的。 |
