We analyze theoretically the existence of precursor anomaly migration and the nonlinear variation of migration velocity.
从理论上对前兆异常迁移性的存在与迁移速率的非线性变化进行了分析。
Synergistic effects, nonlinear variation, and difficulties in discounting the future make the intellectual problem difficult, but not (in principle) insoluble.
这项智力难题因协同作用，非线性变化，和考虑将来而变得困难，但(原则上)不是不可能解决。
As to the horizon motion system of Bridge Crane is a nonlinear, variation parameter and strong coupling system, the nonlinear PID controller is used for positioning and anti-swing.
针对桥式吊车水平运动系统是一个非线性、变参数、强耦合的对象，采用非线性PID控制器进行定位和防摆控制。仿真实验结果表明，系统具有良好的动态、静态特性和强的鲁棒性。
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