variation equation meaning in English
变分方程
Examples
- A variation equation problem on singular stochastic control
奇异型随机控制中的一个变分方程问题 - These phenomena can be well characterized by two or multiple stages exponent formulation . permeability variation equation and it ' s solution at three boundary conditions has got in laplace domain
建立了渗透率变异控制方程，并利用laplace变换求得了该方程三种边界条件下的的拉氏空间解析解。 - This paper discusses a variation equation problem in a class of singular stochastic control with stopping time , gives its solution under two different conditions , which is a one order continuous differentiable and concave function , and gives the exact form
摘要讨论了一类带停时的奇异型随机控制问题中的一个变分方程问题，并且在两种不同的情况下给出了该变分方程的解，即为一阶连续可导凹函数，并在两种情况下给出了此函数的具体形式。 - By analyzing the eigenvalues of linear variation equations , some algebraic criteria for the absolute stability ( independent of the delays ) are established for two special 3 - dimensional systems . also , the sufficient conditions under which the systems hold a hopf bifurcation are obtained , which are easy to verify
我们通过分析特征方程的特征根，获得了平衡点绝对稳定的代数判据，同时得到系统存在hopf分支的充分性条件，这些判据在实际中易于验证。 - An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements . the mass - flow - rate of propellant was selected as a state variant , which was estimated by employing an integral state model and ekf filter . the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations . the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit . the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process
飞行器轨道机动过程中,为跟踪、定位机动目标和干预机动控制过程,需要统计处理离散的雷达观测量实时估计推进发动机的推力,进而确定飞行器的瞬时轨道参数.本文所述算法是该工程问题的探讨和解决方案.文章建立了轨道机动过程中连续变质量运动模型和离散雷达量测模型,推进发动机的质量秒耗量作为表征推力加速度的一个近似常量,应用扩展卡尔曼滤波对离散的雷达测量数据进行顺序统计处理给出秒耗量的最小方差估计;文章详细地推导了线性化量测模型的变分方程和观测矩阵;仿真结果表明该算法能快速、准确地估计推进发动机的质量秒耗量和向机动目标施加的实际推力