But this method is too complex compared with our method and it exhausts a long computing time . the author compiled an algorithm to accelerate convergence speed . this method has a special requirement on simulation software , so its application is limited 局部电离积分法的优点在于精确度高,但比较复杂,计算时间长,作者自己还编制了一套算法以加快收敛,对仿真软件也有特殊的要求,所以此方法的使用范围受到了限制。
The algorithm based on discrete walsh conversion is researched , and the validity of algorithm is proved . the elaborate algorithm of feedback pnn is presented . the simulation experience proved availability of the model on accelerating convergence 研究了前馈过程神经网络基于离散沃尔什变换的学习算法,证明了算法的有效性;给出了反馈型过程神经元网络详细的算法推导过程,仿真实验证明了网络加入反馈后对加速收敛的有效性。
In view of the operation characters of pmsm for ev application , a novel efficiency - optimization control strategy is presented to meet the demand of rapidity after analyzing the defect of efficiency - optimization control strategy of pmsm system with minimum input power in ordinary application . on the basis of ordinary efficiency - optimization control strategy with minimum input power , the new strategy adopts fuzzy logic control method and torque compensation strategy to accelerate convergence in process of optimizing controlled parameter 针对电动汽车的运行特点,在分析了一般应用的pmsm系统输入功率最小效率优化策略不足的基础上,为满足电动汽车用pmsm系统效率优化的快速性要求,提出新的效率优化控制策略,其核心是在输入功率最小效率优化方法基础上应用模糊逻辑控制并采用转矩补偿策略加速系统控制变量寻优过程的收敛速度。
There are two main ways that will be effective to solve the question currently : one is to improving numerical algorithm by all kinds of skills to accelerate convergence ; the other is to introducing parallel computing . in order to work out the numerical simulation of flow in naca0012 , euler equations are selected as the control equations of the flow field in this paper 目前解决问题的主要途径有两条:一是改善数值方法,利用各种收敛技术来减少计算时间;二是利用并行环境,实现软件的多机并行计算,达到大幅度降低计算时间的目的,使得某些巨型计算成为可能。