实时子步积分算法的设计与实现  

Design and realization of real-time substep integral algorithm

作　　者：王宇[1] 孙永维[2] 宋省身[3] 史云龙[4] 

机构地区：[1]空军航空大学军事仿真技术研究所,吉林长春130022 [2]空军航空大学飞训基地,吉林长春130062 [3]空军航空大学航空航天情报系,吉林长春130022 [4]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《电子设计工程》2013年第8期53-57,共5页Electronic Design Engineering

摘　　要：积分算法是实时仿真的关键所在,传统的单步法结构简单,但精度较差。而多步高阶积分算法虽然精度高,却由于结构复杂实时性不强。文章在对实时仿真积分算法研究的基础上,提出了实时子步积分算法,使不同的积分算法拥有相同的子步控制结构。由于每个子步的运算量一样,所以在步长和帧数一致的情况下,不同的积分算法运算时间是一致的。经仿真实验表明,该算法的子步结构显著提高了多步积分法的实时性,且误差精度在可控范围内。Abstract： The integral algorithm is the key point in real-time simulation, and traditional single-step algorithms is simple, but the accuracy is poor. The multi-step high order integral algorithms have high accuracy, but the complicated structure make poor real-time nature. Based on integral algorithms for real-time simulation, this paper put forward the real-time substep integral algorithms, to make different integral algorithms has the same substep control structure. For every substep has the same calculations, different integral algorithms have the same runtime under the same step length and frame number. Experiments show that the substep control structure significantly enhances the timeliness of Multi-step integral algorithms, and the error precision is under control.

关 键 词：计算机仿真 实时性 子步积分算法 子步控制结构 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]