1) time-frequency domain average
时频域平均
1.
The vibration signal of rotating machineries possesses the characteristics of ergodic cycle,time-frequency domain average can deal with the cycle domain of this kind of stationary signal better and extract the characteristic signal.
试验结果表明,所提出的时频域平均方法能有效地实现齿轮箱非同步特征信号的提取。
2) time pilots-time average(TPTA) method
时域导频-时域平均方法
5) time average
时域平均
1.
In the case of inapplicability of hammering excitation to the arm of industrial robot for extracting its dynamic characteristics,according to the Duharmal integral theory and applying the specific upper triangle construction of input matrix of system as well as the technique of time average,an efficient de-noising average recursive algorithm is presented in this paper.
针对锤击激励方式不适用于工业机器人操作臂动态性能测试的情况,根据Duharm a l积分理论,利用系统输入矩阵的上三角形的特殊结构,并结合时域平均技术,导出了具有抗噪性能的高效的求取系统脉冲响应函数的平均递推算法。
6) time domain averaging
时域平均
1.
Based on the precise integration method,the time domain averaging of precise integration method (TAPIM) is developed to calculate the dynamic response of random vibration in this paper.
发展了计算结构随机振动响应的精细积分时域平均法,详细讨论了各种激励作用下系统动力响应的精细积分时域平均,并给出算例。
2.
This paper provides a detail review on the existing time domain averaging methods by analyzing the generation of phase error and the mechanism of phase accumulating error.
从时域平均中误差的产生、相位累积误差原理等方面对已有的时域平均算法进行了深入的分析,在此背景下,提出了一种可以在理论上彻底避免相位累积误差的方法——非整数时延相位补偿。
补充资料:谢时臣(1488~?)
中国明代画家。字思忠,号樗仙,吴(今江苏省苏州市)人。工山水,师法吴镇,得沈周笔意而稍变。多作长卷巨幛,峰峦雄伟。尤善画水,江河湖海,种种皆妙。笔墨纵横自如,富有气势,介乎戴进和沈周之间。唯刻画不够精微,殊少秀韵。传世作品多为水墨立轴,《溪山揽胜图》(南京博物院)绘高远山景,笔法细密苍劲,为仿王蒙之作。《策杖寻幽图》(故宫博物院)景色比较写实,用笔劲健,墨色沉郁,多用沈周画法。《武当霁雪图》(山东省博物馆)为屏幛大幅,层峦叠嶂,高耸险峻,笔墨纵横纷披,不拘成法,富有宏阔气概。《谪仙玩月图》(故宫博物院),水面浩瀚,境界开阔,山石粗放,人物精微,为较精细之作。
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