fault n. 1.过失,过错;罪过,责任。 2.缺点,缺陷,瑕疵。 3.(猎狗的)失去嗅迹。 4.【电学】故障,误差;漏电;【地质学;地理学】断层。 5.【网球】发球出界;犯规。 Faults are thick where love is thin. 〔谚语〕一朝情义淡,样样不顺眼。 fault detection 【机械工程】探伤。 The fault is his own. 这是他自己的错。 a grave fault in a theory 理论上的重大缺陷。 a fault in the machine 机械故障。 image fault 【物理学】像差,影像失真。 numerical faults 数值误差。 a fault on the right side 因祸得福。 be at fault 1. (猎犬追捕猎物等时)失去嗅迹,踌躇不前;不知所措,正在为难。 2. 出毛病,有故障。 3. = in fault (My memory is at fault . 我想不起来了)。 find fault in 看出…缺点。 find fault with 找…的岔子。 have no fault to find with 无错可寻。 hit off a fault (猎狗)闻出(曾一度错失的)嗅迹。 in fault 有过错,有责任 (Who is in fault 是谁的不是?)。 to a fault 过度,极端 (He is kind to a fault. 他过分老实)。 whip a fault out of sb. 鞭打某人使之改过。 with all faults 不保证商品没有缺点。 without fault 〔古语〕无误,确实。 vi. 1.【地质学;地理学】产生断层;有断层余迹。 2.发球出界;犯规。 3.〔方言〕责备,挑剔。 4.〔古语〕犯错误,做错。 vt. 1.找…的岔子,挑剔;〔方言〕责备。 2.【地质学;地理学】使产生断层。 3.把…做错。 He faulted my speech in two ways. 他认为我的讲话有两点不妥。 fault one's performance 表演发生失误。
The stuck - open faults are simulated concurrently based on iddt testing with the test pattern pairs generated above 利用测试生成的向量对,采用瞬态电流测试方法对开路故障进行并发故障模拟。
And through simulative experiments by pspice , the analysis of the test results for short faults , open faults and transistor parameter errors in cmos and bicmos circuits are given 并通过仿真实验,分析了动态电流检测方法对cmos与bicmos电路中短路故障、开路故障、晶体管参数错误的测试情况。
Experimental results show that more than 20 % stuck - open faults in part of is85 and iscas89 circuits can produce 2 . 5 times iddr variation , and then can be detected by iddt testing 实验结果表明,电路中相当一部分故障是i _ ( ddt )可测的。并与以前的自动测试产生算法做了比较,此算法稳定性好、速度快且可测性测度值好。
In application , the test system which is established by the bst controller can test stuck - at faults , open faults and short faults on board , and gives some detail informations 在实际应用中,利用边界扫描控制器构造的测试系统能够实现对电路板的呆滞、开路和短路故障进行有效的检测和诊断,并可提供比较详细的故障诊断信息。
One is hard fault , which means the stuck - open fault and the bridge fault ; another is soft fault , which refers to the component parameters going beyond the preassumed perfomance range . usually , these faults do not lead to a total failure of equipments 一类称之为硬故障,指元件的开路和短路失效故障,另一类称之为软故障,指元件的参数超出预定的容差范围,一般它们均未使设备完全失效。
The stuck - open fault is simulated concurrently using iddt testing with the test pattern pairs generated above . through detaching a pattern pair into two independent patterns , the stuck - at fault are simulated concurrently . simulation results show better fault coverage . the 最后,针对iddt测试的可行性,我们通过利用pspice软件对s208电路中的一些故障做了模拟,这些故障包括开路故障和延时故障。
Based on the analysis and research on fan algorithm , an iddt test pattern generation algorithm for stuck - open faults is present . in the case of ignoring hazards , for the stuck - open faults in cmos circuits , the feasibility of transient current test generation based on fan algorithm is discussed 本文采用启发式搜索的方法,基于对fan算法的分析,在不考虑冒险的情况下对于cmos电路中的开路故障,探讨了利用fan算法进行瞬态电流测试生成的可能性。
There is great change of negative current component when it happens the line - open fault . it is marked as the occurrence of the fault . and it can be concluded the phase characteristic of negative current in the line . in the transient course , there are plenty of harmonics in the fault line . through the transient analysis , it is drawed that the amplitude of each harmonic in fault phase is greater than other phases . harmonic current in fault line is far greater than other normal lines 发生断线故障以后,线路中会出现负序电流的突变,可以作为故障启动判断的标志,并且通过分析得出了故障时负序基波电流的相位特点。在故障暂态过程中,故障电流中含有大量丰富的谐波成分,各次谐波在故障期间有突变,并且衰减很快。
For the convenience of test , varied circuit chip defects caused by the production process are abstracted as all kinds of models . at present the commonly used fault models mainly consist of stuck - at fault , stuck - open fault , bridge fault , store fault , delay fault , etc . testing methods based on voltage testing mainly aim at stuck - at fault model and have also obtained satisfactory result in research for many years . bridge fault is tested easily by quiescent power supply current ( iddq ) testing method . in regard to stuck - open fault that is difficult to testd by quiescent power supply current ( iddq ) and voltage testing , it can is tested by the dynamic current ( iddt ) testing 为了便于测试,我们将生产过程中集成电路出现的多种多样的缺陷抽象为各种模型。目前常用的故障模型主要有:固定故障,开路故障,桥接故障,存储故障,时滞故障等。电压测试主要针对固定型故障模型,多年的研究也取得了令人满意的结果; cmos电路中的桥接故障则宜用稳态电流测试方法( iddq )测试;对于电压和稳态电流难以测试的开路故障,可以使用瞬态电流测试( iddt )的方法进行测试。