| 1. | With an intelligent acceleration signal analysis system equipped , analyzing impact responding rules become easier
配用智能加速度信号分析系统，有利于冲击响应规律的全面分析。 |
| 2. | The mallat method for processing 1 / f noise in acceleration signal is put forward , that is to choose suitable thresholds to filter 1 / f noise
在此基础上,构造1 / f噪声的模型,利用mallat算法并选取适当的阈值对加速度信号进行滤波处理,实验结果表明,该滤波方法是有效的。 |
| 3. | The bandwidth was finally expanded to 16hz . the compounding feedforward control used velocity and acceleration signals is proved very effective in improving the system performance
证明了引入速度和加速度前馈控制对有效提高系统的动态特性和进一步抑制多余力矩具有良好的效果。 |
| 4. | The dsp chip has high speed , the highly effective characteristic compared with other microprocessor . choosing proper dsp to carry on processing to the acceleration signal is a inevitable trend
Dsp芯片与一般微处理器相比,具有高速,高效的特点。选用合适的dsp对加速度信号进行处理分析成为一种必然的趋势。 |
| 5. | The result shows that when contain the transverse crack in the crankshaft , and the depth of the crack is strengthened gradually , its acceleration signal responding frequency moves toward high frequency gradually
结果表明，当曲轴中含有横向裂纹，且裂纹逐渐加深时，其响应的加速度信号在频域范围内的主频是逐渐向高频方向移动的。 |
| 6. | 4 . controlling the multi - channels of the data acquisition , digital filtering for the acceleration signal and logic operation were designed and simulated by fpga , and data acquisition was carried out by multi - channel synchronous sampling and time - sharing
4 .多路信号采集的控制、加速度信号数字滤波和逻辑运算等单元模块采用可编程逻辑器件fpga技术设计和仿真。 |
| 7. | Programmed the experiment data manager application . it can record and manager the experiment data by database , and can display the data wave . and it also can calculate the character parameter of acceleration signals
编写了实验数据管理程序，该程序可以记录实验数据、对实验数据和受试者信息进行数据库管理、可以显示加速度信号波形、可以自动提取加速度信号的特征参数。 |
| 8. | Numerical simulation signal and vibration acceleration signal of a roughing mill main drive speed reduction unit have been decomposed by using empirical mode decomposition algorithm ; each component has been carried on spectral analysis
摘要运用经验模式分解算法对数值仿真信号及某轧钢厂粗轧机主传动减速机振动加速度信号进行了分解，从而得到若干个基本模式分量，对每个模式分量进行了频谱分析。 |
| 9. | The main working procedure of the fiber - optic sensor is : the sensing element detects the acceleration signal , this signal modulates the phase of the wave , and the phase change is corresponding to the acceleration signal
该光纤加速度计的工作过程为:敏感元件感受外界的加速度信号,并把它转化成马赫-增德尔干涉仪测量臂的拉伸或压缩,从而引起测量臂中的光波相位变化,相位变化量即代表被测加速度值。 |
| 10. | In 5l chapter , the software of the system is introduced , which includes the initialization module of system , management modules of lcd and keyboard , control and output modules of the vibration , sampling and processing module of acceleration signal and module for calculating threshold
第五章完整的介绍了整个软件系统的流程，包括系统的初始化、液晶键盘的管理、振动的控制和输出、反馈信号的采集以及阈值检出算法的实现等。 |
