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| 串联超前校正的Matlab系统性能分析与模型预测。定义了性能指标参数的物理意义，指出影响系统性能的主要参数。对Matlab中的阶跃响应、Nyquist图、Nichols图的调用格式进行了解释。利用编程语言对幅频特性法和补偿相角法计算的超前校正参数进行求解，用频域分析法分析了校正后的系统稳定性。使用simulink模块对校正前后的模型进行仿真，得出阶跃响应曲线。利用ltiview工具箱对校正前后的阶跃响应进行了数值分析。利用SISO Design tool工具箱绘制了待校正系统和校正后系统的根轨迹，利用根轨迹对超调量和开环增益进行了数据拟合，提出了一种时间常数和分度系数与超调量关系的数学模型。 |
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baoqiang133 
捐助贵宾 (小有名气)
高级翻译
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爱与雨下: 金币+1 2016-12-10 18:04:52
北河三撒: 金币+240, 翻译EPI+1 2016-12-11 12:59:22
爱与雨下: 金币+1 2016-12-10 18:04:52
北河三撒: 金币+240, 翻译EPI+1 2016-12-11 12:59:22
| Performance Analysis and Model Prediction for the Matlab System of Series Lead Correction The paper first defines the physical significance of the performance index parameters and points out the major parameters that influence the system performance. Next, the calling modes of step responses in Matlab, Nyquist diagrams, and Nichols diagrams are explained. The lead correction parameters computed with the amplitude-frequency characteristic method and the compensation phase angle method based on programming language are solved. The corrected system stability is analyzed with the frequency-domain analysis method. The models before and after correction are simulated using the simulink module to obtain the step response curve. A numerical analysis is conducted for the step responses before and after correction using the ltiview toolkit. Finally, based on the plotting of root locus of the system to be corrected and the corrected system using the SISO Design tool toolkit and the data fitting of overshoot and open-loop gain using the root locus, the paper proposes a mathematical model of the relationship between the time constant and the division coefficient, and the overshoot. |
2楼2016-12-04 20:15:51
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