Chaotic Signal Design for Frequency Domain Identification
(0) System identification usually is the first step to understand control system and to design controllers, especially where performance matters, such as high speed and high precision motion control system. Theoretically, there are certain conditions of the excitation signals. For example, the white noise is one such type of signal. However, some modes are not allowed to be excited in practice. On the other side, the input signal to the mechatronic system contains no high frequency harmonic components at the working mode. So it is of its differential. Based on these observations, a particular class of chaotic signal is proposed as the excitation signal for identification experiments. The model of the system is obtained by least squares method. The simulation and experimental results show that such chaotic signal can be applied to mechatronic system safely. Further, the identified model can approximate the model of the system, especially on the frequency range of concerned.
Frequency domain identification Excitation signal design Chaotic signal
LI Jiangang TAN Zhihong ZHANG Dongjun
Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, P. R. China Peking-HKUST Shenzhen Institute, Shenzhen 518055, P. R. China
国际会议
The 31st Chinese Control Conference(第三十一届中国控制会议)
合肥
英文
1733-1738
2012-07-01（万方平台首次上网日期，不代表论文的发表时间）