基于嵌入优化的铣削去重平衡机电气测量系统研究

目前铣削去重平衡机电气测量系统是由微控制器和外围器件级联而成,集成度低、信号处理算法单一、测量误差大,对实现智能铣削有很大的限制。基于此,提出了基于嵌入式OMAP的自动铣削去重平衡机电气测量系统的实现方法。首先,通过OMAP双核架构中的ARM子系统完成对平衡机电气测量系统的控制功能,DSP子系统实现数字信号处理和不平衡量的解算;其次设计实现了基于谐波小波包的数字带通跟踪滤波器;最后利用谐波小波包在频域对信号进行无限细分的特性来提取任意一段微弱信号的特征。仿真及测试结果表明,该系统有效抑制了近频信号干扰,提高了信噪比,并对初始不平衡信号特征实现有效还原。

Electrical Measurement System in Milling Balance Machine Based on Embedded Optimization

Electrical measurement system in milling balance machine currently consists of microcontroller and peripheral devices. The structure has the problems which include low integration, single signal processing algorithms and great measurement error. Therefore, electrical measurement system in milling balance machine based on embedded optimiza-tion is presented in the paper. Firstly,the device control electrical measuring system by ARM subsystem of OMAP du-al-core architecture, and DSP subsystem realizes digital signal processing and unbalance computing. Secondly, the sys-tem implement digital band-pass tracking filter based on harmonic wavelet packet. Thirdly,the system extracts any pe-riod of weak signal characteristics using the unlimited segmentation features harmonic for wavelet packet signal in the frequency domain. Simulation and test results show that the system effectively inhibits nearly frequency signal interfer-ence,improves signal to noise ratio,and reduces the initial imbalance signal characteristics.