Abs Root-MUSIC （MUltiple Signal Classification） is the polynomial rooting form of MUSIC, namely, the spectrum peak searching is resplaced by the polynomial rooting in MUSIC implementation. The coefficients finding o...Abs Root-MUSIC （MUltiple Signal Classification） is the polynomial rooting form of MUSIC, namely, the spectrum peak searching is resplaced by the polynomial rooting in MUSIC implementation. The coefficients finding of the polynomial is the critical problem for Root-MUSIC and its improvements By analyzing the Root-MUSIC algorithm thoughly, the finding method of the polynomial coefficient is deduced and the concrete calculation formula is given, so that the speed of polynomial finding roots will get the bigger exaltation. The particular simulations are given and attest correctness of the theory analysis and also indicate that the proposed algorithm has preferable estimating performance.展开更多
为了明确高压共轨柴油机电控单元(electronic control unit,ECU)硬件在环(hardware-inthe-loop,HIL)系统I/O数据流特性以及减少系统开发时间和成本,提出了基于现场可编程门阵列(field-programmablegatearray,FPGA)技术与自制负载板相结...为了明确高压共轨柴油机电控单元(electronic control unit,ECU)硬件在环(hardware-inthe-loop,HIL)系统I/O数据流特性以及减少系统开发时间和成本,提出了基于现场可编程门阵列(field-programmablegatearray,FPGA)技术与自制负载板相结合的高压共轨柴油机ECU硬件在环系统方案,并利用LabVIEW FPGA模块开发了HIL系统可重配置I/O,通过分析FPGA底层传感器信号输出和执行器信号输入的I/O特征,设计了底层各I/O模块程序;结合基于AVL/CRUISEM搭建的D30柴油机实时仿真模型,在上位机中利用LabVIEW模拟传感器信号I/O模块和模型信号I/O模块.实验结果表明,HIL系统I/O设计合理,可重配置I/O设备的输出I/O能参数化模拟发动机的传感器信号,输入I/O能成功识别执行器反馈信号,并通过模型信号I/O输入至模型中,从而实现柴油机仿真模型和ECU的闭环控制并证实了系统方案的可行性.展开更多
基金Supported by the National Outstanding Young Foundation (No.60825104)the National Natural Science Foundation of China (No.60736009)
文摘Abs Root-MUSIC （MUltiple Signal Classification） is the polynomial rooting form of MUSIC, namely, the spectrum peak searching is resplaced by the polynomial rooting in MUSIC implementation. The coefficients finding of the polynomial is the critical problem for Root-MUSIC and its improvements By analyzing the Root-MUSIC algorithm thoughly, the finding method of the polynomial coefficient is deduced and the concrete calculation formula is given, so that the speed of polynomial finding roots will get the bigger exaltation. The particular simulations are given and attest correctness of the theory analysis and also indicate that the proposed algorithm has preferable estimating performance.
文摘为了明确高压共轨柴油机电控单元(electronic control unit,ECU)硬件在环(hardware-inthe-loop,HIL)系统I/O数据流特性以及减少系统开发时间和成本,提出了基于现场可编程门阵列(field-programmablegatearray,FPGA)技术与自制负载板相结合的高压共轨柴油机ECU硬件在环系统方案,并利用LabVIEW FPGA模块开发了HIL系统可重配置I/O,通过分析FPGA底层传感器信号输出和执行器信号输入的I/O特征,设计了底层各I/O模块程序;结合基于AVL/CRUISEM搭建的D30柴油机实时仿真模型,在上位机中利用LabVIEW模拟传感器信号I/O模块和模型信号I/O模块.实验结果表明,HIL系统I/O设计合理,可重配置I/O设备的输出I/O能参数化模拟发动机的传感器信号,输入I/O能成功识别执行器反馈信号,并通过模型信号I/O输入至模型中,从而实现柴油机仿真模型和ECU的闭环控制并证实了系统方案的可行性.
