嵌入式时栅传感器高精度激励设计
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摘要
介绍了嵌入式时栅传感器的基本原理,分析了两相激励信号不一致性主要是幅值不等和相位不正交对传感器测量精度的影响。基于DDS原理结合反馈控制设计了高精度的激励信号模块,采用反馈电路控制可程控放大电路调理两相信号幅值,实现了激励信号的幅值相等,基于闭环反馈控制直接修改数字激励信号实现了信号的相位正交。实验研究结果表明,采用这种闭环控制的方法,传感器短周期测角误差从±65″降低到±16″左右,常值误差基本消除,传感器精度大幅度提高。
The basic principle of embedded time grating sensor was introduced,and the influence of accuracycaused by two excitation signals with variable amplitudes and non-orthogonal phases was analyzed. Based on DDSand feedback control the excitation signal generator with high precision was designed. The programmable-gain am-plifier was used to modulate the amplitude of two excitation signals,which achieved equal amplitude,and the orthog-onal signals were realized through the feedback control method. The experimental results show that the short-perioderror has been reduced from ±65″ to ±16″,and the constant error has been basically eliminated by using this closedloop control method. The accuracy of the sensor have been greatly improved.
The basic principle of embedded time grating sensor was introduced,and the influence of accuracycaused by two excitation signals with variable amplitudes and non-orthogonal phases was analyzed. Based on DDSand feedback control the excitation signal generator with high precision was designed. The programmable-gain am-plifier was used to modulate the amplitude of two excitation signals,which achieved equal amplitude,and the orthog-onal signals were realized through the feedback control method. The experimental results show that the short-perioderror has been reduced from ±65″ to ±16″,and the constant error has been basically eliminated by using this closedloop control method. The accuracy of the sensor have been greatly improved.
引文
[1]孙世政,彭东林,付敏,等.提高嵌入式时栅传感器精度的测头设计方法[J].仪器仪表学报,2015,36(1):26-31.
[2]彭东林,李彦,付敏,等.用于极端和特殊条件下机械传动误差检测的寄生式时栅研究[J].仪器仪表学报,2013,34(2):359-365.
[3]武亮,陈锡候,王阳阳.磁导调制型时栅位移传感器测量方法研究[J].传感技术学报,2014,27(8):1043-1048.
[4]杨伟,彭东林,朱革,等.基于变耦合系数变压器原理的时栅位移传感器设计[J].仪器仪表学报,2006,27(11):1403-1405.
[5]陈平,罗晶,王毅,等.反馈控制感应同步器双相激磁电源研究[J].中国惯性技术学报,1997,5(1):54-57.
[6]谢仁飚,张明涛,刘银年,等.正弦波脉冲调制在空间用感应同步器驱动技术中的应[J].测试技术学报,2009,23(1):74-77.
[7]何海龙,刘世挺,高栋.基于正弦脉冲宽度调制SPWM的旋转变压器激磁电路[P].中国专利,101567658.2009-10-28.
[8]介党阳,倪风雷,顾义坤,等.旋转变压器的励磁电源电路[P].中国专利,101714821A.2010-05-26.
[9]Hwang S H,Kim H J,Kim J M,et al.Compensation of Amplitude Imbalance and Imperfect Quadrature in Resolver Signals for PMSM Drives[J].IEEE Transactions on Industry Applications,2011,47(1):134-143.
[10]Hanselman D C.Resolver Signal Requirements for High Accuracy Resolver-to-Digital Conversion[J].IEEE Trans on Industrial Electronics,1990,37(6),556-561.
[11]Du Chunyang,Yang Guijie.Error Analysis and Compensation for Inductosynbased Position Measuring System[R].38thIndustry Applications Conference Annual Meeting,2003,1:6-10.
[12]刘小康,彭凯,王先全,等.纳米时栅位移传感器的理论模型与误差分析[J].仪器仪表学报,2014,35(5):1136-1142.
[13]王先全,雷毅谈,张虹光,等.基于DSP的时栅位移传感器误差在线处理与系统设计[J].传感技术学报,2014,27(8):1054-1059.
[2]彭东林,李彦,付敏,等.用于极端和特殊条件下机械传动误差检测的寄生式时栅研究[J].仪器仪表学报,2013,34(2):359-365.
[3]武亮,陈锡候,王阳阳.磁导调制型时栅位移传感器测量方法研究[J].传感技术学报,2014,27(8):1043-1048.
[4]杨伟,彭东林,朱革,等.基于变耦合系数变压器原理的时栅位移传感器设计[J].仪器仪表学报,2006,27(11):1403-1405.
[5]陈平,罗晶,王毅,等.反馈控制感应同步器双相激磁电源研究[J].中国惯性技术学报,1997,5(1):54-57.
[6]谢仁飚,张明涛,刘银年,等.正弦波脉冲调制在空间用感应同步器驱动技术中的应[J].测试技术学报,2009,23(1):74-77.
[7]何海龙,刘世挺,高栋.基于正弦脉冲宽度调制SPWM的旋转变压器激磁电路[P].中国专利,101567658.2009-10-28.
[8]介党阳,倪风雷,顾义坤,等.旋转变压器的励磁电源电路[P].中国专利,101714821A.2010-05-26.
[9]Hwang S H,Kim H J,Kim J M,et al.Compensation of Amplitude Imbalance and Imperfect Quadrature in Resolver Signals for PMSM Drives[J].IEEE Transactions on Industry Applications,2011,47(1):134-143.
[10]Hanselman D C.Resolver Signal Requirements for High Accuracy Resolver-to-Digital Conversion[J].IEEE Trans on Industrial Electronics,1990,37(6),556-561.
[11]Du Chunyang,Yang Guijie.Error Analysis and Compensation for Inductosynbased Position Measuring System[R].38thIndustry Applications Conference Annual Meeting,2003,1:6-10.
[12]刘小康,彭凯,王先全,等.纳米时栅位移传感器的理论模型与误差分析[J].仪器仪表学报,2014,35(5):1136-1142.
[13]王先全,雷毅谈,张虹光,等.基于DSP的时栅位移传感器误差在线处理与系统设计[J].传感技术学报,2014,27(8):1054-1059.