光学 精密工程, 2014, 22 (1): 92, 网络出版: 2014-02-18   

数字闭环加速度计的带宽测试

Bandwidth measurement of digital closed-loop accelerometer
作者单位
1 北京航空航天大学 精密光机电一体化技术教育部重点实验室,北京,100191
2 上海航天控制技术研究所,上海,200233
摘要
为了测试数字闭环加速度计系统的带宽,对国军标1037A-2004中的电模拟法进行了改进。首先,讨论了用国军标1037A-2004中的电模拟法测试数字闭环加速度计带宽存在的不足,然后,对加入激励信号的数字闭环加速度计系统的检测电路及闭环控制模型进行分析。分析显示,在系统的反馈回路加入激励信号最终可以在输入端等效为外界输入加速度,且该系统的动态模型与传统机械激励测试法系统的动态模型一致。最后,提出一种在数字闭环加速度计的反馈回路外加激励信号来测试该系统带宽的方法。实验表明: 数字闭环加速度计系统的实测-3 dB带宽值为320 Hz左右,与理论值(345 Hz)基本吻合。该方法具有精度高、误差源少、便于在线测试等特点,可满足大多数数字闭环加速度计的带宽测试要求。
Abstract
To measure the bandwidth of a digital closed-loop accelerometer, the electricity simulation method in GJB1037A-2004 was investigated. First, some drawbacks of measuring the bandwidth of the digital closed-loop accelerometer by using the electricity simulation method in GJB1037A-2004 were discussed. Then, the detection circuit and the closed-loop control system of the digital closed-loop accelerometer with an excitation signal were analyzed. The analysis shows that the effect of excitation signal added into a feedback circuit is equivalent to an input analog acceleration in the input end and the dynamic model of the digital closed-loop accelerometer is consistent with the dynamic model of the traditional mechanical system. Finally, a method which adds the excitation signal at the feedback circuit of the digital closed-loop accelerometer to measure the bandwidth of the accelerometer was proposed. Experimental results indicate that the -3 dB bandwidth data of the digital closed-loop accelerometer is about 320 Hz, which is close to theoretic data (345 Hz). The proposed method has the features of higher accurate, less error sources and convenient to test in online ,and can satisfy the bandwidth testing requirement of most digital closed-loop accelerometers.
参考文献

[1] 何铁春,周世勤.惯性导航加速度计[M]. 北京: 国防工业出版社, 1983: 35-326.

    HE T CH, ZHOU SH Q. Inertial Navigation Accelerometer [M]. Beijing: National Defense Industry Publish,1983: 35-41,195-197,279-326.

[2] 周海涛.数字闭环加速度计检测电路研究[D].北京: 北京航空航天大学, 2010.

    ZHOU H T. Research in the Detection Circuit of the Digital Closed-loop Accelerometer [D]. Beijing: Beihang University, 2010.

[3] LU Y J. Inertia Apparatus (II) [M]. Beijing: China Space Navigation Publish, 2009: 28.

[4] 王平,赵新民,段尚枢,等.加速度传感器电激励等价性测试方法的研究[J].计量学报, 1994, 15(3): 188-192.

    WANG P, ZHAO X M, DUAN SH SH, et al.. Study on electricity simulation equivalence test of accelerometer [J]. Acta Metrologica Sinica, 1994, 15(3): 188-192.

[5] 张春熹,魏渊,张晞,等.数字闭环加速度计系统模型分析与校正设计[J]. 仪器仪表学报, 2012, 33(12): 2833-2839.

    ZHANG CH X, WEI Y, ZHANG X, et al.. Model analysis and emendation design of the digital close-loop accelerometer system[J]. Chinese Journal of Scientific Instrument, 2012, 33(12): 2833- 2839. (in Chinese)

[6] 姜劭栋,裘安萍,施芹,等.硅微陀螺仪正交耦合系数的计算及验证[J].光学 精密工程, 2013, 21(1): 87-93.

    JIANG S D, QIU A P, SHI Q, et al.. Calculation and verification of quadrature coupling coefficients of silicon micro-gyroscope [J]. Opt. Precision Eng., 2013, 21 (1): 87-93. (in Chinese)

[7] 陈茂胜,金光,张涛,等.积分反馈自抗扰控制力矩陀螺框架伺服系统设计[J].光学 精密工程, 2012, 20(11): 2424-2432.

    CHEN M SH, JIN G, ZHANG T, et al.. Design of gimbal servo system of CMG using active disturbance rejection control with integral feedback [J]. Opt. Precision Eng.,2012, 20(11): 2424-2432. (in Chinese)

[8] 王耿,官春林,张小军,等.应变式微型精密压电驱动器的一体化设计及其PID控制[J].光学 精密工程, 2013, 21(3): 709-716.

    WANG G, GUAN CH L, ZHANG X J, et al.. Design and control of miniature piezoelectric actuator based on strain gauge sensor [J]. Opt. Precision Eng., 2013, 21(3): 709-716. (in Chinese)

[9] 陈茂胜,金光,安源,等.采用自适应PI控制的单框架控制力矩陀螺角动量飞轮系统的设计[J].光学 精密工程,2011,19(5): 1075-1081.

    CHEN M SH, JIN G, AN Y, et al.. Design of angular momentum wheel in SGCMG using adaptive compensation PI control strategy [J]. Opt. Precision Eng., 2011, 19(5): 1075-1081. (in Chinese)

[10] 闵跃军,薛旭.基于频域的挠性摆式加速度计表头参数辨识方法[J]. 中国惯性技术学报, 2008, 16(1): 94-99.

    MIN Y J, XUE X. Parameter identification method based on frequency domain of flexure hinged pendulum accelerometer [J]. Journal of Chinese Inertial Technology, 2008, 16(1): 94-99. (in Chinese)

[11] GJB 1037A-2004单轴摆式伺服线加速度计试验方法\[S\].北京: 国防科学技术工业委员会, 2004.

    GJB 1037A-2004 Test methods for single-axis pendulous servo linear accelerometers \[S\]. Beijing: COSTIND, 2004.

[12] 薛旭,闵跃军,郭晓芳,等.挠性摆式加速度计频率特性的电激励测试方法及参数辨识[J]. 导弹与航天运载技术, 2008,4(1): 39-45.

    XUE X, MIN Y J, GUO X F, et al.. Method of electric stimulation test for frequency characteristic of flexible pendulum accelerometer[J]. Missiles and Space Vehicles, 2008, 4(1): 39-45. (in Chinese)

[13] 顾欣怡,张晞,魏渊.数字闭环加速度计控制器设计与仿真[J]. 箭弹与制导学报, 2012, 6(4): 170-173.

    GU X Y, ZHANG X, WEI Y. Design and simulation of digital closed-loop accelerometer controller [J]. Journal of Projectiles Rockets Missiles and Guidance, 2011, 6(4): 170-173. (in Chinese)

[14] LI L, ZHANG CH X, ZHANG X, et al.. Investigation on noise of digital close-loop q-flex accelerometer [J]. IEEE Conference on Industrial Electronics and Applications, 2011: 614-619.

张晞, 李德燕, 王洪波, 李立京. 数字闭环加速度计的带宽测试[J]. 光学 精密工程, 2014, 22(1): 92. ZHANG Xi, LI De-yan, WANG Hong-bo, LI Li-jing. Bandwidth measurement of digital closed-loop accelerometer[J]. Optics and Precision Engineering, 2014, 22(1): 92.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!