中国科学院机构知识库网格系统: 检索

Electromagnetic Angular Position Sensing Using High-Magnetic-Permeability Materials 期刊论文 OAI收割
IEEE SENSORS JOURNAL, 2022, 卷号: 22, 期号: 12, 页码: 11626-11636
作者: Wang, Heng; Wang, Shuangyi; Rajamani, Rajesh

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Sensors Magnetic sensors Robot sensing systems Magnetic field measurement Electromagnets Estimation Magnetic separation Angular position sensing position estimation high-magnetic-permeabilitymaterial disturbance rejection

Constraint analysis of measurement accuracy in high-precision X-ray pulsar positioning 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2020, 卷号: 34, 期号: 30
作者: Yao, Li; Tong, Su; Mei, Luan; Zhang, Furui; Zhu, Yechuan

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收藏 | 浏览/下载：52/0 | 提交时间：2021/01/07

X-ray pulsar navigation angular position second-order correlation

An improved feedforward controller design method 会议论文 OAI收割
Chengdu, China, June 26, 2018 - June 29, 2018
作者: He, Qiunong; Mao, Yao; Zhou, Xi; Li, Zhijun; Zhang, Chao

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收藏 | 浏览/下载：23/0 | 提交时间：2021/05/06

position feedforward optical control system angular position sensors Kalman filter

Study of a high-precision pulsar angular position measuring method 期刊论文 OAI收割
MODERN PHYSICS LETTERS B, 2018, 卷号: 32, 期号: 29
作者: Li, Yao; Su, Tong; Sheng, Lizhi; Qiang, Pengfei; Zhao, Baosheng

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收藏 | 浏览/下载：49/0 | 提交时间：2018/11/21

Angular Position Measurement X-ray Pulsar Intensity Correlation

Angular position measurement of pulsars based on X-ray intensity correlation 期刊论文 OAI收割
OPTIK, 2018, 卷号: 161, 页码: 8-11
作者: Su Tong; Li Yao; Sheng Lizhi; Qiang Pengfei; Zhao Baosheng

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收藏 | 浏览/下载：36/0 | 提交时间：2018/04/19

Angular Position X-ray Pulsar Second-order Correlation

Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者: Zhang Y.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter based on high sampling rate was established model and error characteristics were analyzed. With the hypothesis of constant acceleration -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism the frequency characteristics of angular velocity transfer function are analyzed and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s sampling period and parameters are 0.08ms and 0.01279 respectively the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2) the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism -- filter can reduce noise effectively and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.

The angular velocity estimation principal of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者: Zhang Y.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter and its angular velocity transfer function were predigested. Combing with optimum parameters -- filter based on high sampling rate was established the effect of and sample rate on filter nature frequency were evaluated. According to the requirements of stabilization platform the principle of steady and transient tracking filter differential were proved. With the hypothesis of constant acceleration the frequency characteristics of angular velocity transfer function were analyzed three-dimensional Kalman filter was simplified and the filter parameters were designed. The results show that when the spectrum of input signal was lower than 6rad/s parameters was 0.02 and sampling period were 0.08ms and 0.1ms respectively the filter can realize differential exactly when the spectrum was 9rad/s the precision was no less than 1.1% the phase leading of angular position was no less than 70 the natural frequency should be higher than the cut-off frequency of stabilization platform was two or three times. In the engineering of electro-optical stabilization servo mechanism -- filter has properties of tracking differential and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.

Auto-detection system of photoelectric encoder based on DSP (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Industrial and Information Systems, IIS 2010, July 10, 2010 - July 11, 2010, Dalian, China
作者: Wan Q.-H.; Qi L.-L.; Liang L.-H.; Lu X.-R.; Du Y.-C.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

To improve the automatic detection efficiency of photoelectric encoder an auto-detection system of photoelectric encoder is designed using DSP (TMS320F2812) as the core device. A 21-bit high accuracy photoelectric encoder is used as the angle standard. It is connected to the detected photoelectric encoder coaxially. They will rotate synchronously under the driving of electric motor. Data acquisition and processing system collects the angular data of the two photoelectric encoders at the same angular position and calculates the angular error of detected photoelectric encoder. Then the data is put into computer. The computer will display the data error. The result of experiment shows that the system could detect encoder whose bit-number below 19 the detecting person could be reduced to one and the detecting speed could be increased to 8-10 times. 2010 IEEE.

Angular rate of test table based on high-speed non-contact measurement (EI CONFERENCE) 会议论文 OAI收割
9th International Conference on Electronic Measurement and Instruments, ICEMI 2009, August 16, 2009 - August 19, 2009, Beijing, China
作者: Yang L.; Zhao Y.; Zhao Y.; Zhao Y.; Yang L.

收藏 | 浏览/下载：140/0 | 提交时间：2013/03/25

This article will introduces a high-speed non-contact method that can measures the angular rate of a test table though an objective perspective. This method adopts a collimator tube that can be measured as a target fixed to the test table and the target corresponds to the angular position of the test table. In the process of the table rotating the camera will to keep track of the objective at a high speed. Due to the high sampling frequency of the high-speed camera instantaneous angular rate of test table can be measured. With pixel subdivision technology its measuring accuracy can be up to 0.02 pixels. We use this methods measured a low-speed test table's angular rate and analyzed the data. The error analysis shows when the rate of the test table is 0.20/s the accuracy of the method can achieve 0.0220%. 2009 IEEE.

Study of high speed photography measuring instrument (EI CONFERENCE) 会议论文 OAI收割
27th International Congress on High-Speed Photography and Photonics, September 17, 2006 - September 22, 2006, Xi'an, China
Zhang Z.; Sun J.; Wu K.

收藏 | 浏览/下载：25/0 | 提交时间：2013/03/25

High speed photograph measuring instrument is mainly used to measure and track the exterior ballistics which can measure the flying position of the missile in the initial phase and trajectory. A new high speed photograph measuring instrument is presented in this paper. High speed photography measuring system records the parameters of object real-time and then acquires the flying position and trajectory data of the missile in the initial phase. The detection distance of high speed photography is more than 4.5km and the least detection distance is 450m under the condition of well-balanced angular velocity and angular acceleration program pilot track error less than 5. This instrument also can measure and record the flying trail and trajectory parameters of plane aero naval missile.