共查询到19条相似文献,搜索用时 203 毫秒
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加速度计ADXL105的性能测试 总被引:2,自引:0,他引:2
ADXL105在惯性导航系统中用以测量车辆的线加速度,再经过两次积分,得到车辆的位置信息。要进行精确定位,必须确保ADXL105的性能。本文就ADXL105的静态特性进行了测试,建立了表示车辆加速度及影响导航系统定位精度的主要误差的数学模型,并对模型的准确性进行了评价。 相似文献
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加速度计ADXL105的性能测试 总被引:2,自引:0,他引:2
ADXL105在惯性导航系统中用以测量车辆的线加速度,再经过两次积分,得到车辆的位置信息.要进行精确定位,必须确保ADXL105的性能.本文就ADXL105的静态特性进行了测试,建立了表示车辆加速度及影响导航系统定位精度的主要误差的数学模型,并对模型的准确性进行了评价. 相似文献
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介绍了加速度传感器ADXL105的特点和工作原理,结合汽车平顺性测试的要求,给出了汽车平顺性测试电路的具体设计和必要的性能测试方法。[编者按] 相似文献
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该加速度测试仪是为了对某些产品进行冲击试验而制作的。该加速度测试仪使用了由微机械加工技术制造的单片加速度传感器ADXL50(AD公司生产)。 这是一种在硅片上安装有微型机械弹簧、通过检测该微型机械弹簧的移动测试出物体的加速度的集成电路。与过去应用压电效应制作的加速度计不同的地方主要有传感器体积小、方向性好。 单片ADXL50有下述优点:①从传感器到信号处理、信号输出电路均封装在一个TO—100的管壳内,实现了一体化。②测量范围宽,可达±50G。③使用单—5V电源。④频率响应范围宽,DC~1kHz。⑤可以承受2000G以上的加速度。⑥集成电路内部同时集成有所需的放大器和基准电源。 相似文献
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介绍了一种基于加速度传感器ADXL362和zigbee无线通信模块的低成本地质位移在线监测系统.并着重介绍了无线加速度传感器的组成. 相似文献
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由于陀螺仪量程较小,难以应用于高转速载体的姿态测试中,因此设计了以MEMS线加速度计ADXL377和地磁传感器HMC1043为微惯性测量单元(MIMU)的微型角速度解算系统。系统以FPGA作为协处理器控制ADC模块对11路传感器信号的同步转化,并对转换后的数据进行及时采集、缓存;以DSP芯片TMS320C6713作为主处理器完成角速度的实时解算。系统最大可测角速度达30 r/s,信号的采集、解算实时性强,角速度的测量精度高,而且电路半径仅5 cm,安装方便、功耗低。 相似文献
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《Mechatronics》2020
Modern industrial production requires fast and automated quality control using state-of-the-art surface metrology sensors embedded in fast high-precision measuring machines. In order to achieve both fast and precise positioning, active control systems with model-based compensation of dynamic positioning errors due to increased acceleration forces can be applied. However, these active control systems require an accurate estimate of the dynamic positioning errors of the tool-center-point (TCP) with respect to the precisely measured position of the drive axes. A novel optical camera sensor system with high subpixel precision based on multi-spot detection enables the direct measurement of the TCP position at a slower rate than the sampling time of the control system and with significant latency or dead-time. Based on a general yet simple deviation model with large model mismatch, three approaches to estimate the TCP position are presented and compared with simulation and test bench results of a modified Mahr MFU 100 measuring machine. First, a multi-rate Kalman filter with delay compensation is designed based on a simple physical modal model generalizing the applicability of the concept for different types of measuring machines and machine tools. Second, additional sensors in form of accelerometers placed at the TCP are used to obtain an indirect measurement of the TCP position at a fast sampling rate to reduce the effect of the model mismatch. Third, instead of additional sensors, an alternative concept consisting of enhanced Gaussian process modeling to improve the model accuracy with a data-based error model is incorporated in the Kalman filter framework in form of fast pseudo-measurements outperforming the other approaches. 相似文献
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Lehtinen Markku S. Gothoni Patrick R. 《IEEE transactions on bio-medical engineering》1985,(8):549-553
An accurate and physically defined system for measuring tremor in unanesthetized and unrestrained rats is described. The method is based on measuring the vibrations of an ordinary animal cage induced by the tremor of the animal inside it. The vibrations of the animal cage were recorded with a piezoelectric acceleration sensor and analyzed using a microprocessor on-line system. The computer was programmed in assembly language to perform a fast Fourier transform (FFT) spectrum analysis in real time. In those cases in which a frequency distribution curve is too complicated to handle, a mean value of all tremor components belonging to the different frequencies can be used. This mean value is called tremor intensity. Theoretical considerations using the spectral density distribution were employed to find a physically motivated measure of tremor intensity. The measuring system is carefully analyzed, and it is shown that the output of the system can be adjusted to give an estimate of the theoretically motivated measure of the tremor intensity. Measurements of some drug-induced tremor spectra are represented. 相似文献