为满足高速风洞试验现场日益复杂的采集需求,研制了一种高速风洞微型测量系统,由电气接口模块、增益控制模块、低通滤波模块、扫描采集模块、主控模块、LAN总线接口模块组成,实现了电压信号放大、低通滤波、模数转换、数据处理与分析等...为满足高速风洞试验现场日益复杂的采集需求,研制了一种高速风洞微型测量系统,由电气接口模块、增益控制模块、低通滤波模块、扫描采集模块、主控模块、LAN总线接口模块组成,实现了电压信号放大、低通滤波、模数转换、数据处理与分析等功能;静态校准结果线性度及误差限小于0.03%,与风洞常规测量系统相当,将该系统成功应用于2.4米跨声速风洞标模测力试验,开展了与常规测量系统的对比试验以及测量精度试验,马赫数0.40、0.78、0.85对应的C Lα差量分别为0.0009、0.0004和0.0020,差异在2.0%以内,C m CL差量分别为0.0039、0.0003和0.0011,对应焦点位置变化均小于0.5%气动弦长,重复性精度指标绝大部分均在国军标合格指标以内,部分达到先进指标;结果表明微型测量系统精度和稳定性满足高速风洞试验要求。展开更多
micro-electro-mechanical system （MEMS） device has the advantages of both electronic system and mechanical system. With the development of MEMS devices for satellite, it is possible to establish much lighter and smal...micro-electro-mechanical system （MEMS） device has the advantages of both electronic system and mechanical system. With the development of MEMS devices for satellite, it is possible to establish much lighter and smaller nanosatellites with higher performance and longer lifecyele. The power consumption of MEMS devices is usually much lower than that of traditional devices, which will greatly reduce the consumption of power. For its small size and simple architecture, MEMS devices can be easily integrated together and achieve redundancy. Launched on April 18, 2004, NS - 1 is a nanosatellite for science exploration and MEMS devices test. A mass of science data and images were acquired during its running. NS - 1 weights less than 25 kg. It consists of several MEMS devices, including one miniature inertial measurement unit（MIMU） , three micro complementary metal oxide semiconductor （CMOS）cameras, one sun sensor, three momentum wheels, and one micro magnetic sensor. By applying micro components based on MEMS technology, NS - 1 has made success in the experiments of integrative design, manufacture, and MEMS devices integration. In this paper, some MEMS devices for nanosatellite and picosatellite are introduced, which have been tested on NS -1 nanosatellite or on the ground.展开更多
文摘为满足高速风洞试验现场日益复杂的采集需求,研制了一种高速风洞微型测量系统,由电气接口模块、增益控制模块、低通滤波模块、扫描采集模块、主控模块、LAN总线接口模块组成,实现了电压信号放大、低通滤波、模数转换、数据处理与分析等功能;静态校准结果线性度及误差限小于0.03%,与风洞常规测量系统相当,将该系统成功应用于2.4米跨声速风洞标模测力试验,开展了与常规测量系统的对比试验以及测量精度试验,马赫数0.40、0.78、0.85对应的C Lα差量分别为0.0009、0.0004和0.0020,差异在2.0%以内,C m CL差量分别为0.0039、0.0003和0.0011,对应焦点位置变化均小于0.5%气动弦长,重复性精度指标绝大部分均在国军标合格指标以内,部分达到先进指标;结果表明微型测量系统精度和稳定性满足高速风洞试验要求。
文摘micro-electro-mechanical system （MEMS） device has the advantages of both electronic system and mechanical system. With the development of MEMS devices for satellite, it is possible to establish much lighter and smaller nanosatellites with higher performance and longer lifecyele. The power consumption of MEMS devices is usually much lower than that of traditional devices, which will greatly reduce the consumption of power. For its small size and simple architecture, MEMS devices can be easily integrated together and achieve redundancy. Launched on April 18, 2004, NS - 1 is a nanosatellite for science exploration and MEMS devices test. A mass of science data and images were acquired during its running. NS - 1 weights less than 25 kg. It consists of several MEMS devices, including one miniature inertial measurement unit（MIMU） , three micro complementary metal oxide semiconductor （CMOS）cameras, one sun sensor, three momentum wheels, and one micro magnetic sensor. By applying micro components based on MEMS technology, NS - 1 has made success in the experiments of integrative design, manufacture, and MEMS devices integration. In this paper, some MEMS devices for nanosatellite and picosatellite are introduced, which have been tested on NS -1 nanosatellite or on the ground.
