共查询到14条相似文献,搜索用时 140 毫秒
1.
2.
3.
4.
基于DSP的静电悬浮转子微陀螺测控系统 总被引:1,自引:1,他引:0
开发了一种基于数字信号处理器(DSP)的静电悬浮转子微陀螺的可视化闭环测控系统.该系统是在VC33DSP平台下,采用增量式PID算法控制器,对VC33DSP开发系统的外设A/D、D/A和PCI芯片进行编程应用.具体为使用VC++编写可视化界面,对PCI芯片编程实现DSP与PC之间通信,使用VC33DSP汇编语言编程实现数据的输入输出.经编程测试,增量式汇编函数能够有效运行,为静电悬浮转子微陀螺的悬浮、旋转等检测控制实现奠定了一定的基础. 相似文献
5.
静电悬浮转子微陀螺信号发生电路有源带通滤波器设计 总被引:3,自引:1,他引:2
信号发生电路是静电悬浮转子微陀螺系统的重要组成部分。介绍了DDS信号发生电路的原理及基本构成和微陀螺信号电容检测的要求、特点以及主要技术指标,并根据具体带宽、中心频率的要求,设计了具有不同参数的有源滤波电路。通过电路模拟仿真实验表明了该电路的可行性之后,在具体实验的操作过程中,成功滤去了DDS信号发生电路所产生的低频直流偏置和高频噪声,从而提高了电路的整体信噪比和控制精度,并为后续静电悬浮转子微陀螺检测控制电路提供了较为理想的信号源。 相似文献
6.
7.
为了探讨永磁悬浮转子的稳定性,从能量的角度分析了引入动能后存在稳定悬浮的区域。根据陀螺效应的成因建立了陀螺力矩的解析式,分析了自由转子在受迫进动情况下实现稳定的最低临界转速,同时将该结论引申到受外力矩下的转子稳定的最低临界转速。同时得出了转子参数对临界转速影响的规律:转子绕对称轴的转动惯量越大,转子的临界转速越小;转子绕x轴或y轴方向的转动惯量越小,转子的临界转速越小;转子质量-长度系数越小,转子的临界转速越小。转子的临界转速越小,那么转子越容易达到稳定悬浮状态。 相似文献
8.
9.
10.
11.
Qijun Xiao Wenyuan Chen Shengyong Li Feng Cui Weiping Zhang 《Microsystem Technologies》2010,16(3):357-366
This paper presents a novel micromachined electrostatically suspended gyroscope (MESG) based on non-silicon micro electro
mechanical systems technology, which can measure dual-axis angular velocity and tri-axis linear acceleration. The position
of the rotor is detected capacitively and controlled electrostatically. In order to levitate the rotor along the Z axis, a levitation control model based on integrated control strategy for the MESG is presented. The damping coefficient
is calculated by finite element analysis and deduced by analytical solution. According to the analysis of the levitation control
force of the rotor, a three-degree-of-freedom close-loop control model is constructed. The theoretical relationship between
the proportional integral derivative control parameters and stiffness properties is deduced. Initial levitation simulation
result shows that the control principle is reasonable, which shows quick-response performance and global stability. Furthermore,
digitally controlled levitation circuits have been designed. 相似文献
12.
Kai Liu Weiping Zhang Wu Liu Wenyuan Chen Kai Li Feng Cui Shipeng Li 《Microsystem Technologies》2010,16(3):431-439
This paper presents design, simulation, and fabrication, levitation experiment of a micro-diamagnetic levitation system with
coils. This micro-system module can be applied in the micro-gyroscope system because of its stable levitation of disc. The
device configuration consists of three main parts: micro-disc, stator and permanent magnet (PM). Micro-disc is stably levitated
on the top of the stator and PMs due to stable diamagnetic force produced between PMs and pyrolytic graphite disc. Simulation
on levitation shows the situation of diamagnetic force at the centre, and offset from centre. Finally, from the levitation
experiment we can see clearly the influence on levitation height of PM thickness and micro-disc thickness. As far as micro-gyroscope
is concerned, coils analysis shows relationship between rotation torque and current frequency by Ansoft Maxwell, and a rotation
circuit also is designed by the authors in the end of the paper. 相似文献
13.
研究了一种由外壳、提升磁体、上热解石墨板、线圈、永磁体转子和下热解石墨板构成的气流能量采集器,自由悬浮于两热解石墨板之间的永磁体转子可在外界气流的作用下转动,并在线圈中产生感应电压。采用有限元软件COMSOL Multiphysics 5.3和ANSYS Maxwell 16.0建立仿真模型,对能量采集器的悬浮特性、驱动特性和输出特性进行仿真分析通过实验验证,发现当喷嘴为83°时转子所受的气流驱动力矩最大;实验测试永磁体转子悬浮高度56.5 mm,与仿真高度57.5 mm误差仅为1.77%;能量采集器稳定工作的气流量范围为137 sccm^733 sccm,最大输出电压可达160 mV。 相似文献
14.
孙爱良 《自动化与仪器仪表》2012,(2):182-183
为了实现静电转子的稳定悬浮,建立了针对于悬浮转子的静电支承模型。在模型的建立过程中,分析了静电力作用机理,给出了静电力计算公式。接着建立了以DSP TMS320F28335开发板为核心的悬浮控制辅助系统。设计了基于AD7656的16A/D转换电路和基于时间管理模块的DSP脉宽调制信号发生器。 相似文献