基于完善的完整合体实证模式分解和优化极端学习机器的MEMS陀螺仪温度补偿
Zhihao Zhang1, Jintao Zhang1, Xiaohan Zhu2
1Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
Micromachines
|May 25, 2024
概括
本研究介绍了一种混合算法,用于在双质量MEMS陀螺仪中进行温度补偿. 该方法通过减少角度随机步行和偏差不稳定性,显著提高陀螺仪的准确性.
科学领域:
- * 微电子机械系统 (MEMS) 技术
- * 传感器处理信号
- * 惯性导航系统
背景情况:
- *MEMS陀螺仪容易受到温度变化的影响,影响其性能.
- * 准确的温度补偿对于各种应用中陀螺仪可靠运行至关重要.
- *现有的补偿方法可能会与复杂的噪音和漂移模式作斗争.
研究的目的:
- * 开发和验证一种新的混合算法,用于双质MEMS陀螺仪的温度补偿.
- *通过有效解决温度诱导的漂移和噪声来提高陀螺仪的准确性.
- *为了证明算法的优越性能与传统方法相比.
主要方法:
- * 提出了一种混合算法,将改进的完整集合实证模式分解与自适应噪声 (ICEEMDAN),样本,时间频率峰值过,非主导排序遗传算法-II (NSGA II) 和极端学习机器 (ELM) 结合起来.
- * 使用ICEEMDAN进行信号分解,样本进行分类,以及时间频率峰值过以减少噪音.
- *采用NSGA II来优化ELM的温度漂移补偿,最大限度地减少预测错误和重量规范.
主要成果:
- * 混合算法有效地分解,分类,消除和补偿陀螺仪输出信号.
- * 角度随机步行从0.531076°/h/√Hz减少到6.65894 × 10-3°/h/√Hz. 这是一个非常好的结果.
- * 偏差稳定性显著改善,从32.7364°/h下降到0.259247°/h.
结论:
- * 拟议的混合算法为双质MEMS陀螺仪的温度补偿提供了强大而有效的解决方案.
- * 该方法在消除噪声和保留信号之间实现了有利的权衡,同时准确地建模温度漂移.
- * 陀螺仪性能指标的显著改进证明了开发的补偿计划的实际可行性.
相关概念视频
Gyroscope
2.9K
A gyroscope is defined as a spinning disk in which the axis of rotation is free to assume any orientation. When spinning, the orientation of the spin axis is unaffected by the orientation of the body that encloses it. The body or vehicle enclosing the gyroscope can be moved from place to place, while the orientation of the spin axis remains the same. This makes gyroscopes very useful in navigation, especially where magnetic compasses cannot be used, such as in crewed and crewless spacecraft,...
2.9K
Gyroscope: Precession
4.0K
Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
4.0K
Relative Motion Analysis using Rotating Axes
459
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
459
Relative Motion Analysis using Rotating Axes-Problem Solving
400
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Here, in order to determine the magnitude of velocity and acceleration for point...
400
Magnetic Damping
451
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
451
Relative Motion Analysis using Rotating Axes - Acceleration
330
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
Time differentiation is...
330


