在温度干扰下对微电机械系统陀螺仪的自适应性闭环控制进行研究
Ke Yang1, Jianhua Li2, Jiajie Yang1
1School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.
Micromachines
|September 28, 2024
概括
本研究介绍了一种适应性PID控制器用于微电子机械系统 (MEMS) 陀螺仪. 适应式控制器显著减少了超越并改善了启动稳定性,克服了固定参数控制器在不同温度下的局限性.
科学领域:
- 控制系统工程 控制系统工程
- 微电子机械系统 (MEMS) 是一种微电子机械系统.
- 惯性传感技术 惯性传感技术
背景情况:
- 微电子机械系统 (MEMS) 陀螺仪是测量角度速度的关键惯性传感器,广泛用于消费电子和汽车应用.
- 对于MEMS陀螺仪的传统闭环控制系统通常使用具有固定参数的比例积分导数 (PID) 控制器.
- 固定参数PID控制器在超越和上升时间之间存在性能权衡,并且容易受到温度变化引起的参数漂移的影响.
研究的目的:
- 开发和评估用于MEMS陀螺仪的自适应PID控制器.
- 为了减轻PID控制器的性能下降,由于温度引起的陀螺仪参数变化.
- 改进瞬态响应特性,特别是减少陀螺仪操作期间的超越和沉降时间.
主要方法:
- 一个自适应的PID控制器被设计成根据陀螺仪的误差值动态调整其参数,以应对温度波动.
- 使用Simulink.一个结合自适应PID控制器的闭环控制系统被实现.
- 适应式PID控制器的性能在定量上与传统的固定参数PID控制器进行了比较.
主要成果:
- 适应式PID控制器证明了对陀螺仪参数温度诱导变化的有效跟踪.
- 与经典PID控制器相比,Overshoot减少了显著的96%,同时保持了可比的上升时间.
- 在陀螺仪启动时,自适应PID实现了0.036秒的更快的定位时间,超过了传统PID的0.06秒.
结论:
- 拟议的自适应PID控制器提供了一个强大的解决方案,用于在不同的热条件下提高MEMS陀螺仪的性能.
- 这种自适应方法有效地解决了固定参数PID控制器的局限性,从而提高了稳定性并减少了超越.
- 这些发现突显了自适应控制策略在动态环境中优化惯性传感器系统的潜力.
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