开发和评估使用宏纤维复合材料 (MFC) 和长短记忆 (LSTM) 消除振动系统 振动预测 道路驾驶振动的AI算法
1Department of Smart Wearable Engineering, Soongsil University, Seoul 06978, Republic of Korea.
Materials (Basel, Switzerland)
|May 25, 2024
概括
这项研究引入了一种使用智能材料的活跃振动取消 (AVC) 系统,以减少道路振动,以提高乘客舒适度. 该系统使用长期短期记忆循环神经网络 (LSTM RNN) 准确地预测和取消振动.
科学领域:
- 机械工程 机械工程
- 智能材料是一种智能材料.
- 人工智能的人工智能
背景情况:
- 不定期的道路振动显著影响乘客在驾驶过程中的舒适性.
- 宏纤维复合材料 (MFC) 提供了一个灵活,轻量级的解决方案,作为双重用途的传感器和执行器,用于振动控制.
研究的目的:
- 开发和评估一种创新的主动振动取消 (AVC) 系统,以减轻道路引起的振动.
- 通过减少车辆运行期间的非周期性振动来提高乘客舒适度.
主要方法:
- 在城市 (首尔) 和高速公路上以每秒40公里的速度收集道路振动数据.
- 开发了一个使用长期短期记忆循环神经网络 (LSTM RNN) 的振动预测算法.
- 使用宏纤维复合材料 (MFCs) 来再生和消除振动,测量位移以进行评估.
主要成果:
- 在40公里/秒的速度下,LSTM RNN实现了97.27% (首尔) 和96.36% (高速公路) 的高预测精度.
- 主动振动取消 (AVC) 系统通过取消反向振动,有效地减少了目标振动.
- 使用根平均平方误差 (RMSE) 和标准偏差 (SD) 度量来评估振动减少.
结论:
- 开发的AVC系统,利用LSTM RNN预测和MFC执行器,成功地减轻了非周期性道路振动.
- 该系统显示了提高车辆乘客舒适度的巨大潜力.
- 准确的振动预测对于在现实驾驶条件下有效的激活取消至关重要.
更多相关视频
相关概念视频
PD Controller: Design
219
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
219
Root-Locus Method
146
A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block...
This system can be represented by a block...
146
Feedback control systems
305
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
305
Concept of Resonance and its Characteristics
5.0K
If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not...
5.0K
Multi-input and Multi-variable systems
106
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
In the absence...
106


