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相关概念视频

Open and closed-loop control systems01:17

Open and closed-loop control systems

652
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
652
PD Controller: Design01:26

PD Controller: Design

193
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,...
193
Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

98
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...
98
Controller Configurations01:22

Controller Configurations

85
Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
85
Feedback control systems01:26

Feedback control systems

288
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...
288
Control Systems: Applications01:25

Control Systems: Applications

578
Electrical engineering plays a pivotal role in our daily lives, with control systems at the heart of many applications, from home appliances to sophisticated space shuttles. Control systems manage and regulate the behavior of devices and processes, ensuring they function safely, correctly, and efficiently.
In modern vehicles, control systems manage various functions to enhance performance and safety. The steering wheel and accelerator are primary inputs in a car's control system. The...
578

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An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
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使用双层闭环模型的Steer-by-wire控制算法.

Hao Yin1, Zexian Wang2, Jiang Liu2

  • 1School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, 266520, China. yinhao_vehicle@qut.edu.cn.

Scientific reports
|November 18, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了用于Steer-by-Wire (SBW) 系统的模糊PID控制器,提高了车辆的稳定性. 新策略改进了前轮角度控制,使方向盘变得更安全,更快速响应,特别是在高速行驶时.

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科学领域:

  • 汽车工程 汽车工程
  • 控制系统 控制系统
  • 机器人技术 机器人技术 机器人技术

背景情况:

  • 转向电缆 (SBW) 系统对于现代车辆底盘控制至关重要.
  • 精确和快速的轮角控制对于最佳的SBW性能和车辆动力学至关重要.

研究的目的:

  • 开发和验证一个先进的控制策略,以提高Steer-by-wire系统的性能.
  • 为了提高车辆前轮角度控制的准确性和响应性.

主要方法:

  • 建立了方向盘执行器的动态模型.
  • 使用CarSim和Simulink创建并验证了一个共模拟车辆模型.
  • 一个双层模糊的PID控制器与前轮角度补偿策略被设计和实施.

主要成果:

  • 提出的模糊PID控制器与前轮角度补偿显著改善了车辆的方向稳定性.
  • 模拟显示,峰值转率降低,收速度更快,特别是在高速时.
  • 控制器通过补偿实际与理想差异,实现了对所需前轮角度的渐进跟踪.

结论:

  • 开发的前轮角度补偿策略有效地提高了SBW系统的稳定性和响应性.
  • 双层模糊PID控制器为前轮角度的闭环反控制提供了一个强大的解决方案.
  • 这种方法特别有利于提高车辆的操控和安全性,在高速动态机动时.