针对分布式驾驶无人地面车辆的自适应差异转向策略,其可变配置基于经过修改的本地化建模的滑动模式控制
Shengyang Lu1, Yue Jiang1, Lei Zhang1
1College of Intelligent Science, National University of Defense Technology, Changsha 410073, China.
ISA transactions
|June 9, 2024
概括
本研究介绍了无人驾驶平台的等级自适应控制策略,其配置变化,改进差速转向和车辆动态. 新方法优化了扭矩分布,提高了稳定性和效率.
科学领域:
- 机器人和控制系统 机器人和控制系统
- 车辆动力学和控制控制
背景情况:
- 具有可变配置的无人驾驶平台面临着差异转向和车辆动态方面的挑战,因为配置变化会影响控制策略.
- 基于数学模型的现有控制方法与由配置变化引起的动态性能转移作斗争.
研究的目的:
- 为具有可变配置的无人驾驶平台开发一个层次化的自适应差异转向策略.
- 分析配置变化对转向增益和曲率响应的影响.
- 提高车辆动力,稳定性和效率,在复杂的任务,如物料运输.
主要方法:
- 分析在不同轮距和跑道下对活跃起伏动量的起伏角度反应,选择"可操纵"和"平衡"的结构模式.
- 实现局部化建模的滑动模式控制与扩展状态观察员,以估计曲折时刻,考虑到电机执行延迟.
- 使用鱼优化算法实时优化轮子扭矩,以平衡轮胎能量消耗和负载率.
主要成果:
- 通过共同模拟和缩放原型实验验证实动力学理论和控制算法优势.
- 在轮胎消耗能指数和轮胎负载率指数方面取得了显著的改进.
- 证明了可变配置无人驾驶平台的增强差异转向性能和车辆动态.
结论:
- 提出的等级自适应差异转向策略有效地解决了可变车辆配置的挑战.
- 控制算法确保了驾驶稳定性,同时优化了轮胎性能指标.
- 该研究验证了一种强大的方法,用于对复杂的无人驾驶平台进行高性能控制.
相关概念视频
Controller Configurations
94
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...
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
94
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
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
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
Time-Domain Interpretation of PD Control
94
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
94
Feedback control systems
304
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...
304


