ABSTRACT

This work develops and investigates the performance of a new control law, specifically a Linear-Quadratic Regulator augmented with integral action (LQI), for the local ramp metering control problem when bottlenecks are located many kilometers (up to 5 km) downstream of the metered on-ramp. LQI makes use of measurements all along the stretch extending from the controllable on-ramp to the bottleneck location, being therefore capable to improve the stability and robustness properties of the control loop, compared to alternative approaches (PI regulators) that employ measurements only from the bottleneck location. Simulation results reveal that: i) the proposed methodology handles efficiently the local ramp metering task in case of very distant downstream bottlenecks; and, ii) LQI is much less sensitive compared to other previously proposed control strategies.

摘要

这项工作开发并研究了一种新的控制律的性能，特别是当积分瓶颈位于计量表下游许多公里（最多5公里）时，针对局部斜坡计量控制问题的新的线性积分调节器（LQI）。匝道。LQI在从可控入口到瓶颈位置的整个拉伸过程中一直利用测量值，因此与仅采用从测量到测量的替代方法（PI调节器）相比，LQI能够改善控制回路的稳定性和鲁棒性。瓶颈位置。仿真结果表明：i）所提出的方法在下游瓶颈非常遥远的情况下有效地处理了本地斜坡计量任务；和，