The invention discloses a speed time lag feedback control method of a traffic flow following model, and belongs to the field of traffic flow control. According to the invention, a classic optimized speed following model is established under a traffic flow system, and the stability of the optimized speed following model is determined; a classic optimized speed following model is improved through aspeed time-delay feedback control method, and the stability condition of the improved following model containing time-delay feedback control items is determined in combination with the principle of control science; the method further includes determining a value range of a feedback gain coefficient; solving a corresponding stable time delay interval according to a stability switching principle ofa time delay differential equation and a definite integral stability analysis method; designing a controller according to the feedback gain coefficient and the stable time delay interval, enabling theunstable parameter combination of the optimized speed following model to become stable, thus expanding the stable parameter combination interval of the original optimized speed following model, improving the stability of the following model, inhibiting the traffic jam, improving the traffic travel efficiency and the traffic resource utilization rate, and improving the stability of a traffic flowsystem effectively.
本发明公开的一种交通流跟驰模型的速度时滞反馈控制方法,属于交通流控制领域。本发明在交通流系统下建立经典优化速度跟驰模型,确定优化速度跟驰模型的稳定性;通过速度时滞反馈控制方法改进经典优化速度跟驰模型,结合控制学原理,确定改进后的含时滞反馈控制项的跟驰模型的稳定性条件;确定反馈增益系数的取值范围;根据时滞微分方程的稳定性切换原理和定积分稳定性分析方法,求取相应的稳定时滞区间;根据反馈增益系数和稳定时滞区间设计控制器,使优化速度跟驰模型的不稳定参数组合变为稳定,扩大原优化速度跟驰模型的稳定参数组合区间,提高跟驰模型的稳定性,抑制交通拥堵、提高交通出行效率及交通资源利用率,有效地提高交通流系统的稳定性。
Speed time lag feedback control method of traffic flow following model
一种交通流跟驰模型的速度时滞反馈控制方法
2020-06-26
Patent
Electronic Resource
Chinese