To deal with the inherent nonlinearity and open-loop instability of the electromagnetic suspension（EMS） system,a new nonlinear control method is proposed.The simulation results show that,for a PID controller,the ove...To deal with the inherent nonlinearity and open-loop instability of the electromagnetic suspension（EMS） system,a new nonlinear control method is proposed.The simulation results show that,for a PID controller,the over-shoot of the system response to an airgap step disturbance is about 3 mm,and the transient time is 6 s;however,for the proposed nonlinear controller,there is no overshoot and transient time within 2 s.The proposed method has a faster response and stronger robustness.With a designed bi-DSP suspension controller,this nonlinear control method was implemented on the Shanghai Urban Maglev Test Line（SUMTL） to validate its effectiveness and feasibility.展开更多
基金supported by the National Natural Science Foundation of China(61203129,61174038,61473151,51507080)the Fundamental Research Funds for the Central Universities(30915011104,30920130121010,30920140112005)
文摘To deal with the inherent nonlinearity and open-loop instability of the electromagnetic suspension（EMS） system,a new nonlinear control method is proposed.The simulation results show that,for a PID controller,the over-shoot of the system response to an airgap step disturbance is about 3 mm,and the transient time is 6 s;however,for the proposed nonlinear controller,there is no overshoot and transient time within 2 s.The proposed method has a faster response and stronger robustness.With a designed bi-DSP suspension controller,this nonlinear control method was implemented on the Shanghai Urban Maglev Test Line（SUMTL） to validate its effectiveness and feasibility.
文摘在列车运行控制领域,动态编组技术正受到日益关注。文章以降低列车牵引能耗为目标,围绕编组精确性以及抗干扰能力,提出了一种基于非线性权重的多种群协同粒子群优化控制方法(Multi-population Cooperative Particle Swarm Optimization based on nonlinear weights,MCPSO-NW)。首先,对动态编组建立了模型,然后建立了以低能量消耗和精确编组为目标的动态编组优化问题,分别使用MCPSO-NW算法和粒子群算法控制列车运行。仿真试验结果表明,MCPSO-NW算法具备更优的稳定性,在提高编组精度的同时具备更低的能耗,在外界干扰条件下,能够合理调整列车速度,实现低能耗的目标,以满足节能减排的需求。
