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有效飞机动力学转换可能会导致人机闭环失稳,在特定条件下会引起驾驶员诱发振荡。针对此问题,分析了致使驾驶员诱发振荡发生的主要因素,构建了人机闭环系统模型,推导了人机闭环系统失稳数学模型。研究了引起有效飞机动力学转换的可能因素,并运用时域和频域分析技术对有效飞机动力学转换所产生的影响进行了分析。案例研究表明:有效飞机动力学转换后,在特定条件下可引发驾驶员诱发振荡,但由此引起的驾驶员诱发振荡可以采用相关方法进行抑制。在恰当的抑制方法作用下,由有效飞机动力学转换引发的驾驶员诱发振荡不会产生灾难性的后果。
Effective aircraft dynamics conversion may lead to human-machine closed-loop instability that can cause driver-induced oscillations under certain conditions. In response to this problem, the main factors that cause the driver to induce oscillation are analyzed, a closed-loop man-machine system model is constructed, and the mathematical model of the closed-loop system instability is deduced. The possible factors that lead to effective aircraft kinetic transformation are studied and the effects of effective aircraft kinetic transformation are analyzed using time-domain and frequency-domain analysis techniques. Case studies show that the driver-induced oscillations can be induced under certain conditions after effective aircraft kinetic conversion, but the driver-induced oscillations that result from this can be suppressed using related methods. The driver-induced oscillations caused by effective aircraft kinetic conversion will not have catastrophic consequences with the appropriate suppression method.