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Optimization of drivability control functions with two-stage rate limiters ?

机译:使用两阶段速率限制器优化可驾驶性控制功能

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Load changes in automotive drivelines may cause uncomfortable vibrations. A suitable motor torque control is able to remedy this problem. Often, a two degrees of freedom structure is used in these drivability control functions. In this structure, the desired motor torque is pre-filtered by a multi-stage rate limiter. However, those functions are still parametrized experimentally by laborious test drives or on the test-bench. This paper addresses the model-based optimal parametrization of these rate limiters in automotive drivability functions. For this, a recently published gear specific model is identified and validated for another gear position. In addition, a linear transfer function of multi-stage rate limiters is approximated by the transient input describing function method. The characteristics of this transfer function are used to reduce the number of design variables for the multi-objective optimization of a two-stage rate limiter for drivability control.
机译:汽车传动系统中的负载变化可能会导致不舒服的振动。适当的电动机转矩控制可以解决此问题。通常,在这些驾驶控制功能中使用了两个自由度结构。在这种结构中,所需的电动机转矩通过多级限速器进行了预过滤。但是,这些功能仍需通过费力的测试驱动器或在测试台上进行实验设置。本文讨论了在汽车驾驶性能中这些速率限制器的基于模型的最佳参数化。为此,识别最近发布的齿轮专用模型并针对另一个齿轮位置进行验证。另外,多级限速器的线性传递函数通过瞬态输入描述函数方法进行近似。该传递函数的特性用于减少可驾驶性控制的两级速率限制器的多目标优化设计变量的数量。

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