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METHOD AND SYSTEM FOR SAFE LIMITING OF TORQUE OVERLAY INTERVENTION IN AN POWER ASSISTED STEERING SYSTEM OF A ROAD VEHICLE
METHOD AND SYSTEM FOR SAFE LIMITING OF TORQUE OVERLAY INTERVENTION IN AN POWER ASSISTED STEERING SYSTEM OF A ROAD VEHICLE
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机译:道路助力转向系统中扭矩叠加干预的安全限制方法和系统
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摘要
Disclosed herein is a method and arrangement for safe limiting of torque overlay intervention in a power assisted steering system of a road vehicle having an autonomous steering function arranged to selectively apply a steering wheel overlay torque to a normal steering assistance torque. A wheel self-aligning torque (fR) of the road vehicle (1) is modelled for a current vehicle velocity (v) and pinion angle (δw). A steering wheel overlay torque request (τR) is received. Based on the received steering wheel overlay torque request (τR) is provided a steering wheel overlay torque (τA) in hands-off applications limited to a safe set interval that is symmetrical around the modeled wheel self-aligning torque (fR).
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机译:本文公开了一种用于在具有自主转向功能的道路车辆的动力辅助转向系统中安全地限制扭矩叠加干预的方法和装置,该自主转向功能被布置为选择性地将方向盘叠加扭矩施加到正常转向辅助扭矩。针对当前车速( v I>)和小齿轮对道路车辆(1)的车轮自对准扭矩( f R Sub> I>)进行建模角(δ w Sub> I>)。 I>方向盘覆盖扭矩请求(τ R Sub> I> )已收到。根据接收到的方向盘重叠扭矩请求(τ R Sub> I>),提供方向盘重叠扭矩(τ A Sub> I> >)在不受限制的安全设置间隔中使用,该间隔围绕模型的车轮自对准扭矩( f R Sub> I>)对称。
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