电子油门踏板的磁场仿真和实验研究

Magnetic Field Simulation and Experimental Research of the Electronic Accelerator Pedal

摘要:

对于汽车电子油门踏板利用可编程霍尔传感器将踏板的位置变化转换为线性模拟电压输出,具有产品一致性好、寿命长等优点正越来越获得广泛应用；针对踏板磁钢片位置布局不良容易导致的传感器校准异常和输出非线性等问题,进行了踏板旋转件永磁磁路分析,并用ANSYS软件进行了磁场有限元建模仿真,分析了踏板旋转角度和传感器位置安装之间的影响因素,并在电子油门性能检测平台上进行了实验验证；实验结果表明,双路输出式电子油门踏板的输出线性度达到1.45%,同步度指标为0.12%,符合产品技术标准。

Abstract:

The used of the programmable sensor about automotive electronic accelerator pedal, changing the position of the pedal which is converted to linear analog voltage output, having the advantages of good product consistency and long life span, is more and more widely used. The wrong position of pedal’s magnets position is easy to cause the abnormal sensor calibration and the output signal’s nonlinear problem, analyzing the pedal rotating permanent of magnet magnetic. And magnetic field finite element analysis was carried out by using ANSYS software modeling and simulation, analyzing the influencing factors between the pedal rotation angle and position sensor installed, which is verified in the electronic accelerator pedal’s testing system. The experimental results show that the dual type electronic accelerator pedal’s output linearity is 1.45%, synchronous index is 0.12%, which is conformed to the product technical standard.