Accelerator pedal signal simulation device used for vehicle drivability test evaluation

Abstract

The invention provides an accelerator pedal signal simulation device used for vehicle drivability test evaluation. The device comprises an input power supply interface, a power supply module, an accelerator pedal position signal input interface, an accelerator pedal position simulation setting module, an accelerator pedal position initial calibration module, a processor, an accelerator pedal position signal processing module, an accelerator pedal position mode switching module, a safety protection module, an accelerator pedal position signal output interface, and a display module. In the invention, an accelerator pedal signal of vehicle drivability test evaluation can be simulated to emit, the device is used for vehicle drivability test evaluation and can support up to 7 accelerator pedalposition changes, and a three-stage driving characteristic change characteristic is possessed. The device has a simple structure, power functions and simple operation. The number of required instruments is reduced, a test operation process is simplified, and manpower and time cost is reduced. In addition, safety protection measures are possessed to ensure that an accelerator pedal position signalis in a normal working range, and a vehicle driving safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of automobile testing, in particular to an accelerator pedal signal simulation device used for automobile drivability test evaluation. Background technique [0002] The accelerator pedal, also known as the electronic accelerator pedal, is mainly used to control the power output of the engine, thereby controlling the speed of the car. Step on the accelerator pedal, the engine speed increases, the power output of the engine increases, and the vehicle speed increases; lift the accelerator pedal, the engine speed decreases, the power output of the engine decreases, and the vehicle speed decreases. [0003] figure 1 It schematically shows an accelerator pedal position signal control system in the prior art, which mainly includes: an accelerator pedal, an accelerator pedal position sensor and an electronic control unit (Electronic Control Unit, hereinafter referred to as ECU). The accelerator pedal position sens...

AI Technical Summary

Problems solved by technology

Full-featured automobile drivability test equipment is relatively expensive and expensive, and it also needs actuators and control programs, so it is difficult to use in automobile drivability test tests

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