Automobile cruise control method

Abstract

The invention provides an automobile cruise control method. The automobile cruise control method includes the steps that S1, the cruise speed Vs and a cruise control transition region (Vs-Vm, Vs+Vm') are set, a control signal is input, and a cruise control mode is executed; S2, a cruise controller acquires the current automobile speed V and judges the change condition of the automobile speed, if the current automobile speed enters the cruise control transition region (Vs-Vm, Vs+Vm') from the value smaller than Vs-Vm, the cruise controller calculates the accelerator proportionality coefficient k according to a first curve, if the current automobile speed V enters the cruise control transition region (Vs-Vm, Vs+Vm') from the value larger than Vs+Vm', the cruise controller calculates the accelerator proportionality coefficient k according to a second curve, the horizontal coordinates of the first curve and the second curve are the current automobile speed V, the longitudinal coordinates of the first curve and the second curve are the accelerator proportionality coefficient k, and k ranges from 0 to 1; S3, an ECU outputs accelerator signals according to the formula of A=A0+kA1 to control the opening of a throttle. The method has the remarkable advantages that performance is safe and reliable, the structure is simple, implementation is easy, the automobile driving process is more stable, cruise control is adopted, the two feet of a driver can be released, and the hurt caused by fatigue driving is reduced.

Description

technical field [0001] The invention relates to a vehicle speed control system, in particular to a vehicle cruise control method. Background technique [0002] With the continuous development of the automobile industry, automobiles have become the main means of transportation for people to travel. In the process of driving a car, the driver not only needs to concentrate on observing the surrounding driving environment, but also needs to constantly step on the accelerator pedal to change the speed. It is easy to cause driving fatigue, so people have proposed a cruise control system. [0003] The so-called cruise control system is an electronic control device that uses electronic technology to ensure that the car runs stably at a set speed within a certain speed range without the driver needing to control the accelerator pedal. [0004] Throughout the research and development of vehicle cruise control at home and abroad, it can be found that different control strategies have ...

AI Technical Summary

Problems solved by technology

From the perspective of the stability and practicality of the cruise system, there is still a certain gap between China and foreign countries in this regard. For example, when the cruise function is suddenly turned on or off, the speed of the car may change greatly. The role of the car will shake, there is a great potential safety hazard, and the system structure is complex and the reliability is poor

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