Acceleration-adjustable self-adaptive cruising control system and method

Abstract

The invention provides an acceleration-adjustable self-adaptive cruising control system and method. The system comprise an ACC controller, a wheel speed sensor and a laser radar sensor; the wheel speed sensor is used for measuring the speed of the vehicle; the laser radar sensor is used for measuring the speed of a front vehicle and the distance between the front vehicle and the vehicle; the ACC controller comprises a judging module, a calculating module and a comparing module; the judging module judges whether an ACC mode is entered or not according to the input speed of the front vehicle andthe distance between the front vehicle and the vehicle; the calculating module is used for calculating the theoretical distance between the front vehicle and the vehicle; and the comparing module isused for calculating the predicted acceleration of the vehicle and transmitting the predicted acceleration of the vehicle to an executor for execution. According to the invention, the acceleration ofthe vehicle of a user can be changed according to the acceleration of the front vehicle, so that the distance between the front vehicle and the vehicle of the meets the requirement of safety, and thechange rate of the acceleration and deceleration of the vehicle of the user is small.

Description

technical field [0001] The invention relates to the field of smart cars, in particular to a control system and control method for adaptive cruise with adjustable acceleration. Background technique [0002] With the deepening of the global energy crisis, the government and automobile companies realize that energy saving and emission reduction are the main direction of future automobile technology development, and the development of electric vehicles is the best way to solve the problem, and braking energy recovery is a prominent feature of electric vehicles . [0003] The adaptive cruise control system can use on-board sensors to detect the distance between the host vehicle and the vehicle in front as well as the speed of the vehicle in front. According to the ACC control algorithm, the system can make the vehicle drive at the expected safe inter-vehicle distance calculated by the distance strategy by controlling the target driving torque of the motor, the magnitude of the b...

AI Technical Summary

Problems solved by technology

In addition, when the ACC system on a traditional car decelerates, sometimes the wheels are properly braked through the coordination of the brake anti-lock braking system and the engine control system, and the energy is directly lost in the form of heat during mechanical braking.

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