Economical adaptive cruise control system and method suitable for various driving conditions

Abstract

The invention discloses an economical adaptive cruise control system suitable for various driving conditions. The system comprises a millimeter wave radar, a vehicle speed sensor, a driving working condition identifier, an ACC controller and an acceleration / deceleration executive device; a running architecture of the driving working condition identifier comprises a front vehicle speed calculationmodule, a front vehicle speed recording module, a characteristic parameter calculation module and a driving working condition identification module; a running architecture of the ACC controller comprises a front state judgment module, a control target and constraint condition generation module, a desired acceleration calculation module, an acceleration / deceleration switching module and a throttleopening / brake pressure calculation module. The system can identify the driving state in front, the control target and the constraint condition of the adaptive cruise system can be reasonably selectedaccording to the recognition judgment result, the dynamic change of the importance degree of each performance under different driving conditions can be adapted, and the energy consumption economy canbe improved in a targeted mode under various working conditions.

Description

technical field [0001] The invention relates to a vehicle adaptive cruise control technology, in particular to an adaptive cruise control system suitable for improving energy consumption economy under multiple driving conditions, and belongs to the field of automobile control systems. Background technique [0002] Autonomous driving is one of the main directions of today's automotive technology development. Adaptive cruise control (Adaptive Cruise Control, ACC) is the basic technology to realize automatic driving. All levels of automatic driving vehicles must have the ACC function. The installed volume of ACC has increased rapidly in recent years, and will continue to grow rapidly in the future. It is the general trend to become standard equipment. [0003] The ACC system perceives the driving environment ahead through the perception system (currently, the vehicle-mounted millimeter-wave radar is mostly used), and the controller gives the appropriate control amount through c...

AI Technical Summary

Problems solved by technology

The traditional ACC system is mostly designed to ensure safety, tracking and other basic performance. Although it can realize full-speed driving, the disadvantage is that when used in urban conditions with large speed changes and congestion, the self-vehicle accelerates and decelerates frequently. Poor energy consumption economy reduces the driver's willingness to use ACC and the market's acceptance of it

At this time, it is unnecessary to add economic considerations to the control target, which will increase the amount of calculation, waste hardware computing resources, and even weaken other aspects of performance

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