An energy-optimized adaptive cruise control method and system considering motor energy consumption

Abstract

The invention provides an energy-optimized adaptive cruise control method and system considering motor energy consumption, belonging to the technical field of vehicle control. In the traditional adaptive cruise controller, the motor energy consumption is introduced as an economic evaluation index, and a tracking evaluation index, a comfort evaluation index and a safety constraint are established at the same time. Based on the adaptive weight parameters, the above performance indicators are comprehensively considered and To adapt to the performance requirements under different driving conditions, construct the objective function of the problem to be optimized and its constraints, obtain the optimal torque, and act on the controlled vehicle through the actuator to complete the car-following of the controlled vehicle and improve the motor performance. work efficiency. The invention takes the acceleration disturbance of the preceding vehicle into consideration when designing the energy-optimized adaptive cruise controller, so that the controlled vehicle takes measures such as acceleration and deceleration in time to track the change of the driving state of the preceding vehicle, thereby improving the speed tracking of the vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to an energy-optimized adaptive cruise control method and system that considers motor energy consumption. Background technique [0002] With the deepening of the research on adaptive cruise control technology, people's performance requirements for ACC (Adaptive Cruise Control) are becoming more and more diversified. The traditional ACC pays more attention to the tracking and comfort of the vehicle when the vehicle is following the slack, and under the trend of "green energy saving" as the future development of automobiles, improving the economy of ACC vehicles has become a very meaningful task. At present, there have been some studies on economic cruise control, but most of them are based on the condition that the future driving path of the vehicle is known, offline use of dynamic programming or the Pontryagin minimum principle to obtain the global optimal economic speed, bu...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides an energy-optimized adaptive cruise control method and system that considers the energy consumption of the motor, and solves the problem of large amount of calculation that is difficult to implement online and economical evaluation in the existing economical cruise control technology. Improper selection of indicators and failure to consider the problem of the front vehicle disturbance

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