Driving Operation Behavior Analysis And Research Based On Inverse Problem Method

As people pay attention to the driving behavior, the analysis of driving behavior is mainly divided into two parts:the driver’s behaviors and the vehicle conditions. The former establishes driver model that is based on driver to study the driving operation behavior from the cause to the result, this method has to take into account many factors, although the model is complex, it can reflect the driving behavior well; According to vehicle conditions that has been changed by driver, the latter studies the driving operation behavior from the result to the cause. This method considers less factors, relatively has simple model and could analyze known operation behavior, provide theoretical support for the improvement of driving behavior.In this paper, the latter research method could be used. It analyzes the driving operation behavior, and then evaluates it based on the inverse problem method. Through the analysis of driving behavior, some character parameters that are needed in the research of driving operation behavior are required, such as throttle opening,the degree of clutch separation and combination, shift timing, braking and steering wheel angle and so on. These above parameters respectively represent driver operation behavior,such as the accelerator pedal, clutch pedal, shift lever, brake pedal and steering wheel mechanism, and this paper establishes identification model,and according to above parameters, this paper analyzes and evaluates driving operation behavior.First of all, Preparation must be done in order to establish the identification model, and then it is necessary to have an in-depth understanding of the vehicle system dynamics in order to better analyze the driving operation behavior from the perspective of inverse problem. Because of the importance of tire model in the dynamics, this paper analyzes influence factors on tire side slip characteristics in detail and simplifies tire model and then offers model improvement direction.Secondly, this paper establishes the identification model, the driving operation behavior is divided into longitudinal operation behavior and lateral operation behavior. In order to establish the model better, the two kinds of operation behavior are established respectively. The longitudinal operation behavior mainly contains the operation of accelerator pedal, clutch pedal, shift lever, brake pedal. This paper develops character parameters of the above driving operation. According to their correlation degree, this paper builds identification model of operation of clutch pedal and shift lever brake pedal. As accelerator pedal opening can be directly measured through the throttle opening, so identification model is no longer established; lateral operation behavior mainly contains the steering operation, this paper builds identification model of character parameters of the steering operation.Thirdly this paper verifies and optimizes the identification model.According to the test conditions, verifications will be divided into software simulation and real vehicle test, Carsim should be used in software simulation. In the simulation, a set of test conditions should be specified, the input of model should be driving parameters,such as engine speed, throttle opening, speed, longitudinal acceleration, lateral acceleration, the output of model should be character parameters of the above driving operation, such as the degree of clutch separation and combination, shift timing, braking and steering wheel angle and so on. For the model that does not meet the accuracy of identification, it is further optimized to meet the requirements.Finally, this paper analyzes and evaluates driving operation behavior. In order to facilitate analysis of the driving operation, this paper analyzes operation behaviors feature and builds operation characteristic parameters to evaluate the driving operation. Due to the driver’s intention expression is the organic combination of five operational mechanisms, single evaluation is not enough to accurately evaluate the operation behavior, this paper uses comprehensive fuzzy evaluation method and considers the five operational factors. This paper has significance to guide driving operation behavior.