Affiliation:
1. Jilin University, Changsha Automobile Innovation Research Institute,
China Jilin University, National Key Laboratory of Automotive Chassis
Integration and Bionics, China
2. Chongqing Chang an Automobile Co. Ltd., China
Abstract
<div>A time domain analysis method of ride comfort and energy dissipation
characteristics is proposed for automotive vibration
proportional–integral–derivative (PID) control. A two-degrees-of-freedom single
wheel model for automotive vibration control is established, and the
conventional vibration response variables for ride comfort evaluation and the
energy consumption vibration response variables for energy dissipation
characteristics evaluation are determined, and the Routh stability criterion
method was introduced to assess the impact of PID control on vehicle stability.
The PID control parameters are tuned using the differential evolution algorithm,
and to improve the algorithm’s adaptive ability, an adaptive operator is
introduced, so that the mutation factor of differential evolution algorithm can
change with the number of iterations. The PID control parameter optimization
method presented in this article is versatile and can be used to optimize PID
control parameters under different conditions. This article provides the results
of PID control parameter optimization under different conditions. Based on PID
control and its parameter tuning, a time domain solution method for two types of
vibration response variables, their root mean square values, and the average
power of energy consumption vibration of automotive vibration PID control is
proposed. Two kinds of simulation test schemes are designed under urban driving
conditions, which are commonly used Class B road and pulse road, with a commonly
used vehicle speed of 60 km/h. The ride comfort and energy dissipation
characteristics of passive suspension and PID control are compared. The results
show that introducing energy consumption vibration response variables as a
supplement to the conventional vibration response variables is beneficial for
expanding the research and application scope of the automotive vibration and its
control; with the sprung mass acceleration deviation as the control input, PID
control can effectively improve the vehicle ride comfort, but it makes the
vibration energy dissipation characteristics worse.</div>