Basic controlling algorithms for the pneumatic elements stiffness of a vehicle suspension
Abstract
Introduction. The article is devoted to the description of the basic algorithms for controlling the stiffness of pneumatic elastic suspension elements of a vehicle with two stiffness values adjusted to disconnecting part of the working volume. This scheme of variable stiffness of the vehicles suspension is actively being implemented by world leaders of the industry. It allows one to ensure a quick change in the stiffness of the elastic element without tangible energy costs, and a significant increase in the mass and layout volume of suspension systems.
The purpose of the scientific research was to increase the comfort and safety of passenger vehicles by changing the properties of the suspension system components with regard to current traffic conditions.
Methodology and research methods. To achieve the goal, the development of control logic for adjustable suspension systems has been carried out, which allowed creating an algorithm for software suspension control systems. The following block diagrams of the switching algorithms for general operating mode of the suspension and the current control of the elastic elements stiffness for maneuvering were presented: the change of lane, wave road, braking and turning. The flowcharts were given in the format of developing the complexity of logic from the simplest to continuously responding ones to the environment.
Scientific novelty and results. The results of computer algorithms modeling for the current control of elastic elements stiffness for a number of maneuvers have been presented to consider general operating modes of the suspension. The simulation results showed the effectiveness of the system of pneumatic elastic suspension elements with variable stiffness. The operation of this system provided a significant reduction in the vibration load of passengers, together with a significant increase in a vehicle stability.
Practical significance. The developed logical circuits will make it possible to create a program for controlling the vehicle’s suspension, increasing its operational properties.
About the Authors
D. V. Yurlin
Federal State Unitary Enterprise “Central Scientific Research Automobile and Automotive Engines Institute” (FSUE “NAMI”)
Russian Federation
Russian Federation
design engineer
Moscow 125438
S. V. Bakhmutov
Federal State Unitary Enterprise “Central Scientific Research Automobile and Automotive Engines Institute” (FSUE “NAMI”)
Russian Federation
Russian Federation
D.Sc. (Eng), professor, Deputy CEO for Science (Research)
Moscow 125438
V. A. Kulagin
Federal State Unitary Enterprise “Central Scientific Research Automobile and Automotive Engines Institute” (FSUE “NAMI”)
Russian Federation
Russian Federation
design engineer
Moscow 125438
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Review
For citations:
Yurlin D.V., Bakhmutov S.V., Kulagin V.A. Basic controlling algorithms for the pneumatic elements stiffness of a vehicle suspension. Trudy NAMI. 2020;(1):20-35. (In Russ.)
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