System and method for controlling interconnecting state of transversely interconnected air suspension

Abstract

The invention discloses a system and method for controlling the interconnecting state of a transversely interconnected air suspension with the orientation to stability of vehicle body postures. All unsprung mass acceleration sensors transmit acceleration information to a signal pre-processing system, the output of the information pre-processing system is connected with input of an ECU 5, the output of a CAN bus communication system is connected with the input of the information pre-processing system and the input of the ECU 5, the interconnection state control algorithm is integrated in the ECU, the output of the ECU is connected with an interconnection state control driving module, the output of the interconnection state control driving module is connected with an interconnection solenoid valve through a control line, and the output of a steering wheel angle sensor is connected with the input of the ECU through a signal transmission line. The running smoothness of a vehicle on a poor road face is improved by reasonably controlling the interconnection state of the transversely interconnected air suspension, the control stability of the vehicle during high-speed steering is not influenced, and it is possible for the interconnected air suspension to be applied to a small-sized vehicle.

Description

Technical field [0001] The present invention relates to vehicle air suspension technology, in particular to a horizontally interconnected air suspension, and in particular to a control system and method for controlling the interconnection state of the horizontally interconnected air suspension. Background technique [0002] Air suspension has excellent damping characteristics and height-adjustable characteristics, and it is increasingly widely used in the field of vehicles. The interconnected air suspension has two structures: horizontal interconnection and longitudinal interconnection. The horizontal interconnection connects the left and right air springs on the same axle, and the longitudinal interconnection connects the front and rear air springs on the same side. Both structures have advantages and disadvantages: While greatly improving the ride comfort of the vehicle, the impact on the handling stability is relatively small, so the interconnection state can always be maintai...

AI Technical Summary

Problems solved by technology

However, the vertical interconnection structure is difficult to arrange in the chassis of small and medium-sized vehicles, and the horizontal interconnection structure is suitable for small and medium-sized vehicles, but the control problem of its interconnection state has not been reasonably solved. Hazards to vehicle safety

At present, there is no control technology or method for horizontally interconnected air suspension in the literature, so horizontally interconnected air suspension has not been popularized on small and medium-sized vehicles

Although there are literatures on interconnected oil-pneumatic suspension control and interconnected hydraulic suspension control that can provide reference for interconnected air suspension control, compared with interconnected hydraulic and oil-pneumatic suspensions, interconnected air suspension has its own unique characteristics. If the control strategy suitable for hydraulic and oil-pneumatic suspensions is directly applied to lateral interconnected suspensions, it will lead to transplantation defects such as inaccurate control and severe system vibration.

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