Integrated anti-rollover system and control method thereof

Abstract

The invention provides an integrated anti-rollover system and a control method thereof. A hydraulic oil tank is connected with left and right sides of the hydraulic cylinder through two oil paths; twobranch oil ways of the main oil way I are respectively communicated with the left front brake and the right shock absorber; a first one-way electromagnetic valve and a fourth electromagnetic valve are respectively arranged on the two branch oil paths; the left front brake is connected with the hydraulic oil tank through a first electromagnetic valve, two branch oil ways of the second main oil wayare communicated with the right front brake and the left shock absorber respectively, a second one-way electromagnetic valve and a second electromagnetic valve are arranged on the two branch oil waysrespectively, and the right front brake is connected with the hydraulic oil tank through a third electromagnetic valve; and an ECU opens the corresponding channel of the channel electromagnetic valveand the electromagnetic valve capable of increasing the oil path pressure of the brake according to the type of the steering request, and controls the closing time point of the electromagnetic valvegenerating the differential yawing moment and the anti-rollover moment to generate the differential yawing moment and the anti-rollover moment. Hysteresis of a hydraulic system is reduced, yawing moment and anti-rollover moment are coupled, and the anti-rollover effect is good.

Description

technical field [0001] The invention relates to the field of automobile safety, in particular to an integrated anti-rollover system and a control method thereof. Background technique [0002] As the most used means of transportation, automobiles provide great convenience for people's daily travel on the one hand, and on the other hand, they also pose a huge threat of traffic accidents to personal safety. Among them, due to the high center of gravity of commercial vehicles, they are often easily affected by centrifugal force when turning at high and low speeds, which may cause rollover accidents. [0003] In the prior art, many experts and scholars have carried out anti-rollover research of a single control system. Different single-system anti-rollover controls have different advantages and disadvantages, such as active suspension with large anti-rollover and anti-rollover torque, The anti-rollover effect is good, suitable for various vehicles, but additional hardware is req...

AI Technical Summary

Problems solved by technology

Among them, due to the high center of gravity of commercial vehicles, they are often easily affected by centrifugal force when turning at high and low speeds, which may cause rollover accidents

[0003] In the prior art, many experts and scholars have carried out anti-rollover research of a single control system. Different single-system anti-rollover controls have different advantages and disadvantages, such as active suspension with large anti-rollover and anti-rollover torque, The anti-rollover effect is good, suitable for various vehicles, but additional hardware is required, the cost is high, and the time lag of the electro-hydraulic suspension is too long, etc.; differential braking can be based on anti-lock braking system ABS or electro-mechanical braking EMB Wait to design the controller, which is easy to implement and low in cost, but the anti-rollover effect is limited; while the active steering control improves the vehicle’s rollover stability, it reduces the lateral acceleration, but reduces the vehicle’s turning ability, making the car ineffective. circumvent obstacles

The existing technology also integrates the above single controls, but only integrates the control programs, which can only solve the problem of program conflicts, but because the actuators are independent, they cannot be effectively integrated together, and it is impossible to achieve energy-saving and high-efficiency side protection. turn

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