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A Torque Distribution Method to Improve Power Cycle of Distributed Electric Drive Chassis

A torque distribution method and power circulation technology, which is applied in the field of torque distribution to improve the power circulation of distributed electric drive chassis, can solve problems such as not considering the economy of the whole vehicle, so as to improve energy utilization efficiency, reduce energy consumption, improve The effect of power cycling

Active Publication Date: 2022-03-25
尚元智行(宁波)科技有限公司
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  • Application Information

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Problems solved by technology

But it also only considered the driving stability, and did not consider the economy of the whole vehicle.

Method used

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  • A Torque Distribution Method to Improve Power Cycle of Distributed Electric Drive Chassis
  • A Torque Distribution Method to Improve Power Cycle of Distributed Electric Drive Chassis
  • A Torque Distribution Method to Improve Power Cycle of Distributed Electric Drive Chassis

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specific Embodiment

[0045] A torque distribution method to improve the power cycle of the distributed electric drive chassis, such as figure 1 shown, including the following steps:

[0046] (1) Collect the signal from the sensor

[0047] Collect the signals of the required sensors through the vehicle CAN communication network, including: obtaining the longitudinal acceleration a of the vehicle body through the inertial measurement unit IMU x , lateral acceleration a y , yaw angular velocity ω z and heading angle β z , the torque T of each wheel of the car is obtained through the motor controller i and rotational speed ω i , obtain the steering angle δ of the front axle through the steering motor f and the rear axle steering angle δ r , and obtain the longitudinal coordinate information x of the GNSS navigation system e and horizontal coordinate information y e (The coordinates are calculated from the latitude and longitude and the reference origin);

[0048] (2) Calculate the desired st...

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Abstract

The invention discloses a torque distribution method for improving the power cycle of a distributed electric drive chassis, which is characterized in that it includes the step of calculating the set vector of the vehicle's expected state according to the sensor signal and the seven-degree-of-freedom vehicle model of the four-wheel drive vehicle; according to the sensor signal And the steps of estimating the set vector of the actual state of the vehicle by the two-degree-of-freedom vehicle model; the steps of making the difference between the expected state vector and the estimated state vector to obtain the error state; the steps of calculating the set vector of the parasitic power of each wheel during vehicle driving; constructing a positive definite cost function , establish an optimization model with the goal of minimizing the cost function, and solve the model by search method or genetic algorithm to obtain the steps of the torque distribution strategy that can not only ensure the handling stability but also reduce the power cycle of the vehicle under this working condition, the advantages are Starting from the energy utilization efficiency of the tire output end, the energy utilization efficiency of the platform is improved while taking into account the stability during steering.

Description

technical field [0001] The invention relates to an automotive electronic control technology, in particular to a torque distribution method for improving the power cycle of a distributed electric drive chassis. Background technique [0002] The discussion of power cycle issues often focuses on heavy-duty transport vehicles, because most of the heavy-duty transport vehicles are multi-axle drives, and the unbalanced drive between axles or between wheels seriously affects tire wear and fuel consumption. With the development of electric vehicles and electric drive technology, it is gradually possible to use electric-driven transportation platforms to transport heavy goods. At present, my country's energy is still in a state of tension. From the perspective of reducing the power cycle, the optimal distribution of the driving torque is carried out, that is, the design of an electronic differential with the joint goal of reducing the power cycle can improve the use of the electric d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/02B60W40/00B60W40/10B60W40/105B60W50/00
Inventor 马芳武申棋仁代凯冯曙吴官朴张豪斌
Owner 尚元智行(宁波)科技有限公司
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