Simulation method of power distribution and differential speed control between dump truck axles
A simulation method, dump truck technology, applied in the field of dump truck research, can solve the problems of endangering vehicle driving safety, loss of power, easy loss of steering ability, etc., and achieve the effect of accurate and convenient simulation research
Active Publication Date: 2017-10-17
GUANGZHOU ELECTRICAL LOCOMOTIVE
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Problems solved by technology
This process can be regarded as that when slipping or idling occurs, power will flow from other driving wheels to the slipping wheel or idling wheel in a large amount, resulting in a large loss of power and loss of power
If the steering wheel slips or idling, it is easy to lose the steering ability; if the middle and rear wheels slip or idling, it is easy to lose lateral stability, and phenomena such as "flicking" appear, endangering the driving safety of the vehicle
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[0036] The steps of the present invention are as follows:
[0037] A. In the first simulation analysis software, namely dynamic simulation analysis software Simpack, the articulated electric wheel dump truck model is established, and the articulated electric wheel dump truck model includes articulated body, front and rear vehicle frames, balance beam, front suspension system, Wheels, steering cylinders, and cargo box subsystems. This model includes 12 rotating joints, 3 spherical joints, 6 sliding joints, and 2 fixed joints, with a total of 42 degrees of freedom.
[0038] B. Establish the motor system model, controller model and wheel reducer model in the second simulation analysis software, i.e. Matlab / Simulink: the modeling of the motor system is divided into the mathematical modeling of the motor physical model and the motor drive control system Modeling, the motor used in the electric wheel of the articulated vehicle is an AC asynchronous motor, and its physical model is a...
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The invention relates to a simulating method for interaxle power distribution and differential speed control of a dump truck. The simulating method comprises the following steps of establishing an articulated type electric wheel dump truck model in first simulating analysis software, and establishing a motor system model, a controller model and a wheel rim speed reducer model in second simulating analysis software; separating the modeling of a motor system into the mathematic modeling of a motor physical model and the modeling of a motor driving control system, and connecting an interface module of the first simulating analysis software and an interface module of the second simulating analysis software to jointly simulate. A system model of a joint simulating study platform comprises a whole articulated vehicle dynamics model, a motor system model and a joint simulating model, wherein the whole articulated vehicle dynamics model is established through the first simulating analysis software; the motor system model is established through the second simulating analysis software; the joint simulating model is established through connecting of the interface module of the first simulating analysis software and the interface module of the second simulating analysis software. The simulating method has the advantages that the available real-time total power of the wheel axle is proportionally distributed, so the vehicle has good passing, acceleration and climbing properties during full load; the dynamics property during empty load and the rated power of the motor can also be realized.
Description
technical field [0001] The invention relates to the field of dump truck research, in particular to a simulation method for power distribution between dump truck axles and differential speed control. Background technique [0002] Traditional mechanical transmission vehicles rely on differentials to coordinate the speed of each wheel with the speed of the corresponding wheel center. For dump trucks driven by electric wheels, there is no mechanical connection between the wheels, and the motion states are independent of each other. In order to ensure that there is no slippage between the driving wheels when turning or driving on uneven roads, the vehicle will lose ground traction and excessive wear of the tires. , it is necessary to use an accurate model or an effective strategy for differential speed control. Differential speed control is one of the key technologies in the design of wheel-side electric drive vehicles, and it is also a problem that must be solved in the vehicle ...
Claims
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IPC IPC(8): B60K17/344B60K17/16
Inventor 石能芳李澍芩
Owner GUANGZHOU ELECTRICAL LOCOMOTIVE