Determining the charging voltage method of esasre suspension based on staged variable voltage charging

Abstract

The invention discloses a method for determining the ESASRE suspension charging voltage based on step-by-step variable voltage charging in the technical field of vehicle suspension control, and obtains the torque-speed characteristic curve of the energy-fed motor under different battery charging voltages according to experiments or numerical simulations , convert the torque-speed characteristic curve into the energy-feeding damping force generator-suspension relative motion speed characteristic curve of the energy-feeding damping force generator under different battery charging voltages, and use the minimum The square method is used for numerical fitting to obtain the fitting force-speed proportional coefficient; the least square method is used to obtain the charging voltage-speed proportional coefficient, and the real-time ESASRE suspension charging voltage is obtained according to the required ideal semi-active control force, so that the vehicle can be reduced according to the It is necessary to obtain and change the charging voltage of the battery in real time, so as to realize the real-time hierarchical control of the actual control force of the suspension system, and obtain the best possible ride comfort of the vehicle.

Description

technical field [0001] The invention belongs to the technical field of vehicle suspension control, and in particular relates to a method for obtaining a charging voltage of an electromagnetic energy-feeding semi-active suspension (ESASRE) based on staged variable voltage charging for vehicles. Background technique [0002] As an important structural and functional part of a vehicle, the suspension has a great influence on the overall performance of the vehicle. The traditional vehicle suspension cannot recycle the vibration energy between the axle and the sprung mass when the car is running, so that the above vibration energy is converted into heat energy by the traditional shock absorber and dissipated, resulting in energy waste. With the rapid development of electronic control technology in the automobile industry, energy-feeding suspensions that can realize the vibration reduction function and convert the vibration energy between the axle and the sprung mass into recyclab...

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Problems solved by technology

[0005] The defect of the above-mentioned prior art is that: the hysteresis current control method adopts a storage battery of constant voltage, so that the range of the speed "dead zone" at which the electromagnetic energy feed damping force generator feeds energy damping force is 0 is not narrowed. In addition, the current hysteresis control The accuracy is not only related to the ring width of the hysteresis loop, but also restricted by the allowable switching frequency of the power switching device, and has strong nonlinearity. Therefore, the disadvantage of using PWM control method is that the response speed is slow and the nonlinearity is also strong.

[0006] The Chinese patent application number is 201210054782.8, and the name is "A device and method for real-time control of electromagnetic energy-feeding semi-active suspension energy-feedback damping". Calculation method of charging voltage

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