Energy output control method of linear motor type electromagnetic active suspension

Abstract

The invention relates to the technical field of automotive electronics, in particular to an energy output control method of linear motor type electromagnetic active suspension. The method includes thesteps that the external power supply threshold value Emin of a power source is set, the ideal power Ec of a system is calculated, Emin is compared with Ec, and when Ec is smaller than Emin, actual voltage Ur is output according to the formula Ur=Ua; when Ec is larger than or equal to Emin, the value of the actual voltage Ur is calculated according to actual control force F, armature circuit resistance Ra, the average air gap magnetic density Bdelta of the position where a linear motor moving coil is located and the suspension stretching and retracting speed v, and voltage output is conductedbased on the obtained actual voltage value; actual current Ir is calculated according to the actual voltage Ur, and current output is conducted based on the actual current Ir. The whole control mode is more reasonable; on the premise of guaranteeing excellent kinetic performance, part of energy output of the power source is limited, the effect of protecting the power source is achieved, and the energy recovery ratio is indirectly increased.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to an energy output control method of a linear motor type electromagnetic active suspension. Background technique [0002] Active suspension can significantly improve the overall performance of the vehicle has long reached an industry consensus, but high energy consumption has been one of the main factors limiting its promotion in the market. The active suspension using electromagnetic linear motor as the actuator provides an opportunity to solve this contradiction. The linear motor can use the principle of electromagnetic induction to convert the vibration energy of the vehicle into electrical energy and feed it back to the motor, achieving the purpose of reducing energy consumption while improving vehicle performance. [0003] The traditional linear motor type electromagnetic active suspension only focuses on improving the dynamic performance of the vehicle, and on...

AI Technical Summary

Problems solved by technology

Using this control method for voltage and current output, when the power supply is not enough to provide the ideal voltage U a , if the system still outputs the voltage U a If the output is performed, the power supply will be fed, and the power supply will be damaged. At the same time, the energy consumption is large, and the energy recovery ratio is greatly reduced.

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