A Semi-Active Coordinated Control Method of Magneto-rheological Energy Feedback Suspension Damping and Power Generation

Abstract

The invention discloses a magneto-rheological energy-feeding suspension vibration reduction and power generation semi-active coordinated control method. The magneto-rheological damper and the energy-feeding power generation device are installed in parallel between the sprung mass and the unsprung mass, and the controller The driving current required by the magnetorheological damper is calculated according to the real-time collected vehicle running status signal and the power generation status signal of the energy-feeding power generation device, so as to realize the coordinated control of the optimal vibration reduction and power generation of the suspension. The present invention proposes an optimal control law for vibration reduction and power generation based on an adaptive energy distribution rate, and designs a magneto-rheological energy-feeding suspension vibration reduction and power generation semi-active coordinated control strategy in combination with the inverse model of the magneto-rheological damper. The rheological damper realizes the system's optimal vibration reduction and power generation integrated suspension performance, which is highly versatile and easy to implement.

Description

technical field [0001] The invention belongs to the field of vehicle engineering, and in particular relates to a control method for a rheology-feedback suspension. Background technique [0002] As the global energy problem becomes increasingly prominent, domestic and foreign vehicle engineering fields pay more and more attention to energy-saving and reuse technology. The vibration potential energy of the suspension system generated by the uneven road surface and the change of the body posture when the vehicle is running is mainly through the suspension damper and The form of heat energy is dissipated into the air, and the wasted energy accounts for about 14%-26% of the power output, which has considerable recycling value. At the same time, the magnetorheological semi-active suspension system has become a research hotspot in the field of international vehicle engineering since the 1990s, and it is expected to be popularized and applied in future intelligent vehicles. The res...

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Problems solved by technology

[0003] However, how to realize the optimal coordinated control of magnetorheological suspension vibration reduction and power generation after adding energy-feeding power generation device has not been paid much attention by scholars at home and abroad.

At present, the magneto-rheological energy-feeding suspension mainly uses energy-feeding power generation for the self-power supply of the magneto-rheological damper, which fails to give full play to the performance of suspension vibration power generation. In addition, the control of the energy-feeding suspension mainly uses the output characteristic adjustment of the energy-feeding power generation device. There are two methods of semi-active control with magneto-rheological damper, and there is no semi-active coordinated control strategy for optimal vibration reduction and power generation of magneto-rheological energy-feeding suspension

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