Energy feedback suspension system linear motor supercapacitor mode switching method

Abstract

The invention discloses an energy feedback suspension system linear motor supercapacitor mode switching method, which comprises the steps of 1, determining the minimum initial terminal voltage of a supercapacitor required by covering a motor optimal operating point through analyzing influences imposed on motor damping characteristics by variations in initial terminal voltage of the supercapacitor and being combined with the linear motor optimal operating point extracted by active control of an LQG controller; and 2, analyzing influences imposed on recovered energy of the supercapacitor by the initial terminal voltage of the supercapacitor at different duty ratios, and finally determining upper and lower thresholds of a charging and discharging operating mode of the supercapacitor by combining the minimum initial terminal voltage of the supercapacitor and the influences. The method disclosed by the invention can improve the energy recovery efficiency of an energy feedback suspension system while ensuring motor operating force requirements, that is, the vehicle handling stability, and thus reduces the fuel consumption of a vehicle body.

Description

technical field [0001] The invention relates to the field of automobile energy recovery, more precisely relates to the field of vibration energy recovery based on a linear motor. Background technique [0002] With the aggravation of energy crisis and environmental pollution, how to reduce the energy consumption of the vehicle body has attracted the attention of all walks of life. The proposal and research of energy-feeding suspension has a high response. The energy-feeding suspension system can realize the recovery of part of the energy generated by the vibration of the vehicle body while ensuring the comfort of the vehicle body. Methods. In the paper "Development of Motor Actuator for Vehicle Active Suspension", the motor is applied to the energy-feeding suspension, and the control circuit for the energy-feeding active suspension is given, but there is no relevant research on energy recovery efficiency . The patent No.: N201410176613.0 patent "An energy-feeding suspensio...

AI Technical Summary

Problems solved by technology

The proposal and research of the energy-regenerative suspension has a high response. The energy-regenerative suspension system can realize the recovery of part of the energy generated by the vibration of the vehicle body while ensuring the comfort of the vehicle body. Methods

In the paper "Development of Motor Actuator for Vehicle Active Suspension", the motor is applied to the energy-feeding suspension, and the control circuit for the energy-feeding active suspension is given, but there is no relevant research on energy recovery efficiency

The patent No.: N201410176613.0 in the patent "A Energy-Feeding Suspension System and Control Method" only gives the control method for the energy-feeding suspension, but does not give the research on the efficiency of the energy-feeding

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