Researchers in Hong Kong have developed a linear switched reluctance actuator for automobile active suspension system. This system can significantly improve suspension performance and collect suspension energy.
This invention by researchers at The Hong Kong Polytechnic University (HKPolyU) is a linear switched reluctance actuator for automobile active system. It is an electromagnetic design. The actuator's vertical position (i.e. the vehicles' horizontal level) can be adjusted easily. The of the suspension system is much shorter than conventional ones which consist of hydraulic and mechanical parts. It generates control forces to quickly absorb road shocks, suppress vibration and ameliorate both riding safety and comfort.
More importantly, the system can recycle the energy generated from the suspension to charge the vehicle batteries. Taking the electric vehicle "mycar" as an example, this system can save up to about 5% of the energy consumption when riding on countryside