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The electric active stabilizer suspension system, which can reduce roll angle, has been developed. This paper presents the configuration, function and effect of the system. The electric active stabilizer suspension system performs not only decreasing roll angle but good fuel consumption. The rotary actuator of this system consists of the DC brushless motor and strain wave gearing. It has been confirmed that the system achieved target roll angle and contributed to improve fuel consumption compare to hydraulic system.

In recent years improved emissions control, energy saving devices and safety features have become the driving forces in automotive manufacturing and technology. We have developed the Active-Rear-Steer system with an electro-mechanical actuator, which is an improved safety feature. It also features availability to mass production and a compact size. The system is highly responsive, increasing vehicle performance and stability, thus, enhancing the active safety of the vehicle.