The Application of Linear Motor for Active Suspension System

• Main Authors: Hao-Ming Lee, 李浩銘
• Other Authors: Min-Hung Hsiao
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/an2858

碩士 === 國立臺北科技大學 === 車輛工程系所 === 96 === The Bose company applies Linear Motor with the suspension system which named by “Bose suspension system”. The system applies coil motor instead of absorber and spring . The response time of the system is better than hydraulic type. The system depends on the road state to improve ride comfort and to increase the handling stability for vehicle in driving. Because the force constant of the coil motor is smaller, so the system need bigger space to install and consume more electric energy. The paper designs linear synchronous motor which is installed with spring. The motor can be produced over 5000 N under the limit current. Because the force constant of the linear synchronous motor is bigger, so the system don’t need bigger space to install. The control strategy is based on LQR .The system uses PWM and switch transistor to satisfy the controller require. The system uses high sensitive position sensor in order to give accurate phase current of the motor and get better control effect. Finally, frequency response is analyzed to investigate advantage and disadvantage between the traditional suspension system and the active suspension system.