The Application of Linear Motor for Semi-Active Suspension System Using Adjustable Damper
碩士 === 國立臺北科技大學 === 車輛工程系所 === 95 === This research aims on the design of a linear motor as an adjustable damper for semi-active suspension systems to improve ride comfort and to increase the handling stability for vehicle in driving. The adjustable damper can be classified as hydraulic type and ele...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/m5e973 |
| Summary: | 碩士 === 國立臺北科技大學 === 車輛工程系所 === 95 === This research aims on the design of a linear motor as an adjustable damper for semi-active suspension systems to improve ride comfort and to increase the handling stability for vehicle in driving. The adjustable damper can be classified as hydraulic type and electric type. The drawback of the hydraulic type is that system time constant is longer. The drawback of the electric type is that extra power is needed. This paper uses the principle to transform magnetic field into electricity to design an adjustable damper which needs no extra power. The power of the linear motor as an adjustable damper is provided by back-electromotive force which is produced by vehicle vibration in driving. The adjust strategy of damper constant in suspension system is based on Linear Quadratic Regulator. PWM control is used to make motor current achieve controller request. Finally, frequency response is analyzed to investigate advantage and disadvantage between the traditional suspension system and the semi-active suspension system.
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