摘要
简要论述了汽车电子系统对传感器的要求,并介绍了磁性编码器的工作原理和性能特点。设计出一种采用新的高电阻率NiFeCr作为缓冲层的坡莫合金薄膜,并将此磁薄膜作为汽车的测速传感器。系统具有结构简单、抗恶劣环境、高速响应、成本低和可靠性高的特点。保证汽车在行驶中准确、可靠地测速。
This paper briefly described the request of automobile electron system to the sensor, and introduced the magnetic rotary encoder principle of work and characteristic. A new kind of high resistivity film with NiFeCr shock layer was designed, which as the speed-measuring sensor in automobile system. The characteristics of this system are simple structure, anti-adverse circumstance, high speed response, low cost and high reliability. All these guarantee a accurate and reliable surveying result.
出处
《仪表技术与传感器》
CSCD
北大核心
2008年第9期76-77,98,共3页
Instrument Technique and Sensor
基金
北京市科技计划项目(汽车用磁电阻编码器的研制)
关键词
磁编码器
薄膜磁阻
四倍频电路
测速
magnetic rotary encoder
magnetoresistance
quadruplicated frequency circuit
speed-measuring
