发明授权
- 专利标题: Mass-flow sensor using aerodynamic damping
- 专利标题(中): 质量流量传感器采用气动阻尼
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申请号: US492015申请日: 1990-03-12
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公开(公告)号: US5000050A公开(公告)日: 1991-03-19
- 发明人: Robert E. Hetrick
- 申请人: Robert E. Hetrick
- 申请人地址: MI Dearborn
- 专利权人: Ford Motor Company
- 当前专利权人: Ford Motor Company
- 当前专利权人地址: MI Dearborn
- 主分类号: G01F1/20
- IPC分类号: G01F1/20 ; G01F1/28 ; G01F1/78 ; G01N33/38
摘要:
A fluid mass flow sensor uses the effect of aerodynamic drag on a vibrating object. The drag damps the resonance oscillations of the vibrator in an amount proportional to the mass flow. An electronic feedback circuit associated with the mass flow sensor has the effect of allowing for fast response time despite the use of a high Q vibrator and allows for electronic calibration of the device.
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