发明授权
- 专利标题: Force-measuring device using electromagnetic force compensation with constant power dissipation
- 专利标题(中): 力测量装置采用电磁力补偿,功耗恒定
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申请号: US12782390申请日: 2010-05-18
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公开(公告)号: US08309867B2公开(公告)日: 2012-11-13
- 发明人: Stephan Baltisberger , Thomas Köppel
- 申请人: Stephan Baltisberger , Thomas Köppel
- 申请人地址: CH Greifensee
- 专利权人: Mettler-Toledo AG
- 当前专利权人: Mettler-Toledo AG
- 当前专利权人地址: CH Greifensee
- 代理机构: Standley Law Group LLP
- 优先权: EP09160710 20090520
- 主分类号: G01G7/00
- IPC分类号: G01G7/00 ; G01G7/04
摘要:
A force-measuring device 1, particularly a balance, operates on the principle of electromagnetic force-compensation. An electric coil 53 is arranged to be movable in a magnet system 50. The coil has at least two windings W1, W2 and a current supply device PB having at least two partial current sources PB1, PB2, the current sources each assigned to a corresponding winding. A device CU controls and/or regulates the current supplied to the windings by the partial current sources in such a way that, dependent on a force L acting on the force-measuring device, a current I1, I2 is sent through each of the windings. The sum of the at least two electromagnetic forces which are thereby generated forms the compensation force, while, at the same time, the power dissipated by the coil always takes on a given predetermined value Ptg.
公开/授权文献
- US20100294573A1 CONTROLLED AND/OR REGULATED FORCE-MEASURING DEVICE 公开/授权日:2010-11-25
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