基本信息:
- 专利标题： CURRENT MEASURING APPARATUS FOR USE WITH ELECTRIC MOTORS
- 专利标题（中）：电流测量装置与电动马达使用
- 申请号：EP08750574.9 申请日：2008-05-12
- 公开(公告)号：EP2156199A1 公开(公告)日：2010-02-24
- 发明人： INTROWICZ, Ernest, Henry
- 申请人： TRW Limited
- 申请人地址： Stratford Road Sollhull B90 4AX GB
- 专利权人： TRW Limited
- 当前专利权人： TRW Limited
- 当前专利权人地址： Stratford Road Sollhull B90 4AX GB
- 代理机构： Tranter, Andrew David
- 优先权： GB0709200 20070512
- 国际公布： WO2008139178 20081120
- 主分类号： G01R19/00
- IPC分类号： G01R19/00 ; G01R22/00 ; H02P6/18
摘要：
A current measuring circuit for an electric motor provides an output indicative of the change in the current di/dt flowing in a phase of the electric motor over a measurement period of time. The circuit includes a current measurement element having a resistance; a switch which in use selectively permits transmission of a voltage dependent upon the instantaneous value of the voltage dropped across the current measurement element to a part of the circuit; and a switch controller which is adapted to operate the switch in response to timing signals supplied by the switch controller so as to define the measurement period of time.
公开/授权文献:
- EP2156199B1 CURRENT MEASURING APPARATUS FOR USE WITH ELECTRIC MOTORS 公开/授权日：2014-01-08
IPC结构图谱:
| G | 物理 |
| --G01 | 测量；测试 |
| ----G01R | 测量电变量；测量磁变量（通过转换成电变量对任何种类的物理变量进行测量参见G01类名下的 |
| ------G01R19/00 | 用于测量电流或电压或者用于指示其存在或符号的装置 |