Invention Grant
- Patent Title: System for seamless estimation of speed and/or position, including standstill of a permanent magnet rotor of an electric motor
- Patent Title (中): 用于无缝地估计速度和/或位置的系统，包括电动机永磁转子的静止
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Application No.: US12185868Application Date: 2008-08-05
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Publication No.: US08008878B2Publication Date: 2011-08-30
- Inventor: Fritz Rainer Götz , Viktor Barinberg
- Applicant: Fritz Rainer Götz , Viktor Barinberg
- Applicant Address: DE Nuremberg
- Assignee: Baumuller Nurnberg Gmb
- Current Assignee: Baumuller Nurnberg Gmb
- Current Assignee Address: DE Nuremberg
- Agency: Kremblas & Foster
- Agent Frank H. Foster
- Priority: EP07113873 20070806
- Main IPC: H02P21/00
- IPC: H02P21/00
Abstract:
Procedure for determining the electrical drive speed (ωef) and/or position (φe) in a permanent magnet rotor of a brushless electrical linear or rotary motor from a measurement of a multi-phase stator current (i1,i2). Speed is determined using a mathematical motor model (9). From the influence of a rotor reverse EMK that affects the stator current (i1,i2) conclusions are made about the rotor speed (ωef) and/or position (φe) and an appropriate model speed value (13,19,23) is generated.
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