PMSM Servo Control Using Linear Hall Effect Sensors and Parameter Identification
碩士 === 國立交通大學 === 電機與控制工程系所 === 95 === This thesis presents the development of control methods based on a digital signal processor (DSP) for permanent magnet synchronous motors (PMSMs) and parameters identification. Including 1) a servo control architecture employing linear Hall effect sensors. 2) P...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/19996221267797430434 |
| Summary: | 碩士 === 國立交通大學 === 電機與控制工程系所 === 95 === This thesis presents the development of control methods based on a digital signal processor (DSP) for permanent magnet synchronous motors (PMSMs) and parameters identification. Including 1) a servo control architecture employing linear Hall effect sensors. 2) Parameter identification using single phase current drives motor with data acquisition card. First, we use linear type Hall sensor signal to calculate rotor position, and flux-oriented control (FOC) is achieved by generating current references in the three-phase stationary frame without the stationary-to-rotating reference frame transformation and its inverse. The speed can be generated by differentiation of rotor position in order to achieve speed control. The single phase current drives motor changes something by using three phase current in the stationary reference frame. This art use one phase current command products two complementary PWM signals. Speed control also can be carried out in this art. Parameter identification also uses the signal phase current driving art to drive motor with single-phase open circuit. Back EMF constant can be calculated by measuring the voltage from the open circuit. Motor inertia and friction constant are estimated using feedback of current and speed by RLS method. Finally, we use the instrument to measure the inductance and resistance. The instrument generates some kinds of frequency and peak value to obtain the result between rotor position and inductance/resistance.
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