Signal Correction of Linear Hall for PMSM Control System
Qing Bi, Dingguo Shao, Jian Li · 2019
In order to reduce the cost of motor control system, this paper applies linear Hall sensor to detect the rotor position of PMSM. It proposes a solution to the problem of amplitude imbalance and phase offset of linear Hall sensor output signal, which adopts hardware filter and uses software algorithms to balance amplitude and correct phase. The paper builds the motor control platform based on Infineon XMC4400 controller, and carries out the experiment under the condition of high and low speed. The experimental results show that the amplitudes of the Hall sensor output signals are equal and the two signals are orthogonal. The effectiveness of the signal correction compensation method in this paper is verified.