Design and hardware implementation of PMSM sliding mode control in SISO and MIMO cases

This paper introduces the principle and the implementation of two nonlinear control strategies for Permanent Magnet Synchronous Motor (PMSM) based on sliding mode theory. The Sliding Mode Control (SMC) strategy presents good performances in transient regime and robustness in respect with system uncertainties. The first adopted approach uses a (MIMO) feedback controller in order to control speed and stator direct current. The second one relays on a (SISO) approach and consists in controlling the electromagnetic torque and stator direct current by means of sliding mode. Moreover, an IP algorithm is used to control the rotor speed. The simple and practical control scheme is easily implemented on a PMSM driver using TMS320LF2407 DSP. The comparative effectiveness of the two proposed speed control approaches are validated experimentally.

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