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Embedded Software and Motor Control Libraries for PXR40xx

Embedded Software and Motor Control Libraries for PXR40xx

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Function GMCLIB_SvmStd_FLT<br />

Figure 4-75. Direct (u_a) <strong>and</strong> quadrature (u_b) components of stator reference voltage<br />

Figure 4-75 depicts the u α <strong>and</strong> u β components of the stator reference voltage vector U S<br />

that were calculated by the equations u α = cos( θ) <strong>and</strong> u β = sin( θ), respectively.<br />

Figure 4-76. Reference voltages u_ref1, u_ref2 <strong>and</strong> u_ref3<br />

The Sector Identification Tree, shown in Figure 4-77, can be a numerical solution of the<br />

approach shown in Figure 4-76.<br />

Figure 4-77. Identification of the sector number<br />

<strong>Embedded</strong> <strong>Software</strong> <strong>and</strong> <strong>Motor</strong> <strong>Control</strong> <strong>Libraries</strong> <strong>for</strong> <strong>PXR40xx</strong>, Rev. 1.0<br />

538 Freescale Semiconductor, Inc.

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