A high-frequency signal injection technique was proposed for speed estimation in a field-orientation-controlled (FOC) interior permanent magnet synchronous motor (IPMSM) drive. The decoupled FOC IPMSM drive based on the stator current and flux was established to achieve a maximum torque-to-current ratio, with stator current measurements obtained using Hall effect current sensors. On the basis of the linear control of the two-axis stator current and speed loops, a systematic controller parameter design was developed by the pole placement method. A high-frequency voltage signal was injected into the IPMSM, and the resulting high-frequency current response was utilized to estimate the rotor position. The estimated rotor position was then employed to enable the speed estimation of the FOC IPMSM drive. The MATLAB®\Simulink toolbox was used to establish this simulation system, and all the control algorithms were realized with a TI 6713 digital signal processor and an F2812 microcontroller card to validate the proposed approach. Both simulation and experimental results confirmed the effectiveness of the proposed method.