DSP-based induction motor slip vector control system
2026-04-06 07:38:48··#1
Abstract:This paper introduces the structural characteristics of the TMS320LF2407 digital signal processor and the implementation method of the slip-based vector control. The system structure of vector control based on DSP and the software flowchart are given. Keywords: Digital signal processor, slip, vector control 1. Introduction Since Blaschke of Siemens proposed the theory of field-oriented control (i.e., vector control) in 1971, vector control technology has become the preferred solution for high-performance variable frequency speed control systems. It is based on the unified theory of motors, motor energy conversion, and coordinate transformation. Vector control simulates an AC motor as a DC motor, decomposing the stator current vector into torque and excitation components through coordinate transformation. Since these components are decoupled, they can be controlled separately. However, due to the nonlinear and strongly coupled mathematical model of an AC motor, its control is complex, especially ensuring the rotor flux linkage vector remains aligned with the M-axis, which significantly impacts the AC motor's speed regulation performance. Ordinary microcontrollers struggle to achieve high real-time performance and fast control. TI's high-performance 16-bit digital signal processor (DSP), the TMS320LF2407A, possesses strong computing power and fast real-time processing capabilities, making it ideal for high-performance control of three-phase asynchronous motors. Furthermore, it fully considers the hardware structure required for optimized motor control. This paper constructs a vector control system based on the TMS320LF2407A. Experiments show that the system exhibits good dynamic and static performance. For details, please click: DSP-based Induction Motor Slip Vector Control System