无轴承异步电机控制系统实验平台设计

Experimental Platform Design of ControlSystem for Bearingless Induction Motors

针对无轴承异步电机复杂的多变量强耦合非线性系统 ,提出了利用电枢绕组气隙磁场定向原理 ,对电磁转矩和悬浮力进行解耦控制。为了满足其高精度的实时控制要求 ,本文以速度快、功能强的 TMS32 0 F2 4 0芯片为核心 ,设计了一套双 DSP数字化控制系统实验平台 ,详细介绍了其软硬件设计方案 ,并在此平台上对实验样机在恒速和升速过程中的悬浮情况进行了研究。结果表明 ,该实验平台能够可靠地完成复杂的解耦控制算法 ,达到了悬浮控制所需的高精度要求。

An air-gap-flux-oriented controller applied to realize decoupling control of magnetic torque and levitation force in the strong coupled complicated nonlinear control system of bearingless induction motors is presented. An experimental platform of digital control system for real-time control is designed on double-DSP(TMS320F240). And the design scheme of the software and the hardware is introduced. It is experimentally validated that the complicated decoupling control algorithm can be realized both in constant speed condition and in transient state when the speed is varied, and the high precision for stable levitation can be achieved.