针对感应电机滑模控制中线性滑模面存在动态性能好、稳态性差,积分滑模面稳态性能好、动态性能差的问题,结合两种滑模面的优点,提出了一种新的组合滑模面。通过设定阀值,根据偏差与阀值的关系,改变切换值的大小,从而达到线性滑模面和积分滑模面的平滑切换。同时针对控制系统中存在的抖振问题,设计一种带内负衰减控制的趋近律,使得切换开关在零附近呈现负衰减,保证了趋近阶段的快速性和准动滑模态的强鲁棒性,同时减弱了抖振。最后与传统的滑模控制策略进行了对比分析。分析结果表明,基于内衰减趋近律的组合滑模感应电机控制具有良好的动态、稳态性和鲁棒性,又有效地削弱了抖振。 Aiming at the problem that the linear sliding mode surface in induction motor sliding mode control has good dynamic performance, poor steady-state performance, good steady-state performance of integral sliding mode surface and poor dynamic performance, a new kind of sliding mode surface Combination of sliding surface. By setting the threshold, according to the deviation and the threshold value, change the size of the switching value, so as to achieve the smooth transition of the linear sliding mode and the integral sliding mode. At the same time, aiming at the chattering problem existing in the control system, a closed-form law of in-band negative damping control is designed so that the switch has negative attenuation near zero, which ensures the rapidity of the approaching phase and the strong quasi- Robust, while reducing the chattering. Finally, compared with the traditional sliding mode control strategy. The analysis results show that the combined sliding mode induction motor control based on the law of internal attenuation is close to law with good dynamic, steady state and robustness, and the chattering is effectively weakened.