The dynamic performance of the liquid power coupling speed system isanalyzed and discussed . the mathematical models and compensation methods controlled by microcomputer are proposed . the load balance of the multi - motor operation is realized in the system 分析了液力耦合式调速系统的动态性能,提出了微机控制的数学模型和补偿控制的计算方法,实现了多台电机拖动负载平衡运行的控制目标。