For the coordinated control of torque in the driving-mode switching process of a hybrid electric car with double-planetary-gear-based compound power split system, a control technique based on torque decoupling is adopted to solve out the objective torque of power source at different switching phases. On this basis, aiming at the problem of output torque ripple and the difficulty in accurately determining the actual torque of engine, a coordi-nated control strategy for driving-mode switching is proposed based on engine torque estimation and motor torque compensation, and a verification simulation is conducted on Matlab/Simulink platform. The results show that the proposed strategy can effectively reduce the output torque ripple and vehicle jerk in driving-mode switching process.%为对带双行星排复合功率分流的混合动力轿车驱动模式切换过程中的转矩进行协调控制，采用基于转矩解耦的控制方法来求解不同切换阶段动力源的目标转矩。在此基础上，针对切换过程中输出端转矩波动和发动机实际转矩难以精确确定等问题，提出了基于发动机转矩估计和电机转矩补偿的模式切换协调控制策略，并在Matlab/Simulink软件平台下进行仿真验证。结果表明，该协调控制策略能有效降低切换过程中输出端的转矩波动和整车的冲击度。
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