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Based on time radiation modes, using the first several acoustic radiation adjoint coefficients to minimize the acoustic power from vibrating structure, is a new strategy in active control. State space equations from the structure vibration system with disturbing forces and controlling forces were presented. Using several point force actuators as control sources, the control model based on time adjoint coefficients was built via H∞ control theory. Taking a baffled rectangular plate as an example, the model was studied using one and two controlling forces respectively, and the effect of active control was discussed. Finally, the simulation results indicate that the acoustic power decreases obviously via H∞ control strategy, which effectively make the active control strategy based on radiation modes come true. Besides, the radiated power decreases more with more controlling forces, and it is demonstrated that using M controlling forces can counteract the first M radiated power.  