The invention discloses an improved double-port
internal model control method suitable for an unknown input
tracking system, which is used for improving the tracking capability and disturbance suppression capability of the unknown input
tracking system so as to meet higher-precision tracking control requirements. A standard dual-port
internal model method requires input signals of a known
system,so that the standard dual-port
internal model method cannot be used in an unknown input
tracking system. According to the improved dual-port internal
model control method provided by the invention, the
control effect of the dual-port internal model can still be realized under the condition that the input is unknown; and meanwhile, the tracking capability and the disturbance suppression capabilityof the
system are improved. According to the method, the limitation of a standard dual-port internal
model control method is broken through, the idea of internal
model control is used under the condition that input is unknown, the tracking capacity and disturbance suppression capacity of the
system are effectively improved, and the unknown input tracking system can obtain higher tracking precision.