Time consistency control method oriented to cooperative guidance simulation system

Abstract

The invention provides a time consistency control method oriented to a cooperative guidance simulation system. On the basis of the existing time system, the technologies of high-precision interrupt drive, data transmission delay feedback compensation, and delay accumulative error feedback compensation are added. The time consistency control method comprises the following steps: at first, the high-precision interrupt drive technology is utilized to introduce a high-precision clock signal and an interrupt pulse into the cooperative guidance simulation system to drive nodes in the system to operate synchronously; then, unexpected delay of a command in an optical fiber transmission network is taken into consideration, and data transmission delay feedback compensation is introduced to realize one-time compensation of transmission delay and fluctuation; and finally, aiming at the residence time error problem, dynamic delay accumulative error feedback compensation is put forward, and intervalmeasurement and multiframe compensation are utilized to finish the state elastic propulsion during the operating process of the system. With adoption of the time consistency control method, the existing cooperative guidance simulation system is enhanced, nanosecond-grade time control precision between the nodes of the simulation system can be realized, and the problem about time consistency control in the cooperative guidance simulation system is solved.

Description

technical field [0001] The invention belongs to the technical field of hardware-in-the-loop simulation, and in particular relates to a time consistency control method for a cooperative guidance simulation system. Background technique [0002] The multi-aircraft cooperative guidance simulation system is composed of test equipment, simulation models, and physical effect simulation equipment distributed in different test sites. It has the characteristics of many test nodes and a wide deployment range. In order to truly reproduce the logical timing of the combat process, it is necessary to control the time consistency of the nodes in the system. The time consistency control equipment is used to provide high-precision time information for the nodes. At the same time, the time delay error is calculated by monitoring the time stamp of the transmitted information in the system. The transmission delay and delay accumulation error are dynamically calibrated and compensated, so as to e...

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Problems solved by technology

[0003] At present, there is no mature time-consistency control method for cooperative guidance hardware-in-the-loop simulation test, the reasons are: (1) In some hardware-in-the-loop simulation environments, only the simulation environment is taken as a whole, and the interaction between subsystems in the simulation environment is not considered. time difference, or consider the time difference between subsystems, but think that the punctuality accuracy of the subsystem is within the allowable error, so no specific time consistency control is performed; (2) Even if some semi-physical simulation environments consider the time difference between subsystems However, since there is no need for collaborative interaction between aircraft, the time difference margin between subsystems in the existing hardware-in-the-loop simulation environment is relatively large, and the time consistency control method is too simple to achieve microsecond level and below time control

[0004] However, in the co-simulation environment, due to the participation of physical equipment, there are not only time differences between subsystems in the same simulation environment, but also time differences between different simulation environments. In the process, it will have a great impact on the collaborative environment, resulting in differences in the perception of the subsystems to the state of the entire collaborative simulation environment, such as the impact of timing errors on the system's decision logic (the feedback information that the target is destroyed is delayed due to the time difference Due to the missile strike command, the target was repeatedly attacked by mistake)

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