Control Of Arresting Process For Carrier Aircraft Considering Kink-Wave

In order to make the carrier-based aircraft stopped within the given distance in the deck, thearresting system must be used. Oversea research concerning about arresting system have alreadyachieved a great success. But most of the related results are not made public. The ones that can beaccessed and used as references are very few. In recent years, many domestic scholars have beendevoted to this field and made some progress. They mainly focus on the design of the hydraulicsystem, the design and control of the arresting force, dynamic problems and optimal control of thearresting process. In these studies, either the elasticity of the arresting cable is ignored or if it isconsidered, the wave phenomenon in the cable is neglected. As a matter of fact, the initial impact ofthe arresting hook on the cable can result in wave propagation along the cable. As a result, the cablebetween the hook and the deck sheave would be triangle-shaped instead of being straight and the kinkwave is generated. This thesis is to study the characteristic of the wave propagation and its influenceon the arresting process.The overloading of the aircraft, the final distance of arrestment and the tension in the arrestingcable are all directly influenced by the arresting control law, so the design and realization of thecontrol law is of much significance. Taking the hydraulic damping force as a control input for thearresting process, the dynamic model for ideal arrestment without the kink-wave is established first.Based on the constant hook load condition during the arresting process, a set of ideal trajectory isobtained with the help of optimal control method. Afterwards, the propagation characteristic ofkink-wave that travels between the deck sheave and the hook is analyzed. Then the discretekink-wave model is obtained and employed to the PID control of the arresting process in tracking theideal trajectory. The result shows that when taking kink-wave into account, the hook load will vibrateat the initial period of the arresting process, which is consistent with the experimental result of theAmerican military standard MIL-STD-2066.