Research On Simulation Of Towed System Of Underwa Ter Vehi Cle

As a kind of efficient ma r ine detection pl atform, underwater towed s ystem plays a very i mportant role in the deep- sea exploration development. Based on the background of t he de velopment needs of de ep-sea equipment technology and industry in our country, this paper studies the dynamic responses of new towed syst em carried on an underwater vehicle. This has great value in engineer ing application a nd scientific research.Firstly, the c haracteristics and appl ication r anges of previous r esearc h methods of unde r wa ter towed system are r evie wed completely. Then the lumped mass method is used t o solve the dynami c model of t he t ow cable, in which se veral ta il boundary c onditions are c onsidered. Furthermore, six degrees of freedom equations are applied t o simula te the motion of t he towed body whose kinematics and dynami c c oupling effects on cable are considered fully.Meanwhi le, the mathemati cal model of the steady state motion i s given. The numerical c alculation program of underwater towed system is finished and its r esults are verifie d by several previous test data and simulat ion result s.Sec ondly, the motion of a towed system with the body in t he steady state is anal yzed with di fferent main system parameters and environmental factors for the preliminary design of towed system. In addition, the under water cable laying motion is also modeled to make the test scheme for the sea trial of a n underwater vehicle.Finally, the cal culation of coupling be tween the cable and the towed body in the deep-sea t owe d system is given with different wor king c onditi ons, which study the dynamic c haracteristics of the compl ex c oupled system. The results can be used for the design of ac tive c ontrol la w of de ep-sea towed syste m.