Design And Implementation Of Trailer Speed Control System For Towing Tank

Trailer of towing tank is the basic equipment which is used for performance test of ship, and which role is to drag ship model or others for uniform motion in the tank, to measure the relevant performance parameters of ship after speed stable , to prediction and validation of the merits or inferiors of hull form design . As trailers uniform model accuracy directly affects the velocity and the accuracy of test results, which must be equipped with good speed control system which have high precision and immunity in order to ensure tow-speed precision movement. The main task is control system design and research of trailer of towing tank fully digital DC converter control system.It detailed description and analysis the principle of trailer of towing tank in this paper, and in conjunction with the control system performance requirements identified by four DC motor as a four wheel drive motor. Designing of the current loop, double loop speed ring of DC speed control project, and using the torque control mode from the effective solution of the four trailers on the DC drive motor theoretical speed synchronization and load balancing, and other issues. As trailers often repeated in orbit for the campaign drive system must be reversible speed control system should be adopted. It is focused on the reversible logic without circumfluence speed control system.Large DC motor speed control system generally use the SCR technology to achieve, this paper give SCR installations and DC motor mathematical model, according to this model, a current loop, respectively, and speed design and analysis of central verified. Against the system of nonlinear, time-varying factors such as disturbance and outside, the paper will be fuzzy control and PI control of combining the design of the fuzzy self-tuning PI controller, and gives a fuzzy control lookup tables.This paper is received by the basic structure and engineering system. It introduce the production of Siemens SIMOREG DC Master 6RA70 fully digital DC converter and designs the device start-up steps and parameter settings at first. Second, it designs the remote monitoring system, greatly facilitate and simplify control of the towing operation. Finally, through the EMC design of the fully digital DC converter control system, improving the system's anti-jamming capability.Finally, through digital simulation of the system that under the control of the conventional PI controller and fuzzy self-tuning PI controller under, gives the test results waveform of the system debugging operation the at the scene .After a period of trial operation of the system ,proving that works well and achieves the desired objective of the design.