3-d Motion Simulator Design And Engineering To Achieve

In order to test the anti-jamming capability of a ship-borne antenna stable tracking system and to inspect if the antenna can always track the satellite with high accuracy to ensure continuous communication, a motion simulator in laboratory is need. By simulating the motion of a ship in varying sea status, an antenna stable tracking system can be tested on the platform of a motion simulator which will reduce the development cost and time of antenna stable tracking systems dramatically.A three-freedom motion simulation system is designed for the test of ship-borne antenna stable tracking systems. It can simlulate ships' single or compound weaving motion in revolving direction of X ,Y and Z axes. The overall design of the system is introduced firstly and a suit of driver unit consisting of an AC synchronous motor and a servo driver is chosen to construct the speed contorl close loop. Emphasis is placed on the system hardware and software design. In the part of hardware design, four modules including micro-processor,axis angle acquisition,communication of CAN bus and RS-232 as well as electric control are fulfilled by components selection and circuit design. In the software design counterpart, three modules including data acquisition,servo control,communiction and monitoring software on PC are domanstrated explicitly by giving the detailed program process. On the basis of system modeling, the simulation of traditional PID and intelligent PID control algorithm is carried out and analyzed. In the end, a compound control algorithm consisting of intelligent PID and forward-feedback algorithm is applied in the practical system and satisfying result is achieved. Now, this three-freedom motion simulation system has been delivered to use.