| As an important part of the Army’s and main assault force, the self-propelled gun is called as ‘God of War’. With modern warfare transforming from the large-scale operations into local-area combat, of self-propelled gun has god off-road performance, outstanding maneuverability and excellent protection performance, becoming indispensable weapon in modern warfare. Application of self-propelled artillery on the battlefield is more advantageous to continuously implement fire support, making the artillery, the infantry and motorized infantry fighting closer together. With the development of future warfare, the mobility of self-propelled artillery needs to improve. If we only rely on increasing the engine power to increase the mobility of self-propelled artillery, the anticipated goal can’t be achieved. If there is no good supporting suspension system, while the speed is increased, the vehicle body vibration will be increased, thereby affecting fight, even normal driving. So studying advanced suspension becomes more important. The semi-active suspension technology is low energy consumption, high reliability, low price and close to the performance of active suspension. For the advantages of semi-active suspension technology,this paper mainly carried out further research based on magnetorheological damper self-propelled artillery semi-active suspension technology has been studied, the main contents are as follows:(1)This paper cited the simplified design method of the shear valve type MR damper,designed MR damper for self-propelled gun suspension system and fully considered the interrelatedness of circuit design and structural design. The magnetic field finite element of the MR damper was analyzed using ANSYS software, and the relationship between pistonspeed and the damper output size in different current was got, and the MR damper simplified mechanical model was obtained by polynomial fitting.(2)The pavement domain model and the three-dimensional surface model for ADAMS were established. Then the vibration shape and system response were analyzed for self-propelled artillery suspension subsystem, and the influence of damping on the suspension of the performance index was researched.(3)The self-propelled artillery virtual prototype was established. The self- propelled artillery driving on different typical road surfaces was simulated dynamics using ADAMS software. Compared with the vehicle body vibration acceleration and the pitch angular acceleration of the passive suspension system, the performance of suspension system with MR damper significantly is better than the passive suspension system.(4)We proposed a force tracking control method, using the form of inner and outer ring achieving the force tracking control method of self-propelled artillery suspension system.Inner loop uses PID to control and track outer to obtain target control. The outer ring uses variable universe fuzzy control. Simulation results show that the performance of semi-active suspension control system using variable universe fuzzy control is obviously better than the passive suspension system, and actual control can be good to track the target control. |
