轻型两栖汽车可升降底盘机构设计与控制方案仿真

为实现某轻型两栖汽车在不切断驱动力的前提下底盘可升降和车轮可提升，采用了平衡肘肘内动力传动技术。利用无刷直流电机带动蜗轮蜗杆副，驱动平衡肘旋转，通过控制平衡肘的位置实现底盘高度可调和车轮的提升；而发动机驱动力通过平衡肘肘内的链条传动传至车轮。采用数字PID控制方法，实现了平衡肘的位置控制。借助Matlab／Simulink对执行机构进行了仿真，仿真结果表明，利用无刷直流电机驱动能够实现平衡肘的快速转动，进而实现底盘的升降和车轮的提升。

Design and Simulation of Light Amphibious Vehicle Lift Chassis Machine

In order to rise or fall the chassis and to lift the wheels of the Light Amphibious Vehicle,the technic of"drive transfer inside the balance-elbow"is introduced.Through worm transmission;the balance-elbow is drived to turn by the electromotor.The chassis can be lifted by controlling the position of the balance-elbow,while drive from engine is transfered to wheel inside the balance-elbow by the chain.The dignal PID control method is adopted to control the position of the balance- elbow.The executant machine is simulated in Simulink software and the simulation results show that drived by BLDCM balance- elbow can circumgyrate,so the chassis can be lifted.