The simulation model of an unloading welding transformer was established on the basis of MATLAB software, and the modeling principle was described in detail in the paper. The model was made up of three sub models, i....The simulation model of an unloading welding transformer was established on the basis of MATLAB software, and the modeling principle was described in detail in the paper. The model was made up of three sub models, i.e. the linear inductor sub model, the non linear inductor sub model and series connection sub model controlled by current, and these sub models were jointed together by means of segmented linearization. The simulating results showed that, in the conditions of the high convert frequency and the large cross section of the magnet core of a welding transformer, the non linear inductor sub model can be substituted by a linear inductor sub model in the model; and the leakage reactance in the welding transformer is one of the main reasons of producing over current and over voltage in the inverter. The simulation results demonstrate that the over voltage produced by leakage reactance is nearly two times of the input voltage supplied to the transformer, and the lasting time of over voltage depends on time constant τ 1. With reducing of τ 1, the amplitude of the over current will increase, and the lasting time becomes shorter. Contrarily, with increasing of τ 1, the amplitude of the over current will decrease, and the lasting time becomes longer. The model has played the important role for the development of the inverter resistance welding machine.展开更多
为了实现焊接过程中对复杂焊缝的焊接,运用Pro/Toolkit与Visual Studio 2005搭建的Pro/Engineer二次开发环境对PUMA焊接机器人进行参数化建模,实现在Pro/Engineer中快速调查整机器人主要参数;运用D-H参数法在MATLAB中对机器人建立空间...为了实现焊接过程中对复杂焊缝的焊接,运用Pro/Toolkit与Visual Studio 2005搭建的Pro/Engineer二次开发环境对PUMA焊接机器人进行参数化建模,实现在Pro/Engineer中快速调查整机器人主要参数;运用D-H参数法在MATLAB中对机器人建立空间位姿模型,运用MATLAB软件对机器人进行运动仿真,精确控制焊枪嘴运动轨迹,以实现对复杂焊缝的焊接。仿真结果表明,建立的仿真模型可以实现对复杂焊缝的焊接。展开更多
文摘The simulation model of an unloading welding transformer was established on the basis of MATLAB software, and the modeling principle was described in detail in the paper. The model was made up of three sub models, i.e. the linear inductor sub model, the non linear inductor sub model and series connection sub model controlled by current, and these sub models were jointed together by means of segmented linearization. The simulating results showed that, in the conditions of the high convert frequency and the large cross section of the magnet core of a welding transformer, the non linear inductor sub model can be substituted by a linear inductor sub model in the model; and the leakage reactance in the welding transformer is one of the main reasons of producing over current and over voltage in the inverter. The simulation results demonstrate that the over voltage produced by leakage reactance is nearly two times of the input voltage supplied to the transformer, and the lasting time of over voltage depends on time constant τ 1. With reducing of τ 1, the amplitude of the over current will increase, and the lasting time becomes shorter. Contrarily, with increasing of τ 1, the amplitude of the over current will decrease, and the lasting time becomes longer. The model has played the important role for the development of the inverter resistance welding machine.
文摘为了实现焊接过程中对复杂焊缝的焊接,运用Pro/Toolkit与Visual Studio 2005搭建的Pro/Engineer二次开发环境对PUMA焊接机器人进行参数化建模,实现在Pro/Engineer中快速调查整机器人主要参数;运用D-H参数法在MATLAB中对机器人建立空间位姿模型,运用MATLAB软件对机器人进行运动仿真,精确控制焊枪嘴运动轨迹,以实现对复杂焊缝的焊接。仿真结果表明,建立的仿真模型可以实现对复杂焊缝的焊接。
