一种大负载三轴电动仿真测试转台的设计与实现

Design and Realization of Three-Axis Electric-Driven Testing Simulator with Large Load

设计开发了一种用于武装直升机火控系统综合试验的大负载三轴电动仿真测试转台 ,在简要介绍大负载、大扭矩、大功率、高频响、宽调速、高精度、超低速等性能特点和技术指标的基础上 ,详述了大负载仿真测试转台机械系统和驱动系统的设计方案 ,并用 ANSYS5 .7软件对台体进行了有限元模态分析 ,进而提出了大负载三轴电动仿真测试转台的数学模型、实时控制方案和控制模式 ,上位机软件采用了 Vx D技术 ,上位机与下位机的通讯采用了双缓冲机制。实际控制结果表明 ,该仿真测试转台具有很好的跟踪性能和控制品质 ,整个控制系统具有很强的鲁棒性 。

A new type of three-axis electric-driven testing simulator with large load is developed for the simulation and integrated experiment of fire control system on armed helicopter. The testing simulator has advantages of large load, high torque, high power, high frequency response, wide speed control, high precision, super-low speed and so on. The characteristics and the main technological requirements for the testing simulator are introduced and the schemes of mechanical system and the motor drive system are described. The finite element method (FEM) analysis for the testing simulator body is conducted by using the famous FEM software ANSYS5 7. With the establishment of mathematical model for the testing simulator with large load, the real-time control scheme and the control mode are also put forward. VxD (Virtual 'something' device) technique is adopted in the real-time software of upper computer. For the communication protocol in this system, double buffer mechanism of upper and lower computers is proposed. Result indicates that the testing simulator achieves a good performance and high control precision, and the whole control system has a strong robustness. The testing simulator has fulfilled tasks of real-time hardware-in-loop simulation tests of fire control systems for many kinds of armed helicopters.