Research on HIL Simulation of Underwater Thermal Power System
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摘要: 水下热动力半实物仿真试验台可提供仅次于鱼雷热动力系统热车功率试验置信度的试验手段。以实时仿真计算机、背压模拟装置、负载模拟装置、调速与驱动装置构成半实物仿真试验系统的核心，以比例和比例积分控制算法进行背压和负载压力的闭环控制，通过低通数字滤波改善数字仿真模型的稳定性，对数字仿真模型进行动态特性修正以实现半实物系统与实际系统特性的良好吻合，系统背压动态模拟精度达到了0.5%，转速和负载动态模拟精度达到了1.5%，整个半实物仿真系统获得了较高的模拟准确度。Abstract: A real-time simulation computer, a back-pressure simulation device, a load pressure simulation device, a speed adjusting and driving device form the core of a hardware-in-the-loop(HIL) simulation system for an underwater thermal power system. A proportional and a proportional-integral control algorithms are used in the back-pressure and load pressure closed loop control system. We adopt low-pass digital filters to improve the stability of the numerical simulation model, and modify the dynamic behavior of the model to make the HIL simulation system coincide with the actual torpedo thermal power system. Simulation results show that the dynamic simulation precision of the back-pressure, the load pressure and the rotary speed of engine reaches 0.5%, 1.5% and 1.5%, respectively. The system obtains high simulation accuracy.
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