This paper describes a power auto-control system working in salt water vat,which is installed in electric power station test,including system composition,working principle and stability analysis using phasic track theory.The seting of control parameters in also discussed.%介绍了船舶电站试验中负荷设备——盐水缸的功率自动控制系统,包括系统的组成、工作原理以及应用相轨迹法对系统进行稳定性分析,并对控制参数的设置进行简单的讨论.
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