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Gastops开发和测试了Makin Island USS Makin Island的推进控制算法

挑战

开发Makin Island USS Makin Island的推进控制算法

解决方案

将基于模型的设计与MATLAB和SIMULINK一起建模船的主要系统，开发和验金宝app证控制算法，并生成用于机载培训和HIL测试设置的代码

结果

  • 减少三分之二的时间仿真
  • 提早确定的关键设计问题
  • Models reused multiple times

“我们通过在建造复杂的海洋和飞机系统模拟风险来减轻风险。为了降低成本，我们在整个开发过程中使用MATLAB自动化模拟并重用模型。通过Simulink和Simscape电气中的模拟了解多域系统对我们的业务非常宝贵。”金宝app

肖恩·霍宁（Shaun Horning）
马肯岛号航空母舰。

马肯岛号号航空母舰（LHD 8）是一艘双轴两栖攻击船，可在美国海军进行服务。近850英尺长，有超过40,000吨的全部位移，Makin Island可以携带和发射数十架直升机和着陆飞船。与较早的同类蒸汽动力船不同，Makin Island使用了带有燃气轮机的混合电力推进系统，用于高速行进和电动机，以进行高速运行。新的推进配置具有两个35,000 bhp燃气轮机，两个5000 bhp AC电动机和六个柴油发电机。

GasTOPS used Model-Based Design with MATLAB®和Sim金宝appulink®to model the LHD 8 propulsion plant and develop its control algorithms, simulate the electrical power generation and distribution system, and create a simulator-stimulator system for real-time hardware-in-the-loop (HIL) testing of the machinery control system. This approach enabled the team to identify potential problems before sea trials began.

“With MATLAB and Simulink, we can rectify issues early in the design phase,” says Shaun Horning, vice president of Technical & Engineering Services at GasTOPS. “Before the ship is built, we can analyze crash astern, crash ahead, and other maneuvers, and generate a set of expected results to compare with actual sea trial results.”

挑战

LHD 8上的机械控制系统（MCS）控制着推进系统，包括电动机和燃气轮机驱动模式之间的过渡以及其他20多个主要的船舶系统。总共，MCS具有10,000多个输入和输出信号。

To develop control algorithms for the complex, first-of-its-kind propulsion system, GasTOPS needed an accurate model of the plant. Later, GasTOPS would need to run parametric studies, model electrical power generation and distribution, generate code for HIL test setups, and create a simulation engine for an onboard training system. GasTOPS required a flexible, multidomain modeling and simulation environment that supported all these activities.

解决方案

Gastops使用MATLAB和SIMULINK的基于模型的设计来加速LHD 8开发和分析项目。金宝appGastops工程师开发了推进系统的模拟模型，包括用于船体，金宝app螺旋桨，移动机，变速箱，电动机，发电机和燃气轮机的子模型。

这些子模型中有许多来自Gastops为类似项目开发的参数化组件的Simu金宝applink库。其他由OEM作为MATLAB或FORTRAN代码提供的，并集成到Simulink推进模型中。金宝app

Gastops在Simulink和stateFlow中建模了机械控制系统金宝app®，使用状态过渡图来描述驱动模式转换。

The engineers conducted an extensive test program in which MATLAB scripts were used to launch Simulink and collect the results of simulated ship maneuvers under various environmental conditions. In parametric studies, sweeps of propeller efficiency, hull resistance, and other key values were conducted to assess MCS performance and robustness.

电气装置,该团队使用仿真软件金宝appnd Simscape Electrical™ to model six diesel generators, eight transformers, numerous smart breakers, and the distribution system, as well as electric motors and other loads. They performed simulations to evaluate the system response to short circuits, generator failures, and various fault conditions.

GasTOPS combined elements of the propulsion and electric plant models with models of other machinery systems in Simulink, and used Simulink Coder™ to generate code for a real-time HIL testing setup. They streamlined this process by creating MATLAB functions that generate Simulink models based on predefined operating parameters for pumps, valves, fans, and other components.

后来，该团队扩展了MCS测试模型，以支持大约100个不同系统和组件故障的模拟，并使用Simul金宝appink编码器为车载培训系统生成C代码。金宝app

MCS现在正在马肯岛号航空母舰上服务。

结果

  • 减少三分之二的时间仿真。霍宁说：“公司在获得任何有用的模拟结果之前，花费六个月或更多的建模船和其他复杂系统并不少见。”“使用MATLAB和SIMULINK金宝app与我们开发的库和脚本一起使用，我们可以在两个月或更短的时间内获得模拟结果，这在设计过程中可能是一个巨大的优势。”

  • 提早确定的关键设计问题。“Our simulations revealed that in the transition from turbine power to electric power, the turbines provided substantially more power than was expected during their cool down,” explains Horning. “Simulink enabled us—and our clients—to understand how the systems would perform before the ship was built.”

  • Models reused multiple times。Horning说：“我们的推进和电气系统模型基于Simulink库元素。”金宝app“我们广泛地重复使用这些模型的元素，以验证控制器设计，为HIL测试生成代码，并创建板载培训环境的核心。”

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