Development of Advanced Control Methodologies for Harmonic Distortion Reduction in Nonlinear Acoustic Source

非线性声源谐波失真减少的先进控制方法的开发

• 批准号: 508629-2017
• 负责人: Pan, YaJun
• 金额: $ 1.82万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639297
• 关键词: Development; Advanced; Control; Methodologies; Harmonic

GeoSpectrum Technologies Inc. is an engineering company specialized in underwater acoustic transducers andsystems, and meets the needs of various clients as the designers and manufactures of hydrophones and soundprojectors as well as consultants on the integration and testing of acoustic systems, primary to the oil and gas,defence and surveillance and environmental sectors. GeoSepctrum's products and services are wide ranging,including underwater acoustic systems, from transducer design to controls, software, winch and handlingsystems.GeoSpectrum is developing a new, coherent, low frequency sound projector for seismic surveys (CoherentSeismic Source or CSS), and faces challenges in controlling the high amplitude signal generation and limitingharmonic distortion. Without better control of the sound source, the product will be inefficient and providelower resolution imaging, while also having a more significant environmental impact. In order to deal withthese challenges and improve its market position, the company needs to develop new control methods that areoutside of their current capabilities.Currently, the company is keen on working with Dr. Pan on the project that involves conducting research onthe modelling, developing advanced control approaches for the acoustic system to generate a desired lowfrequency and high amplitude desired acoustic signal for underwater surveys. Potential methodologies toeffectively reducing the harmonic distortion include iterative learning control, robust nonlinear control, andadaptive control with model identifications. Simulation studies as well as real time implementation will beinvestigated as well. The potential commercialization of the new device will place GeoSpectrum and AtlanticCanada as a leader on developing acoustic systems in conjunction with Dalhousie University.

GeoSpectrum Technologies Inc.是一家专门从事水下声学换能器和系统的工程公司，满足各种客户的需求，如水听器和声音投射器的设计和制造，以及声学系统集成和测试的顾问，主要用于石油和天然气，国防和监视以及环境部门。GeoSpectrum的产品和服务范围广泛，包括水声系统，从换能器设计到控制，软件，绞车和处理系统。GeoSpectrum正在开发一种新的，相干的，低频的声音投影仪用于地震勘探（相干地震源或CSS），并面临控制高振幅信号产生和限制谐波失真的挑战。如果不对声源进行更好的控制，该产品将效率低下，并提供更低分辨率的成像，同时还具有更显著的环境影响。为了应对这些挑战并提高其市场地位，该公司需要开发新的控制方法，这超出了他们目前的能力。目前，该公司热衷于与潘博士合作的项目，包括进行建模研究，为声学系统开发先进的控制方法，以产生所需的低频和高振幅的水下测量所需的声学信号。有效降低谐波失真的潜在方法包括迭代学习控制、鲁棒非线性控制和带模型辨识的自适应控制。模拟研究以及真实的时间实施将被调查以及。新设备的潜在商业化将使GeoSpectrum和加拿大南极洲公司成为与达尔豪西大学合作开发声学系统的领导者。