【作者】 周传海；

【导师】 王广怀；

【作者基本信息】 哈尔滨工业大学 ， 机械电子工程， 2009， 硕士

【摘要】 直驱式容积控制(DDVC)电液伺服系统是近些年研究发展起来的一种新型电液伺服系统,具有交流伺服电动机控制的灵活性和液压大出力的双重优点。可靠性高、节能高效、操作与控制简单、小型集成化等优势使其已在多个领域的装置上获得应用并取得较大的经济效益,被认为是液压控制系统的重要发展方向之一。国外尤其是美国和日本等国对直驱式系统的研究已趋于成熟,应用越来越广泛。本文的主要任务是针对船用舵机的要求进行直驱式电液伺服系统的研究,阐述了系统的原理、组成和特点,分析了现有系统存在的不足,研制了新型的直驱式装置,并对其进行了理论分析和试验研究。本文针对系统工作过程中的吸排油问题进行了研究,设计制作了相应的吸排阀和密闭油罐。经试验研究,可以满足系统工作的需要,减小了吸排阀死区,使低速小位移运动性能得到提高。将吸排阀与锁阀组合成集成阀块,并将阀块与泵放入密闭油罐,设计出了更加集成化的直驱式油源。建立了交流伺服电机的数学模型,分析了泵控缸液压动力机构的原理并建立了数学模型,进而建立了直驱式电液伺服系统的数学模型。讨论了各项参数对系统性能的影响,并在此基础上进行了系统计算机仿真研究。此外,完成PID控制器、模糊PID控制器的设计,编写了相应的控制程序。本文对直驱式电液伺服装置在闭环下进行了试验研究,测试了系统的静态和动态性能指标。试验结果表明,本系统所采取的控制方案合理可行,研制的直驱式电液伺服系统性能满足实际要求。更多还原

【Abstract】 Direct Drive Volume Control (DDVC) Electro-Hydraulic Servo System is a newkind of volume speeding electro-hydraulic servo system. It has both advantages of ACservo motor control’s flexibility and of hydraulic great force. Due to the features ofhigh reliability; high energy-saving efficiency; simple operation and control; smallintegration, etc., the system has been widely applied to the equipments in many fieldsand has gained a lot of economic benefits. So it is widely considered to be one of themost important developing directions of the hydraulic control system.This technologyis going to maturate in foreign country especially in USA and Japan, and itsapplicationisverywide.The main work of this paper is to design the one channel Hydraulic servo driversystem of steering gear for ship.This paperexplains the Direct Drive Electro-hydraulicServo System including its principle, the construction and the advantages. It mainlyanalyzes the inadequacy of the original system,developes a new type of the DirectDriveSystemandanalyzesitintheoryandthroughexperiments.This paper researches the problems about oil suction and drainage of the systemwhen it works and designs the suction and drainage valve and closure oil tank to solvethese problems. The experiments show that the new design works very well, it cansatisfys our needs, reduces the dead zone of valve for oil supply and improves theperformance of low-speed movement and small displacement. It composes the suctionand drainage valve lock valve to hydraulic manifold block and gets pump andmanifoldblockinto closureoiltank,whichmakestheoilsources moreintegrated.Thispaper introduces the working principle and control methods of permanent AC servomotor, analyzes the pump-control cylinder subsystem, establishes the mathematicalmodel of AC servo motor and pump-control cylinder subsystem. In addition,establishes the mathematical model of the whole system. It also analyzes theparameters which influence the system’s dynamic performance. Then, the computersimulation is performed to the system. Besides that, this paper designs PID controllerand fuzzyPIDcontroller andcompiles thecontrolprograms forthem.In this paper, weverified the system’s performance under closed loopand tested thesystem’s quieting and dynamic characteristics. The experiments results have showedthat the control method is reasonable, and the research on the Direct Drive Electro-hydraulicServoSystemisprovedtobesuccessfulforapplication.更多还原