第五章结构主动减震控制Chapter 5 Active structural vibration control5. 1结构主动减震控制概述Introduction to active structural vibration control5. 2结构主动减震机理和系统组成The mechanismof active control of structureandsystemcomponents5. 3主动控制算法active control algorithm
第五章 结构主动减震控制 Chapter 5 Active structural vibration control 5.1 结构主动减震控制概述 Introduction to active structural vibration control 5.2 结构主动减震机理和系统组成 The mechanism of active control of structure and system components 5.3 主动控制算法 active control algorithm
5. 1结构主动减震控制概述Introduction to active structural vibration control5.1.1结构主动减震控制的基本概念和分类Concepts and classification of active vibration controlO概念concepts结构主动控制是利用外部能源(计算机控制系统或智能材料),在结构物受激励振动过程中,瞬时施加控制力或瞬时改变结构的动力特性,以迅速衰减和控制结构动力响应的一种减震(振)技术。Active structural vibration control is a control technology byapplying instantaneous control force or instantly alteringthe dynamic properties of structures throughsomeexternal energy supply to rapidly modify or control themotion of a structure
5.1 结构主动减震控制概述 Introduction to active structural vibration control 5.1.1 结构主动减震控制的基本概念和分类 Concepts and classification of active vibration control 概念 concepts 结构主动控制是利用外部能源(计算机控制系统或智能材 料),在结构物受激励振动过程中,瞬时施加控制力或瞬 时改变结构的动力特性,以迅速衰减和控制结构动力响应 的一种减震(振)技术。 Active structural vibration control is a control technology by applying instantaneous control force or instantly altering the dynamic properties of structures through some external energy supply to rapidly modify or control the motion of a structure
分类:Classifications(1)按主动控制的利用程度分类:Classificationbyutilization ofactive control①结构(全)主动控制(ActiveControl);②结构半主动控制(SemiActiveContro):③结构混合控制(HybridControl)。(2)按实现控制的手段分类:Classificationbyimplementationmeans①施加外力控制型;byapplyingexternalcontrolforce②改变结构参数型;byalteringthestructuralparameters③智能材料自控型。Byusing intelligent self-controlmaterials
分类: Classifications (1)按主动控制的利用程度分类:Classification by utilization of active control ① 结构(全)主动控制(Active Control); ② 结构半主动控制(Semi Active Control); ③ 结构混合控制(Hybrid Control)。 (2)按实现控制的手段分类: Classification by implementation means ① 施加外力控制型;by applying external control force ② 改变结构参数型;by altering the structural parameters ③ 智能材料自控型。By using intelligent self-control materials
主动质量阻尼器AMD主动质量驱动器AMD主动拉索系统ATS施加外力控制型主动挡风板ADA脉冲发生器PG混合质量阻尼器HMD主动被动调谐器质量阻尼器APTMD主动变刚度AVS按控制手段改变结构参数主动变阻尼AVD主动支撑系统ARS形状记忆合金SMA压电层材料PEL智能材料自控型ER流态ERPMR流态MRF
5.1.2优缺点和应用范围Advantages,disadvantagesandapplication优点如下:Advantages(1)减震控制效果好:enhancedeffectivenessinmotioncontrol.The degree of effectiveness is, by and large, only limited by thecapacity of the control system;(2)适应性广;applicability to multi-hazard mitigation situations(3)经济性好;Moreeconomical,Savetheengineeringcost(4)对外部环境和地面运动不敏感relativeinsensitivitytositeconditions and ground motion.仍存在的问题:Existing.problems(1)减震的有效性;theeffectofvibrationcontrolistemporary(2)控制系统工作的稳定性;theinstabilityofcontrolsystem(3)时滞问题;timedelay
5.1.2 优缺点和应用范围 Advantages, disadvantages and application 优点如下:Advantages (1)减震控制效果好;enhanced effectiveness in motion control. The degree of effectiveness is, by and large, only limited by the capacity of the control system; . (2)适应性广;applicability to multi-hazard mitigation situations (3)经济性好; More economical, Save the engineering cost (4)对外部环境和地面运动不敏感 relative insensitivity to site conditions and ground motion. 仍存在的问题: Existing problems (1)减震的有效性;the effect of vibration control is temporary (2)控制系统工作的稳定性;the instability of control system (3)时滞问题;time delay