After flood - control function of shangyou reservoir being analysed . its flood - control effectiveness of optimization plan was studied 摘要通過(guò)對(duì)上猶江水庫(kù)歷史較大洪水防洪作用的分析,研究了水庫(kù)調(diào)洪優(yōu)化方案新增的防洪效果。
The running of the system showed that the control system has good control effectiveness , and satisfies the control requirements of the high - speed mouth sticking 應(yīng)用結(jié)果表明,本控制系統(tǒng)具有控制精度高、運(yùn)行穩(wěn)定可靠、投資成本低等特點(diǎn),能夠滿足高速糊口機(jī)生產(chǎn)線的控制要求。
In this thesis , the behavior of sma incorporated friction dampers is studied through experiments . and the vibration control theory and control effectiveness of the dampers in long - span canopy roof structures are studied 本文在sma復(fù)合摩擦阻尼器理論模型的基礎(chǔ)上,對(duì)sma復(fù)合摩擦阻尼器進(jìn)行了試驗(yàn)研究和參數(shù)影響分析,并研究探討了其在大跨度挑篷結(jié)構(gòu)中的減振控制理論與控制效果。
And simulation analyses were carried out to examine the influence of the parameters of the controlled structures and the controllers on the control effectiveness of the system . the simulation results show that the different control laws ca n bring on the different control effectiveness 在隔震體系中,第一振型控制律和主振型控制律所產(chǎn)生的減振效果是相同的,因?yàn)楦粽痼w系的第一振型就是主振型。
Finally , vibration control theory and methods are studied by applying sma dampers to roofs of stadiums , and the control effectiveness are analyzed . it is shown that the new type of sma damper developed in this thesis is very effective to mitigate earthquake responses of structures 最后,將本文設(shè)計(jì)的sma阻尼器應(yīng)用于體育場(chǎng)挑蓬結(jié)構(gòu),探討了其在大跨空間結(jié)構(gòu)中的減振控制理論與方法,對(duì)其控制效果進(jìn)行了分析。
On the basis of analyzing factors affecting the control effectiveness of lean production in green supply chain and its objective , the thesis puts forward key control areas of lean production in green supply chain and controlling index systems 在對(duì)影響綠色供應(yīng)鏈環(huán)境下精益生產(chǎn)實(shí)施控制效果的因素進(jìn)行分析以及綠色供應(yīng)鏈環(huán)境下精益生產(chǎn)的目標(biāo)進(jìn)行分解的基礎(chǔ)上,提出了綠色供應(yīng)鏈環(huán)境下精益生產(chǎn)的關(guān)鍵控制領(lǐng)域和實(shí)施控制的指標(biāo)體系。
The results reveal that hedms can utilize the interaction of different structures to make the linked dampers do their best and gain significant control effectiveness , while the parameters of hedms are properly designed . the shaking table tests are performed on two steel frame model structure linked with hedms 結(jié)果表明,通過(guò)選擇適當(dāng)?shù)目刂蒲b置工作參數(shù), hedms裝置能充分利用體系中各子結(jié)構(gòu)之間的相互作用,高效地發(fā)揮履歷型阻尼器的耗能能力,取得顯著的減震控制效果;兩子結(jié)構(gòu)頻率對(duì)控制效果有較大的影響。
Based on the transient response , the control effectiveness of the visco - elastic dampers is further demonstrated . according to the lqr optimal control theory , clipped - optimal control arithmetic , and the modified bouc - wen model of the mr dampers , the lqr - clipped semi - active control is proposed . the passive , active , and semi - active control of the cables are analyzed by using the difference discretization model of the cable - dampers system 結(jié)合lqr最優(yōu)控制理論、面向速度剪切( clipped - optimal )控制算法及修正的磁流變( nr )阻尼器bouc - wen模型,創(chuàng)新地提出了lqr - clipped半主動(dòng)控制算法,應(yīng)用拉索振動(dòng)的差分離散模型,對(duì)斜拉索的面內(nèi)振動(dòng)進(jìn)行了被動(dòng)、主動(dòng)及半主動(dòng)控制研究,分析了mr阻尼器對(duì)斜拉索的振動(dòng)控制效果。
By numerical simulation , we studied the seismic responses of bi & avsd system under the several kinds of earthquake waves and sine waves with different frequency characteristics and different pga numerical simulation demonstrated that the control effectiveness of relative displacement responses and the story displacement relative to base - isolation story are in correlation with the frequency - ratio of the earthquake waves 同時(shí)數(shù)值模擬的結(jié)果還顯示不同控制律有不同的減振效果。針對(duì)層間相對(duì)位移的控制,符號(hào)控制律有較好的效果;針對(duì)各層相對(duì)于隔震層的位移的控制,振型控制律有較好的效果。