局用通信設(shè)備中開關(guān)電源動(dòng)態(tài)性能的改善方法

1、.局用通信設(shè)備中開關(guān)電源動(dòng)態(tài)性能的改善方法摘 要：針對(duì)局端通信設(shè)備中開關(guān)電源的負(fù)荷變化范圍大，在加載、卸載時(shí)給開關(guān)電源裝置造成強(qiáng)擾動(dòng)，進(jìn)而影響電源的穩(wěn)壓性能等問題，對(duì)開關(guān)電源的固有特性建立了數(shù)學(xué)模型。在對(duì)產(chǎn)生上述問題的原因進(jìn)行深入分析的基礎(chǔ)上，提出了改善開關(guān)電源性能的可行方法。關(guān)鍵詞：開關(guān)電源；穩(wěn)定性：抗干擾；通信設(shè)備 0 引言    開關(guān)穩(wěn)壓電源的優(yōu)點(diǎn)及其擁有的廣泛用途是眾所周知的，具性能直接影響著用電儀器、裝置及系統(tǒng)的運(yùn)行性能及安全性。大功率開關(guān)電源的應(yīng)用特點(diǎn)是其輸出端并接的負(fù)載數(shù)量多。對(duì)開關(guān)電源而言，各負(fù)載的投運(yùn)、撤運(yùn)具有一定的“隨機(jī)性”，即負(fù)載擾動(dòng)范圍大，而這種擾動(dòng)

2、直接引起系統(tǒng)參數(shù)的攝動(dòng)使輸出電壓值動(dòng)態(tài)變化大、恢復(fù)時(shí)間長，不僅影響穩(wěn)壓性能，嚴(yán)重時(shí)將危及通信設(shè)備的正常運(yùn)行，尤其在輕載時(shí)將產(chǎn)生穩(wěn)定性問題。目前，針對(duì)上述問題的開關(guān)電源設(shè)計(jì)中含有較強(qiáng)的實(shí)驗(yàn)整定性，但對(duì)負(fù)載頻繁擾動(dòng)的影響尚無系統(tǒng)化的解決方案。本文主要針對(duì)上述問題展開研究，期望提出一種易于實(shí)施的工程設(shè)計(jì)方法，以簡(jiǎn)化、縮短開關(guān)電源的設(shè)計(jì)及調(diào)試過程，并使之具有良好的動(dòng)、靜態(tài)性能，以提高局端通信設(shè)備的可靠性。1 局用通信系統(tǒng)中的開關(guān)電源特性分析    有許多局用通信系統(tǒng)采用插卡式結(jié)構(gòu)，通?？刹迦攵喾N功能板卡和開關(guān)電源板卡。例如，某光傳輸設(shè)備中，采用兩塊開關(guān)電源板卡(冗余備份)，供電電壓

3、為DC48V，電源板卡的輸出為DC5V，額定輸出功率150W；另外可插最多13塊不同功能的用戶板(或稱之為負(fù)荷模塊)，各功能板負(fù)荷的功率范圍為210W。該系統(tǒng)的供電框圖如圖1所示。    圖1中的K1Kn，合上與否表示相應(yīng)負(fù)荷模塊的投運(yùn)情況。在實(shí)際運(yùn)行中，當(dāng)負(fù)荷很輕時(shí)(即只插12塊用戶板時(shí))或負(fù)荷模塊投運(yùn)、撤運(yùn)(新的用戶板投運(yùn)或因某種原因需要拔出用戶板)時(shí)，DCDC開關(guān)電源的輸出Uo易產(chǎn)生衰減式振蕩，有些開關(guān)電源在負(fù)荷很輕(    1)各負(fù)荷電阻RL1RLn是電源輸出級(jí)電路元件參數(shù)的有機(jī)組成部分，在R、L、C暫態(tài)電路中，R兼有阻尼作用。因此而知，開關(guān)電源

4、的動(dòng)態(tài)特性與負(fù)荷輕重密切相關(guān)。    2)在開關(guān)電源的動(dòng)態(tài)特性滿足要求時(shí)，由于負(fù)荷變化(Io變化)所產(chǎn)生的開關(guān)電源內(nèi)部的隔離變壓器及輸出級(jí)電路壓降變化而引起的輸出電路Uo變化，則可由無靜差反饋調(diào)節(jié)策略來保證穩(wěn)壓精度。    3)開關(guān)電源輸出電壓中所含的紋波成分是開關(guān)電源的另一個(gè)固有缺點(diǎn)。削弱其份量的主要措施是在一定的功率規(guī)格下，L、C與調(diào)制頻率f的合理選擇，尤其是要選ESR極小的電容器。2 通信系統(tǒng)中開關(guān)電源的抗負(fù)荷擾動(dòng)設(shè)計(jì)21 開關(guān)電源抗負(fù)荷擾動(dòng)的本質(zhì)問題    在研究動(dòng)態(tài)特性時(shí)，先忽略圖2中r的影響(一般有），此時(shí)其對(duì)應(yīng)的數(shù)學(xué)模型

5、框圖如圖3所示。    由式(3)可知    1)開關(guān)電源對(duì)象主導(dǎo)模型為二階振蕩環(huán)節(jié)，對(duì)于特定的常規(guī)開關(guān)電源產(chǎn)品而言，L、C是一定的，則負(fù)荷變化時(shí)(Io化，即RL變化)，必引起&o的大范圍變化。也就是說負(fù)荷擾動(dòng)的本質(zhì)是引起系統(tǒng)對(duì)象參數(shù)的大范圍攝動(dòng)。    2)負(fù)荷越輕，即Io越小、RL越大，&o就越小、系統(tǒng)的穩(wěn)定性越差，在本文的仿真實(shí)例中，當(dāng)負(fù)荷在2100范圍變化時(shí)，則&o0005，O245，其隨負(fù)荷的變化量高達(dá)49倍，這也是一般開關(guān)電源輕載性能差的原因所在。    3)對(duì)于特定的開關(guān)電源產(chǎn)

6、品，其內(nèi)部的調(diào)節(jié)器規(guī)律一般均為固定參數(shù)的P1調(diào)節(jié)律，而開關(guān)電源的負(fù)荷又往往大范圍變化，即系統(tǒng)對(duì)象參數(shù)大范圍變化，而固定參數(shù)的常規(guī)PI調(diào)節(jié)律難以適應(yīng)負(fù)荷大范圍變化場(chǎng)合的動(dòng)態(tài)性能要求。22 強(qiáng)抗擾電源的動(dòng)態(tài)校正方法及實(shí)現(xiàn)    為克服常規(guī)Pl調(diào)節(jié)律存在的上述缺點(diǎn)，可采取如圖4所示的、成本低且易于實(shí)施的“PI+D先行”的調(diào)節(jié)律，以提高穩(wěn)壓系統(tǒng)的魯棒性。圖4中的To為高頻濾波的時(shí)間常數(shù)；Kv、Ti、Td分別為調(diào)節(jié)器的比例系數(shù)、積分吋間常數(shù)和微分時(shí)間常數(shù)；Ks、Ts分別為PWM驅(qū)動(dòng)環(huán)節(jié)的比例系數(shù)與時(shí)間常數(shù)；主電路模型環(huán)節(jié)中的各參數(shù)與圖2對(duì)應(yīng)。    在圖4中，Ts

7、、rC、To均為小時(shí)間常數(shù)，在先不計(jì)To的影響，并適當(dāng)調(diào)整有關(guān)參數(shù)，使TsrC(4)則        由式(6)可知，當(dāng)適量選擇微分時(shí)間常數(shù)Td，可使輕載時(shí)由&o起主導(dǎo)作用，使調(diào)節(jié)器外的“對(duì)象環(huán)節(jié)”仍有足夠的阻尼比，并使?jié)M載時(shí)(RLRLmin)，&o在&中仍占相當(dāng)分量，即使負(fù)荷大范圍變化時(shí)，&的變化范圍仍不大(在本文的仿真實(shí)例中，o=0.531，所以0.536，0.776，其隨2100負(fù)荷率的大范圍變化而引起的變化僅為1.45倍)，以提高系統(tǒng)的魯棒性，解決輕載穩(wěn)定性與滿載快速性問題。建議Td的選擇原則為：在最輕載時(shí)(RLR

8、Lmin)，滿足min05。即        Kn、T1的整定原則為：使“對(duì)象環(huán)節(jié)”在最大滯后相角條件下的系統(tǒng)相角裕量不小于60°。由于濾波時(shí)間常數(shù)To很小，故在參數(shù)估算中可先不計(jì)及，得            式中的f為開關(guān)電源的調(diào)制頻率(Hz)，式(9)中的剪切頻率c的汁算如下，由式(5)及圖4(不計(jì)To)得系統(tǒng)相角裕量的汁算公式為        由式（13）可求得（c/n），并進(jìn)而求得KP。    圖4所示的開關(guān)電源中的調(diào)

9、節(jié)器可用簡(jiǎn)單的運(yùn)放電路來實(shí)現(xiàn)，如圖5所示(圖5中的Uref*與Uf的極性相反)。當(dāng)R1RP1+R2時(shí)，電路元件參數(shù)與調(diào)節(jié)器參數(shù)的對(duì)應(yīng)關(guān)系為    2.3一個(gè)實(shí)例的仿真研究    某開關(guān)電源輸出電壓為+5V，額定功率為150W，實(shí)際負(fù)荷率范圍為5%100%，已知L=47H，C=6800F/10V，r=6m，f=25kHz，    對(duì)圖4所示強(qiáng)魯棒型系統(tǒng)的調(diào)節(jié)器參數(shù)，經(jīng)計(jì)算得T4=0.6ms，Ti=0.9ms,KP=0.8。    對(duì)圖3所示常規(guī)PI調(diào)節(jié)型系統(tǒng)的調(diào)節(jié)器參數(shù)，經(jīng)計(jì)算得Ti=2ms，KP=O.1。 

10、;   圖3及圖4兩種方案分別在負(fù)荷率為10、100和2、100時(shí)的仿真結(jié)果(已考慮實(shí)際的限幅特性)分別如圖6及圖7所示。圖6及圖7兩種方案的仿真結(jié)果表明，常規(guī)PI調(diào)節(jié)方案的開關(guān)電源動(dòng)態(tài)過渡過程時(shí)間長，輕載穩(wěn)定性差，在本例中，當(dāng)負(fù)荷為10時(shí)，常規(guī)PI調(diào)節(jié)方案的廾關(guān)電源已處于臨界穩(wěn)定狀態(tài)，這也是目前普通開關(guān)電源產(chǎn)品一般要求負(fù)載率為10以上的原因所在(或已在電源內(nèi)部加了小負(fù)載，即并接了電阻)；強(qiáng)魯棒方案的開關(guān)電源過渡過程時(shí)間短，比常規(guī)方案的動(dòng)態(tài)時(shí)間縮短了近一個(gè)數(shù)量級(jí)，且當(dāng)負(fù)荷小至2以下時(shí)，仍有良好的動(dòng)態(tài)特性，同時(shí)也間接提高了開關(guān)電源的效率。3 結(jié)語    為克服通信設(shè)

11、備巾開關(guān)電源的負(fù)荷大范圍擾動(dòng)引起的電源性能惡化與輕載穩(wěn)定性的問題，本文提出的方法具有實(shí)現(xiàn)簡(jiǎn)單、成本低、效果明顯、可靠性高的特點(diǎn)，局用通信系統(tǒng)采用該方法設(shè)計(jì)的廾關(guān)電源后，消除了電源引起的誤碼與故障。而且，該方法也可容易地推廣應(yīng)用到通用型的各種直流開關(guān)電源的產(chǎn)品設(shè)計(jì)中。內(nèi)部資料，請(qǐng)勿外傳！9JWKffwvG#tYM*Jg&6a*CZ7H$dq8KqqfHVZFedswSyXTy#&QA9wkxFyeQ!djs#XuyUP2kNXpRWXmA&UE9aQGn8xp$R#&#849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&

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22、sv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5u

23、xY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE

24、9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z

25、89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz84!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz

26、849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWw

27、cvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4N

28、GpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNuGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazad

29、Nu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&am

30、p;MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqvadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&am

31、p;MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849

32、GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVku

33、m&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY

34、7JnD6YWRrWwcvR9CpbK!zn%Mz84!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qY

35、pEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEw

36、Z#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%MadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$

37、UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*adNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!

38、z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wE

39、wZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9C

40、pbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz84!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$v

41、STT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&a

42、mp;MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89Am

43、YWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNuGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#

44、QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ks

45、v*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5ux

46、Y7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5u

47、xY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Am

48、YWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%MzadNu#KN&MuWFA5ux

49、Y7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcadNu#KN&a

50、mp;MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#

51、QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$

52、UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT

53、#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz84!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&q

54、YpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&

55、amp;MuWFA5uxY7JnD6YWRrWwcvR9&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89A

56、mYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNuGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpaz

57、adNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9Cpb

58、K!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqvUE%&qYpEh5pDx2zVkum&gTXRm6X4NGp

59、P$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTX

60、Rm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWp

61、azadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz84!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&

62、;ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9&gTXRm6X4

63、NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR

64、9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNuGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#Qc