02306自动控制理论(二)2011年10月份历年真题

1、authority, jurisdiction has no criminal record issued by a police station and is willing to help the supervisory comments. Up to now, the total handle pre-trial assessment 155, parole assessment 17, before litigation assessment 2. Carry out unannounced inspections. In mid-May, community corrections

2、law enforcement Brigade in 16 judicial district Council conducted a flight inspection, focus on use, file management, specification of the platform implementation and to inform the analysis summary checks. Successful completion of provincial vocational training organized by the Office for social wor

3、k exam work. New released information management system training. 2014-criminal released personnel return to troubleshoot. First half of the year, the region today received community sentences of 211 people, lifting community corrections 235 people according to law, as of June 30, the scheduled comm

4、unity sentences of 484 people, including suspended for 425 people, 46 people on parole and temporary execution of 11 persons, control of 2. Four, service development, to enhance legal services to boost the level of urban and rural construction. Legal services cover work carried out. According to Ton

5、g Zheng (2013) 136th document requirements, paying careful attention to lawyers one to one legal services, insist on monthly inspection and the promotion of legal services cover work smoothly. Further push four into four special legal service activities. Formed sophisticated industry lawyer service

6、mission, around District Government focus project and economic structure strategic adjustment, organization lawyer for District Government for southern sewage processing factory provides legal views, for District Government smooth processing southern sewage processing factory provides has powerful o

7、f legal guarantees, continues to organization lawyer participation District Government petition reception work, daily arrangements one lawyer participation petition duty work, effective maintenance normal of petition order, guarantees social harmony stable. Developed jointly with the District Prosec

8、utors Office on the establishment of petition on procuratorial disputes resolution views of the lawyers intervention mechanism (for trial implementation), lawyers for the Prosecutors Office is equipped with a service team, for the petition on procuratorial disputes resolved to provide legal help. Ho

9、jun XX spring breeze action. All District Attorney launched a Hojun XX week, the whole District Attorney conducted voluntary legal advisory activities, in Community law to provide legal services for residents of their communities, legal needs survey of businesses, community residents, providing advi

10、ce for the masses 86 passengers, issuing more than 200 copies of publicity materials. Perfect the legal aid institution, especially speeding up the rural legal aid system . Strengthening the construction of village-level legal assistance co-ordinators. Through true strong legal aid liaison officers

11、at village level, where when people need legal aid, inform people applying for legal aid programs and materials required, guiding and helping the masses to the local legal aid station or apply to the legal aid centre. The first half, we cooperate with government involvement in xingren dream Rai text

12、iles limited recourse over more than 300 workers labor compensation case, Zhang Zhi Shan Yun Tong wood hundreds of recovery labor compensation case, riding a bank source city, casting plant, Zhang Zhi Shan Zhen Hao dreams company Enterprise labor compensation case全国2011年10月自学考试自动控制理论（二）试题课程代码:02306一

13、、单项选择题（本大题共15小题，每小题2分，共30分）在每小题列出的四个备选项中只有一个是符合题目要求的，请将其代码填写在题后的括号内。错选、多选或未选均无分。1.描述RLC电路的线性常系数微分方程的阶次是( )A.零阶B.一阶C.二阶D.三阶2.由于运算放大器采用反相放大器方式，其输出端具有输出阻抗特性为( )A.高B.低C.中等D.零3.方框图的转换，所遵循的原则为( )A.结构不变B.等效C.环节个数不变D.每个环节的输入输出变量不变4.阶跃输入函数r(t)的定义是( )A.r(t)=l(t)B.r(t)=x0C.r(t)=x01(t)D.r(t)=x0.(t)5.设单位负反馈控制系统的

14、开环传递函数为G0(s)=，则系统的特征方程为( )A.G0(s)=0B.A(s)=0C.B(s)=0D.A(s)+B(s)=06.改善系统在参考输入作用下的稳态性能的方法是增加( )A.振荡环节B.惯性环节C.积分环节D.微分环节7.当输入信号为阶跃、斜坡函数的组合时，为了满足稳态误差为某值或等于零，系统开环传递函数中的积分环节数N至少应为( )A.N0B.N1C.N2D.N38.设开环系统的传递函数为G(s)=，则其频率特性极坐标图与实轴交点的幅值|G(j)|=( )A.2.0B.1.0C.0.8D.0.169.设某开环系统的传递函数为G(s)=,则其相频特性()=( )A.B.C.D.1

15、0.设某校正环节频率特性Gc（j）=，则其对数幅频特性渐近线高频段斜率为( )A.0dBdecB.-20dBdecC.-40dBdecD.-60dBdec11.二阶振荡环节的对数幅频特性的低频段的渐近线斜率为( )A.0dBdecB.-20dBdecC.-40dBdeCD.-60dBdec12.根轨迹法是一种( )A.解析分析法B.时域分析法C.频域分析法D.时频分析法13.根轨迹法出射角公式为( )A.B.C.D.14.PID控制器是一种( )A.超前校正装置B.滞后校正装置C.滞后超前校正装置D.超前滞后校正装置15.某二阶系统状态方程的可控标准形为( )A.B.C.D.二、填空题（本大题

16、共10小题，每小题1分，共10分）请在每小题的空格中填上正确答案。填错、不填均无分。16.发电机开环励磁控制系统包括_和受控对象（发电机）两部分。17.传递函数分母多项式的根，称为传递函数或系统的_。18.控制系统时域分析法最大的特点是_。19.在单位阶跃输入信号作用下，0型系统的稳态误差ess=_。20.当频率从0变化到时，频率特性G（j）作为一个矢量，其端点在复平面的轨迹曲线就是频率特性的_图。21.当时，最小相位系统的相角为_。22.奈奎斯特稳定判据是利用开环系统的幅、相频率特性来判别_稳定性的一个判别准则。23.开环传递函数G(s)H(s)=的根轨迹弯曲部分的轨迹是_。24.频域分析中

17、，反映系统相对稳定性的指标有相位裕量和_。25.当系统用n阶状态方程=Ax+Bu表示时，_是系统的特征方程式。三、名词解释题（本大题共4小题，每小题3分，共12分）26.控制系统的被控量27.控制系统的上升时间tr28.控制系统的相对稳定29.根轨迹的幅角条件四、简答题（本大题共4小题，每小题5分，共20分）30.试举出发电厂中三个恒值控制系统的例子。31.线性定常系统中有哪些典型环节？32.设校正环节传递函数Gc(s)=，则其频率特性Gc（j）的极坐标图终点坐标值为多少？33.与经典控制理论相比，为什么现代控制理论中，存在可控性、可观测性问题？五、计算题（本大题共3小题，第34、35小题每小

18、题10分，第36小题8分，共28分）34.设有如题34图所示的反馈控制系统，试用赫尔维茨判据确定闭环系统稳定时Kp的取值范围.35.设控制系统的结构图如题35图所示，欲使最大超调量p=20%，峰值时间tp=0.8秒，试确定K1和K2的值，并在K1，K2值下，求上升时间tr及调整时间ts.36.设某单位负反馈系统的开环传递函数G0(s)=要使KV=10,25试设计一个最简单形式的校正装置。2011年10月全国自考自动控制理论（二）参考答案of recourse. Effective safeguarding workers legitimate rights. Increase legal ai

19、d efforts. Visit for assistance cases, discover problems in the adjustment. Legal aid advocacy, from three aspects of broad, vivid and persistent, using a variety of channels, in various forms, highlighting key, step up publicity, build public understanding of legal assistance, support, legal assist

20、ance, legal aid society. In January-June, the Notary Office for various types of notarization of 1577. First half of judicial legal assistance centre had 530 for all kinds of legal aid cases, of which 489, 41 criminal cases civil cases, answer legal consultants received over more than 9,800, free le

21、gal services cost more than 476,000 yuan, for the parties to be compensated more than 8.21 million Yuan. Handling mass cases, 6 involved migrant workers, 418. Consultant unit established by the region-wide grass-roots legal services has amounted to 789, region-wide grass-roots legal workers to handl

22、e cases of 1197, avoid and recover 54.78 million yuan of economic loss. Five, optimization style, to enhance the overall image of the administration of Justice. Intensive business training. Organized social workers, mediators, and other line of business training, enhance the level of work ability. D

23、eepening the effectiveness of brand building. I Council in full system continues to in-depth carried out to legal into million home, service you I he for theme, to four has four will that has asked will answer, and has difficult will help, and has knot will solutions, and has Connaught will practice

24、 for connotation, to carried out service brand created activities, full promote and reached service quality, and management optimization, and performance excellent, and team excellent, and brand winning of five excellent for target of judicial administrative effectiveness service brand created activ

25、ities. Strengthen the construction of style. Has developed 2015 district Bureau of justice programme and clean clean government responsibility, implement signing of responsibility and responsibility of decomposition, ensuring leading cadres to perform one post double responsibility. Accountability a

26、nd three book reports System. Clear authority mainly responsible for the overall leadership responsibility for clean, Bureau Chief of honest responsibility, pay special attention to the independent Commission against corruption responsible decomposition. To decompose the leadership team member responsibility of uncorrupted, and layers of the conclusion of the responsibility, mainly leadership responsibility, in charge of the leadership personally, staff implementation of honest work. In various