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1、Words and Expressionsstability n. 稳定性time response 时间响应continuous-time system 连续系统discrete-time system 离散系统disturbance n. 干扰stable system 稳定系统at rest 处于平衡状态in equilibrium 处于平衡状态transient phase 瞬态steady-state response 稳态响应excitation n .激励exponential adj. n.指数的oscillation n.振荡amplitude n. 振幅impulse re
2、sponse 脉冲响应Laplace domains 复频域frequency domains 频率域time domain 时间域frequency response 频率响应transport lag 传输延迟conjugate pairs 共轭对differential equations 微分方程distinct roots 互异根transient mode 瞬态模态the s plane s 平面Hurwitz criterion 赫尔维茨判据if and only if 当且仅当First-order System 一阶系统forced solution 强迫解transient
3、 solution 瞬态解time constant 时间常数initial value 初值Quadratic lag 二次延迟Second-order system 二阶系统damping ratio 阻尼比overdamped adj. 过阻尼critically damped 临界阻尼underdampted adj. 欠阻尼unit step input 单位阶跃输入origin n. 原点dominating pole 主极点performance criteria 性能指标settling time 调节时间overshoot n. 超调peak time 峰值时间rise ti
4、me root locus 根轨迹unfactored a. 不可分解的high order 高阶gain n 增益degree of stability 稳定程（裕）度complex variable 复变量complex function 复变函数complex conjugates 共轭复数zero n 零点pole n 极点Angle Criteria 相角条件Magnitude Criteria 幅值条件parameter of interest 增益参数argument n 幅角the counterclockwise direction 逆时针方向polar form 极坐标形式
5、eigenvalue n. 特征值asymptote n. 渐近线Bode plot 伯特图Nyquist diagram 奈魁斯特图polar plot 极坐标图common logarithm 常对数decibel n.分贝minimum phase 最小相位semilog paper 半对数坐标（纸）mirror images 镜像break frequency 转折频率corner frequency 角频率Simple lag 一阶滞后quadratic lag 二阶滞后deviation n. 偏差phase margin 相角裕量gain margin 幅值裕量crossover
6、 frequency 穿越频率performance specifications 性能指标relative stability 相对稳定性Steady-state accuracy 稳态精度specified accuracy 给定精度bandwidth n. 带宽merit n. 优点，指标，准则cascade v. n. 串联slope n. 斜率lead compensation 超前补偿lag compensation 滞后补偿frequency transfer function 频率传函（频率特性）Notes1 This is also true for the leads corresponding to the simple and quadratic lag below.对应于后面的一次和二次滞后的超前环节也是这样。2 To ensure a specified attenuation (reduction) of noise components in the input above a certainfrequency should be below a certain level.为保证对输入中高于一定频率的噪声成分指定的衰减，（波特图中 M）应低于某一水平。
