Steady-State Errors

The choice of traditional step parameter μ and its effect on steady-state errors are analyzed .

分析了传统定步长因子μ的选取和其对算法达到稳态时误差的影响；

The results show that the steady-state errors of Fuzzy PID-Type Controller of Adjusting System Control Quantity fluctuate is less , so it is obviously better than fuzzy control .

结果显示，调整系统控制量的模糊PID控制稳态误差小，控制效果明显优于模糊控制算法。

Fuzzy control has a good robustness , not knowing mathematical model of control object and response fast , but fuzzy control can lead to steady-state errors by limited regulation of fuzzy .

模糊控制鲁棒性好，无需知道被控对象的数学模型，且在快速性方面有着自己的优势，但模糊控制易受模糊规则有限等级的限制而引起稳态误差。

The result of computer simulation shows that ILIOC is superior to LIOC in eliminating generator extremity voltage steady-state errors and increasing the control precision .

仿真结果表明：在消除发电机端电压的稳态误差和提高控制精度方面ILIOC优于LIOC。

The algorithm adopts the modified dual mode multi-modulus algorithm mentioned above , and updates the forward and feedback filter coefficients independently , acquiring reduced steady-state errors .

它采用本文给出的改进的双模式多模算法独立更新前向、反馈滤波器系数，能够获得较低的稳态误差。

The results of simulation show that by using jump function as disturbance , the phenomenon of that the steady-state errors are existed when using LOEC could be simulated in computer sedation .

仿真结果表明：采用阶跃干扰能模拟出线性最优励磁调节器存在的稳态误差的现象。

A simulation indicates that the requirement for force tracking accuracy can be met by adopting forward-tuning strategies , reducing extraneous force and controlling steady-state errors . The research provides data parameters and control strategy bases for constructing real-time systems .

仿真结果表明，采用前馈校正策略，减少多余力，控制稳态误差可以实现力跟踪精度性能的要求，为构建实时系统提供了数据参数和控制策略的依据。

When the load current , the quantity of response gas or ambient temperature changes , it is a key indicator to measure the performance of the entire control system that output voltage of PEMFC can respond rapidly without any steady-state errors .

在负载电流、反应气体量或者环境温度改变的情形下，用来衡量整个控制系统特性的主要指标是PEMFC的外电路电压的快速响应与稳态无误差。

With the experiments on parallel robot prototype , we have acknowledged that the adaptive fuzzy PID control strategy can fully play the advantages of PID controller and fuzzy controller . The results show fast response , small overshoot and small steady-state errors .

实验结果表明模糊自适应PID算法能够充分发挥PID控制器和模糊控制器的优点，在并联机器人速度的跟踪上，不仅响应快，而且超调量小，稳态误差小。

For the sinusoidal disturbances of known frequency , but unknown amplitude and phase , or other unmeasurable persistent disturbances , based on the internal model principle , the internal dynamic compensator is designed to reject disturbances with zero steady-state errors perfectly . 4 .

对于已知频率、未知振幅和初相的正弦扰动，或其它不可测量的恒值扰动，运用内模原理，通过设计内模动态补偿控制器，使系统达到无静差的、完全的扰动抑制。

As there are steady-state errors when using LOEC , and considering the power system operation condition , the power system linear extended state equations are achieved as using integral control to generator extremity voltage deviation , and the integral linear optimal excitation control ( ILOEC ) is obtained .

从电力系统的运行实际出发，推导了对发电机机端电压偏移量施加积分控制时系统的线性化增广状态方程式，并在此基础上推导了积分型线性最优励磁控制规律（以下简称ILOEC）。

Only using the system output information feedback , we can set arbitrarily the closed-loop characteristic matrix by choosing the proper weighting factors , and so the closed-loop stability can be ensured and the steady-state tracking errors can be eliminated .

适当选取这些权因子，便可按设计要求、仅用系统的输出信息反馈便能任意配置闭环系统的特征矩阵，从而保证闭环稳定性和其他优良性质。