跟踪

On the basis of methods of feedback linearization and compound Lyapunov, the author puts forward a sort of robust output track control rule with a regulable parameter. This rule not only guarantees the system exponent output track but also makes the closed loop system have limited states.

基于反馈线性化方法和复合Lyapunov方法，作者提出了一种具有可调参数的鲁棒输出跟踪控制律，不仅可以保证系统指数输出跟踪，而且闭环系统状态有界。

As a numerical example of the automatic clutch with double-stage vibroisolation effects,computer simulations are made for the nonlinear dynamic system with incorporation of pole-assignment controller to follow ideal regular velocity outputs.

仿真以两级减振自控离合器跟踪理想响应为例，结果表明，对非线性系统实施反馈线性化控制，跟踪精度高，鲁棒性好。

Notify the Land and Resources Bureau at all levels to strengthen its operation on the Internet map systems of regular supervision and follow-up inspection, the establishment of tracking monitoring system to enhance the training of employees on the Internet map service and promptly prosecute all kinds of illegal behavior.

通知要求各级国土资源局强化对互联网地图及其运行系统的日常监管和跟踪检查，建立跟踪监管系统，加强对互联网地图服务从业人员培训，及时依法查处各种违法违规行为。

Notification requirements of Land and Resources Bureau at all levels should strengthen the management, strengthen its operation on the Internet map systems of regular supervision and follow-up inspection, the establishment of tracking monitoring system to enhance the training of employees on the Internet map service and promptly prosecute all kinds of illegal irregularities.

通知要求，各级国土资源局要加强管理，强化对互联网地图及其运行系统的日常监管和跟踪检查，建立跟踪监管系统，加强对互联网地图服务从业人员培训，及时依法查处各种违法违规行为。

For plants with relative degree greater than one, the tracking performance of the MRRC may be unacceptable.

该设计方案的主要缺点是跟踪精度过分依赖控制增益：较高的跟踪精度需要很大的控制增益。

A new switching scheme to the gain of variable structure control signals is proposed. The following important open problems in standard VS-MRAC and MRAC are solved by using the scheme: 1 . a prespecified transient and steady-state performance index for tracking error can be achieved without requiring any information about the plant high frequency gain sign when relative degree of modelled part of plant is one, and 2 . it is shown that as long as the performance indexes are guaranteed for the auxiliary errors, each of which in dynamics is a sub-system with relative degree one, the tracing error will converge to a small residual set in a prespecified transient time when relative degree of modelled part of plant is greater than one.

提出了一种控制增益可切换的变结构自适应律，解决了如下变结构模型参考自适应控制（包括基于调参律的模型参考自适应控制）理论研究中长期没有解决的问题：当对象建模部分相对阶为1、高频增益符号未知且存在非线性输入扰动和未建模动态等情况下，系统跟踪误差可满足预先给定的动态和稳态性能指标；当对象建模部分相对阶大于1且存在非线性输入扰动和未建模动态时，可保证系统跟踪误差在预先给定的过渡过程时间内收敛到一个残差集中； 5。

A large number of commercial data were simulated, and the high performance of the soft-sensor is demonstrated by the fact that the maximum relative error, relative root mean square error and tracking precision are 2.68%, 0.17% and 0.9569, respectively.

针对大量工业数据，进行仿真计算，得到模型的最大相对误差、相对均方误差和跟踪性能指标分别为2.68%、0.17%和0.9569，说明该软测量模型具有良好的预测能力和跟踪性能。

Basic function of this system is to track flying targets accurately by means of the searcher and acquisition system.

实现对空中飞行目标的保精度跟踪是该系统的主要功能，而搜索和截获则是达到自动跟踪的手段。

The relationships between the frequency characteristics of type Ⅱ servosystem and dynamic performances are studied. An approch to dynamic design of RDC is proposed and experimental results have demonstrated that this dynamic design method is effective.

从动态分析的角度出发，文中导出了跟踪型轴角数字转换器的动态数学模型，探讨了典型Ⅱ型伺服系统频率特性与跟踪性能指标的关系，进而给出了转换器的动态参数设计方法。

However, there is a singular grey space for representing the infrared object in the infrared object tracking scenario.

但在红外目标跟踪中，由于单一灰度特征空间缺乏描述红外目标的信息，使得基于均值移位算法的红外目标跟踪不稳健。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。