KCP2

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其中 1 和 2 的扰动响应曲线类似，因为两者的扰动是沿整个过热器长度方向上同时发生的，响应具有自平衡特性，而且惯性和迟延都比较小。
      对于第 3 种扰动考虑到使控制系统结构简单，易于实现，目前大多采用喷水量作为调节量，因此喷水量扰动就是基本扰动。过热器是具有分布参数的对象，可以把管内的蒸汽和金属管壁看作是无穷多个单容对象串联组成的多容对象，因此过热器出口温度对喷水量扰动的响应有很大的迟延，减温器离过热器出口越远，迟延越大。
2 、通常的汽温控制系统
      通常采用两种方法对汽温系统进行控制即带有导前微分信号的双信号汽温控制系统和汽温串级控制系统，另外还可以增加相位补偿回路或前馈控制回路，提高控制系统的品质。在工程实际应用中我们为克服常规控制策略的不足，根据对象的特性选用了新型控制方法，自抗扰控制方法。
3 、自抗扰控制器介绍
自抗扰控制器的结构 (Auto-Disturbances-Rejection Controller- ADRC)
自抗扰控制器 (ADRC) 基本结构是由如下三种功能组合而成 :
用一个跟踪微分器 (TD) 来安排过渡过程并提取其微分信号；
用扩张状态观测器 (ESO) 来估计对象的状态变量和未知扰动的实时作用量；
安排的过渡过程与对象状态估计量之间误差的适当非线性组合和未知扰动估计量的补偿来生成控制信号。

The disturbance response curves of 1 and 2 are similar because they occur simultaneously along the whole length direction of the superheater, and the response has the characteristics of self balance, and the inertia and delay are relatively small.
For the third disturbance, the control system structure is simple and easy to realize. At present, most of the water spraying amount is used as the regulating quantity, so the water spraying quantity disturbance is the basic disturbance. Superheater is an object with distributed parameters. Steam and metal tube wall in the tube can be regarded as a multi volume object composed of infinite single volume objects in series. Therefore, the response of superheater outlet temperature to water spray disturbance has a great delay. The farther the desuperheater is from the superheater outlet, the greater the delay is.
2. Common steam temperature control system
Generally, two methods are used to control the steam temperature system, i.e. double signal steam temperature control system with leading differential signal and steam temperature cascade control system. In addition, phase compensation loop or feed-forward control loop can be added to improve the quality of the control system. In engineering application, in order to overcome the shortcomings of conventional control strategy, according to the characteristics of the object, a new control method, active disturbance rejection control method, is selected.
3. Introduction of ADRC
Structure of auto disturbances rejection controller (ADRC)
The basic structure of active disturbance rejection controller (ADRC) is composed of the following three functions:
A tracking differentiator (TD) is used to arrange the transition process and extract the differential signal;
Extended state observer (ESO) is used to estimate the real-time action of state variables and unknown disturbances;
The appropriate nonlinear combination of the errors between the scheduled transition process and the plant state estimator and the compensation of the unknown disturbance estimator are used to generate the control signal.

KSD1-08

KSD1-08

1756-N2
1756-N2
1756-N2
1756-N2
1756-N2
1756-OB8
1756-PA75R
1756-PA75R
1756-PA75R
1756-TBCH
1756-TBCH
1756-TBCH
1756-TBCH
1756-TBCH
1756-TBNH
1756-TBNH
1756-TBNH
1756-TBNH
1756-TBNH
1756-TBNH
1756-TBNH

KCP2

KCP2