該功能在測(cè)試共線操作變量(MVs)時(shí)有用。
智能向?qū)?yīng)用提供了允許一個(gè)MV（主要）與另一個(gè)MV（次要）配對(duì)的功能腾它，這樣當(dāng)主MV階躍動(dòng)作時(shí)乒裆，副MV亦同時(shí)做階躍動(dòng)作璃俗。你可以通過(guò)STPAIRREQ參數(shù)打開(kāi)或關(guān)閉此功能奴璃。
參數(shù)STPAIRRATIO定義了副MV與主MV的階躍大小之比。若比值為正城豁，則兩個(gè)MV將往相同方向做階躍苟穆。與此相反，若比值為負(fù)钮蛛，則兩個(gè)MV將往相反方向做階躍鞭缭。
配對(duì)變量必須配置在相同的測(cè)試組里。否則魏颓，智能向?qū)б鎸?huì)忽略MV配對(duì)要求。
當(dāng)啟用一對(duì)配對(duì)MV時(shí)吱晒，主MV和副MV將同時(shí)做階躍動(dòng)作甸饱。在測(cè)試組中主副MV的這一同時(shí)動(dòng)作將被當(dāng)成單個(gè)階躍。測(cè)試組在完成配對(duì)MV動(dòng)作后在序列上進(jìn)入下一MV仑濒。
只要配對(duì)MV在同一個(gè)測(cè)試組叹话，沒(méi)有限制哪個(gè)MV是主要的哪個(gè)MV是次要的。例如墩瞳，你可以指定MV2作為MV1（主要）的配對(duì)變量驼壶，而在同一時(shí)間指定MV1作為MV2（主要）的配對(duì)變量。
如果你在各自的STPAIRRATIO中依舊使用不同的標(biāo)記喉酌，智能向?qū)б鎸⒆詣?dòng)生兩個(gè)不同的配對(duì)動(dòng)作：一個(gè)同向热凹，一個(gè)反向。
附原文：
This feature may be useful for testing colinear manipulated variables (MVs).
A SmartStep application provides the functionality of allowing one MV (primary) to be paired up with another MV (secondary), such that when the primary MV steps, the secondary MV is simultaneously stepped also. You can turn this feature on or off via parameter STPAIRREQ.
The parameter STPAIRRATIO defines the ratio of the secondary MV step size over the primary MV. A positive ratio means both will step in the same direction. In contrast, a negative ratio will step the paired MVs in the opposite direction.
Paired variables must be configured in the same testing group. Otherwise, the SmartStep engine will ignore the MV pair request.
When a paired MV is enabled, both the primary and secondary MVs are stepped simultaneously.This simultaneous move of the primary MV step and secondary MV step is treated as a single step in the testing group. The testing group proceeds to the next MV in sequence on completion of the paired MV moves.
There is no restriction on which MV can be the primary and which should be secondary, as long as they are in the same testing group. For example, you can specify MV2 as a paired variable in MV1 (primary), while at the same time specifying MV1 as the paired variable in MV2 (primary).
If you also use different signs in the respective STPAIRRATIO, then the SmartStep engine will automatically generate two different paired moves: one in the same direction and the other in the opposite direction.
2015.10.17
