Correcting moves in a SmartStep application 在智能向导应用中校正动作

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当智能向导引擎检测到一个CV将违反限制时，它将尝试一系列校正动作以避免违反。在TEST(测试), TEST NO_PULSE或SUSPEND(挂起)模式下可对属于测试组的MVs进行动作校正。
STCMFLAG参数是用于指定在切换到CORRECTING或REPOSITION模式前智能向导引擎尝试的连续校正动作数目。校正动作与用户需求目标变更相同的方式实施。
校正动作属性包括以下内容：
•校正动作规划不会违反最小或最大移动准则（STMVMAXU，STMVMAXD，STMVMINU，STMVMIND）。
•没有中高频脉冲被叠加到校正动作计划中。
•正在进行的MV校正动作将表现为阶跃，直到达到新目标，此后其会返回到动作前的状态。
•如果引擎决定移动当前处于阶跃状态的MV，校正动作计划将取代测试动作计划，但阶跃持续计数器将被单独留下。
当需要校正移动时，智能向导引擎综合考虑各种因素来确定哪个MV动作。处于空闲状态的MV（STMVSTATUS =SUSPEND,TEST, STEP NEXT,SKIP）将被首先考虑。LP成本（CST）和LP标准（LPCRIT）也被考虑在内。使用LP成本和LP标准可允许引擎优先选择基于工程师整定的MVs。
也可以看看
智能向导应用中的修正模式
智能向导应用中的复位模式
智能向导应用参数整定
测试信号

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附原文：
When the SmartStep engine detects that a CV will violate limits, it attempts a series of correcting moves to avoid the violation. Correcting moves can be made by MVs that belong to groups in TEST, TEST NO_PULSE, or SUSPEND modes.
The STCMFLAG parameter is used to specify the number of consecutive correcting moves the SmartStep engine should attempt before switching to CORRECTING or REPOSITION mode. A correcting move is implemented in the same way that a user requested target change is implemented.
Properties of correcting moves include the following:
•The move plan for the correcting move will not violate minimum or maximum movement criteria (STMVMAXU, STMVMAXD, STMVMINU, STMVMIND).
•No high or medium frequency pulses are superimposed onto a correcting move plan.
•The MV undergoing the correction move will show STEPPING until it reaches its new target and then it will return to the state it had before the move was initiated.
•If the engine decides to move a currently stepping MV, the correcting move plan will replace the test move plan, but the step duration counter will be left alone.
When a correcting move is needed, the SmartStep engine considers a variety of factors to determine which MV to move. MVs that are currently idle (STMVSTATUS = SUSPEND, TEST, STEP NEXT, SKIP) are considered first. Both the LP cost (CST) and LP criterion (LPCRIT) are also taken into account. Using the LP cost and LP criterion allows the engine to preferentially choose the MVs based on engineer tuning.
See Also
CORRECTING mode in a SmartStep application
REPOSITION mode in a SmartStep application
Tuning parameters in a SmartStep application
Test signal

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2015/10/26