公开(公告)号：EP0360206A3

公开(公告)日：1990-12-19

申请号：EP89117274.4

申请日：1989-09-19

申请人： HITACHI, LTD.

发明人： Saito, Tadayoshi ,  Takahashi, Susumu ,  Tachibana, Kouji ,  Kawakami, Junzo ,  Yokokawa, Nobuyuki

IPC分类号： G05B13/02

CPC分类号： G05B13/0275 ,  G05B13/024 ,  Y10S706/90

摘要： A self-tuning controller apparatus which com­prises: a control response pattern recognition portion (4) for receiving a set-point (SV) and a controlled variable (PV) of a process and for obtaining three performance indexes from a controlled variable response pattern generated in response to a change in the set-­point or a disturbance; a control parameter correction portion (6) for qualitatively evaluating the three performance indexes and for inferring a correction value of a PID control parameter on the basis of the result of evaluation; and a control performance dissatisfaction degree evaluation portion (7) for evaluating the inferred correction value of the PID control parameter in accordance with the dissatisfaction degrees of the two performance indexes for the respective target speci­fications of the two of the three performance indexes. The control performance dissatisfaction degree evalua­tion portion acts to make the PID control parameter converge stably. In a process control system including a plurality of vertically distributed control elements each capable of self-tuning its control parameter, the control performance dissatisfaction degree evaluation portion contributes to autonomous functioning of each of the control elements.

公开(公告)号：EP0360206A2

公开(公告)日：1990-03-28

申请号：EP89117274.4

申请日：1989-09-19

申请人： HITACHI, LTD.

发明人： Saito, Tadayoshi ,  Takahashi, Susumu ,  Tachibana, Kouji ,  Kawakami, Junzo ,  Yokokawa, Nobuyuki

IPC分类号： G05B13/02

CPC分类号： G05B13/0275 ,  G05B13/024 ,  Y10S706/90

摘要： A self-tuning controller apparatus which com­prises: a control response pattern recognition portion (4) for receiving a set-point (SV) and a controlled variable (PV) of a process and for obtaining three performance indexes from a controlled variable response pattern generated in response to a change in the set-­point or a disturbance; a control parameter correction portion (6) for qualitatively evaluating the three performance indexes and for inferring a correction value of a PID control parameter on the basis of the result of evaluation; and a control performance dissatisfaction degree evaluation portion (7) for evaluating the inferred correction value of the PID control parameter in accordance with the dissatisfaction degrees of the two performance indexes for the respective target speci­fications of the two of the three performance indexes. The control performance dissatisfaction degree evalua­tion portion acts to make the PID control parameter converge stably. In a process control system including a plurality of vertically distributed control elements each capable of self-tuning its control parameter, the control performance dissatisfaction degree evaluation portion contributes to autonomous functioning of each of the control elements.

摘要翻译： 一种自调整控制器装置，包括：用于接收过程的设定点（SV）和受控变量（PV）的控制响应模式识别部分（4），并且从生成的受控变量响应模式获得三个性能指标 响应设定点或干扰的变化; 控制参数校正部（6），用于根据评价结果对三个性能指标进行定性评价，并推断PID控制参数的修正值; 以及控制性能不满意度评价部（7），用于根据对于三个性能指标中的两个的各个目标规格的两个性能指标的不满意度来评估PID控制参数的推定校正值。 控制性能不满意度评估部分使PID控制参数稳定收敛。 在包括能够自调整其控制参数的多个垂直分布的控制元件的过程控制系统中，控制性能不满意度评估部分有助于每个控制元件的自主功能。