公开(公告)号：US20180089148A1

公开(公告)日：2018-03-29

申请号：US15361078

申请日：2016-11-25

Applicant: Industrial Technology Research Institute

Inventor： Jyun-Sian Li ,  Yi-Cheng Cheng ,  Chen-Kai Hsu ,  Chun-Yen Chen

IPC: G06F17/18

CPC classification number: F04B51/00 ,  F01D21/00

Abstract: A disturbance source tracing method adapted for tracing a disturbance source of a system including a plurality of candidate nodes by a computing apparatus is provided. In this method, the computing apparatus obtains a plurality of topology information by analyzing the system using a plurality of process analyzing methods respectively. The topology information records causalities between the candidate nodes of the system. The computing apparatus applies each causality of the topology information to a probability distribution algorithm, and calculates a stationary probability distribution of each of the candidate nodes. The computing apparatus also synthesizes the stationary probability distributions calculated with respect to each process analyzing method to calculate a probability distribution of each of the candidate nodes being the disturbance source.

公开(公告)号：US09958839B2

公开(公告)日：2018-05-01

申请号：US14963244

申请日：2015-12-09

Applicant: Industrial Technology Research Institute

Inventor： Jyun-Sian Li ,  Yi-Cheng Cheng ,  Chen-Kai Hsu ,  Chun-Yen Chen

IPC: G05B13/02 ,  G05B11/36 ,  G05B11/38 ,  G05B11/42

CPC classification number: G05B13/024 ,  G05B11/36 ,  G05B11/38 ,  G05B11/42

Abstract: A parameter tuning method of an unknown proportional-integral-derivative (PID) controller is provided. The unknown PID controller is replaced with the control algorithm of the generic controller to perform the optimal parameter tuning to obtain the target parameter of the generic controller. The unknown PID controller is set with a first parameter group so that the corresponding input signal, the control signal and the output signal are measured for performing the parameter identification procedure of the generic controller to obtain a second parameter group of the generic controller. When the second parameter group is not within a specification range of the target parameter, the first parameter is re-calculated and modified by a direct search method in accordance with the difference between the second parameter group and the target parameter for setting the unknown PID controller again, and then the input signal, the control signal and the output signal are measured again.

公开(公告)号：US20170115641A1

公开(公告)日：2017-04-27

申请号：US14963244

申请日：2015-12-09

Applicant: Industrial Technology Research Institute

Inventor： Jyun-Sian Li ,  Yi-Cheng Cheng ,  Chen-Kai Hsu ,  Chun-Yen Chen

IPC: G05B13/02

CPC classification number: G05B13/024 ,  G05B11/36 ,  G05B11/38 ,  G05B11/42

Abstract: A parameter tuning method of an unknown proportional-integral-derivative (PID) controller is provided. The unknown PID controller is replaced with the control algorithm of the generic controller to perform the optimal parameter tuning to obtain the target parameter of the generic controller. The unknown PID controller is set with a first parameter group so that the corresponding input signal, the control signal and the output signal are measured for performing the parameter identification procedure of the generic controller to obtain a second parameter group of the generic controller. When the second parameter group is not within a specification range of the target parameter, the first parameter is re-calculated and modified by a direct search method in accordance with the difference between the second parameter group and the target parameter for setting the unknown PID controller again, and then the input signal, the control signal and the output signal are measured again.