초록 ▼

The invention provides a diagnostic method and system for monitoring controller performance. The diagnostic system includes a tool and a controller. The tool includes a user interface that displays at least one operational status command, such that a user may select the operational status command. A

The invention provides a diagnostic method and system for monitoring controller performance. The diagnostic system includes a tool and a controller. The tool includes a user interface that displays at least one operational status command, such that a user may select the operational status command. A controller has an operation status. The operational status command of the tool queries the operation status of the controller. As a result, the controller generates at least one operational status response. A communications path for transmission of the at least one operational status command from the tool to the controller and the at least one operational status response from the controller to the tool is provided. The user interface displays the operational status response of the controller.

대표청구항 ▼

The invention provides a diagnostic method and system for monitoring controller performance. The diagnostic system includes a tool and a controller. The tool includes a user interface that displays at least one operational status command, such that a user may select the operational status command. A

The invention provides a diagnostic method and system for monitoring controller performance. The diagnostic system includes a tool and a controller. The tool includes a user interface that displays at least one operational status command, such that a user may select the operational status command. A controller has an operation status. The operational status command of the tool queries the operation status of the controller. As a result, the controller generates at least one operational status response. A communications path for transmission of the at least one operational status command from the tool to the controller and the at least one operational status response from the controller to the tool is provided. The user interface displays the operational status response of the controller. -order equation which passes within permissible values for an inputted different flow rate Qr and head Hr, said method characterized by comprising: selecting a head H1 for a flow rate Q1 at the best efficiency point on said flow-head characteristic curve Y1, a head H2 for a flow rate Q2 at the best efficiency point on said flow-head characteristic curve Y2, and a head H3 for a flow rate Q3 at the best efficiency point on a desired provisional flow-head characteristic curve Y3=b1+b2x+b3x2+ . . . +bnx(n-1) formed of a high-order equation; and calculating a new flow-head characteristic curve Y3 with use of an equation bn={a1nkh1(1/kq1)(n-1)×(H3-H2)/(H1-H2)}+{a2nkh2(1/kq2)(n-1)×(H1-H3)/(H1-H2)}, and outputting said flow-head characteristic curve Y3 when said flow-head characteristic curve Y3 passes within permissible values for said inputted different flow rate Qr and head Hr, and otherwise correcting respective coefficients of said equation Y3=b1+b2x+b3x2+ . . . +bnx(n-1) and recalculating a head H3 for the flow rate Q3 at the best efficiency point on said flow-head characteristic curve Y3 using the corrected coefficients, wherein kq1is a ratio (=Q3/Q1) of the selected flow rates Q1 and Q3, kh1is a ratio (=H3/H1) of the selected heads H1 and H3, kq2is a ratio (=Q3/Q2) of the selected flow rates Q2 and Q3, and kh2is a ratio (=H3/H2) of the selected heads H2 and H3. 3. A computer-implemented method of calculating various types of characteristic curves of a centrifugal fluid machine according to claim 1, said method characterized in that said characteristic curves Y1, Y2, and Y3 are flow-efficiency characteristic curves. 4. A computer-readable storage medium having a program recorded thereon for executing a procedure with a computer, said procedure comprising: selecting prescribed coordinates (x1,y1) on a characteristic curve Y1 and corresponding prescribed coordinates (x2,y2) on a characteristic curve Y2 using the two prescribed characteristic curves Y1=a11+a12x+a13x2+ . . . +a1nx(n-1) and Y2=a21+a22x+a23x2+ . . . +a2nx(n-1) formed of high-order equations for a centrifugal fluid machine; selecting prescribed coordinates (x3,y3) on a characteristic curve Y3 formed of a high-order equation indicating a desired equation Y3=b1+b2x+b3x2+ . . . +bnx(n-1) ; and calculating and outputting a characteristic curve Y3=b1+b2x+b3x2+ . . . +bnx(n-1) formed of a high-order equation which passes through said coordinates (x3,y3), with use of an equation bn={a1nkh1(1/kq1)(n-1)×(y3-y2)/(y1-y2)}+{a2nkh2(1/kq2)(n-1)×(y1-y3)/(y1-y2)}, wherein kq1is a ratio (=x3/x1) of the selected coordinates x1and x3,kh1is a ratio (=y3/y1) of the selected coordinates y1and y3,kq2is a ratio (=x3/x2) of the selected coordinates x2and x3,and kh2is a ratio (=y3/y2) of the selected coordinates y2and y3. 5. A computer-implemented method of converting coordinates in drawing a high-order curve, wherein a high-order curve Y1=a1+a2x+a3x2+ . . . +anx(n-1) expressed in prescribed coordinates is converted into a high-order curve Y2=b1+b2x+b3x2+ . . . +bnx(n-1) expressed in different coordinates for drawing the converted high-order curve with a computer, said method characterized by comprising: calculating a geometric conversion coefficient kx(=a value of the different coordinate/a value of the prescribed coordinate) for the direction of the X coordinate axis and a geometric conversion coefficient ky(=a value of a different coordinate/a value of a prescribed coordinate) for the direction of the Y coordinate axis; and calculating respective coefficients bn(n=1-n) of said equation Y2=b1+b2x+b3x2+ . . . +bnx(n-1) according to an equation bn=an×ky/(kx)(n-1) with use of the coefficients an(n=1-n) for each of orders of said high-order curve Y1 and said geometric conversion coefficients kxand ky,and substituting said coefficients bnfor said equation Y2=b1+b2x+b3x2+ . . . +bnx(n-1) to convert said high-order curve Y1 into said high-order curve Y2. 6. A computer-readable storage medium having a program recorded thereon for executing a procedure with a computer, said procedure comprising: calculating a geometric conversion coefficient kx(=a value of a different coordinate/a value of a prescribed coordinate) for the direction of the X coordinate axis and a geometric conversion coefficient ky(=a value of the different coordinate/a value of the prescribed coordinate) for the direction of the Y coordinate axis for converting between a high-order curve Y1=a1+a2x+a3x2+ . . . +anx(n-1) expressed in the prescribed coordinates and a high-order curve Y2=b1+b2x+b3x2+ . . . +bnx(n-1) expressed in the different coordinates; calculating respective coefficients bn(n=1-n) of said equation Y2=b1+b2x+b3x2+ . . . +bnx(n-1) according to an equation bn=an×ky/(kx)(n-1) with use of the coefficients an(n=1-n) for each of orders of said high-order curve Y1 and the geometric conversion coefficients kxand ky,and substituting said coefficients bnfor said equation Y2=b1+b2x+b3x2+ . . . +bnx(n-1) to convert said high-order curve Y1 into said high-order curve Y2; and drawing the converted high-order curve Y2.