Hello all,

I am trying to write a fuzzy controller and I have noticed an ambiguity in the CPU12 Reference Manual. In Section 6(Instruction Glossary) of the RM, page 243, in the "MEM" instruction it writes:

"a 4-byte data structure that describes a trapezoidal

membership function. The data structure consists of:

• Point_1 — The x-axis starting point for the leading side (at MX)

• Slope_1 — The slope of the leading side (at MX+1)

• Point_2 — The x-axis position of the rightmost point (at MX+2)

• Slope_2 — The slope of the trailing side (at MX+3); the right side

slopes up and to the left from point_2 "

And in Section 9(fuzzy logic support) of the RM, page 341, it writes (figure 9-4)

"ADDR $40 X-POSITION OF point_1

ADDR+1 $D0 X-POSITION OF point_2

ADDR+2 $08 slope_1 ($FF/(X-POS OF SATURATION – point_1))

ADDR+3 $04 slope_2 ($FF/(point_2 – X-POS OF SATURATION))"

So what is the right format for the membership function's data structure,

point1,point2,slope1,slope2

or

point1,slope1,point2,slope2

Thank you all in advance,

Anastasios

I am trying to write a fuzzy controller and I have noticed an ambiguity in the CPU12 Reference Manual. In Section 6(Instruction Glossary) of the RM, page 243, in the "MEM" instruction it writes:

"a 4-byte data structure that describes a trapezoidal

membership function. The data structure consists of:

• Point_1 — The x-axis starting point for the leading side (at MX)

• Slope_1 — The slope of the leading side (at MX+1)

• Point_2 — The x-axis position of the rightmost point (at MX+2)

• Slope_2 — The slope of the trailing side (at MX+3); the right side

slopes up and to the left from point_2 "

And in Section 9(fuzzy logic support) of the RM, page 341, it writes (figure 9-4)

"ADDR $40 X-POSITION OF point_1

ADDR+1 $D0 X-POSITION OF point_2

ADDR+2 $08 slope_1 ($FF/(X-POS OF SATURATION – point_1))

ADDR+3 $04 slope_2 ($FF/(point_2 – X-POS OF SATURATION))"

So what is the right format for the membership function's data structure,

point1,point2,slope1,slope2

or

point1,slope1,point2,slope2

Thank you all in advance,

Anastasios