172
Motion Control Theory
b. Mode 2: PWM frequency mode with fixed width
This control mode changes PWM frequency according to speed at
fixed PWM pulse width. Under fixed PWM pulse width W, the VAO
table gives PWM frequency 1/T
1
, 1/T
2
and 1/T
3
at speed V
1
, V
2
and V
3
as shown in figure below. To use this mode to
1. Set up control mode: Use APS_set_vao_param( ) to set
up
value of VAO_TABLE_OUTPUT_TYPE
parameter to 0x2
.
2. Set up fixed PWM output pulse width:
Use APS_set_vao_param( ) to set up parameter
VAO_TABLE_PWM_Config in unit of ns. Valid input
range is 20ns ~ 335544320 ns
。
Содержание PCI-8254
Страница 2: ...ii Revision History Revision Date Description 2 00 2014 08 13 First release ...
Страница 8: ...viii Table of Contents Important Safety Instructions 209 Getting Service 211 ...
Страница 12: ...xii List of Figures ...
Страница 14: ...xiv List of Tables ...
Страница 24: ...10 Introduction ...
Страница 54: ...40 Getting Start with The Installation ...
Страница 78: ...64 Signal Connection ...
Страница 111: ...Motion Control Theory 97 PCI 8254 PCI 8258 MCP2 Bode plot page ...
Страница 165: ...Motion Control Theory 151 PCI 8254 PCI 8258 Example Figure 4 55 Continuous interpolation examples ...
Страница 222: ...208 Motion Control Theory ...