发明名称 |
SPRAY SYSTEM PRESSURE AND RATIO CONTROL |
摘要 |
A control method for a two-component spray system having first and second pumps for separate fluid components includes registering a target spray pressure, registering a target primary-to-secondary spray component flow ratio, sensing an output pressure of the first pump, controlling the first pump to a first speed set via a proportional-integral-derivative loop using the sensed output pressure and the target spray pressure, and controlling the second pump to a second speed equal to the first speed multiplied by the target primary-to-secondary spray component flow ratio. |
申请公布号 |
US2016167066(A1) |
申请公布日期 |
2016.06.16 |
申请号 |
US201414905197 |
申请日期 |
2014.07.18 |
申请人 |
GRACO MINNESOTA INC. |
发明人 |
Fehr David L.;Ingebrand John R.;Shaffer Jeffrey U. |
分类号 |
B05B7/12;B05B7/04 |
主分类号 |
B05B7/12 |
代理机构 |
|
代理人 |
|
主权项 |
1. A spray system comprising:
a first fluid source configured to provide a first fluid; a second fluid source configured to provide a second fluid; a sprayer configured to combine and spray the first and second fluids; a first pump configured to pump the first fluid at a variable first pumping speed from the first fluid source to the sprayer; a second pump configured to pump the second fluid at a variable second pumping speed from the second fluid source to the sprayer; a first pressure sensor disposed to sense a first output pressure of the first pump; and a controller configured to control the first pumping speed via a proportional-integral-derivative loop using the sensed first output pressure and a target spray pressure, and configured to command the second pumping speed to the first pumping speed times a target primary-to-secondary spray component flow ratio. |
地址 |
Minneapolis MN US |