| 摘要 |
<p>A milking system (10) uses a variable pressure source (82) and varies the pressure supplied to the pulsation chamber (32) along a controllably variable pressure curve of selectable waveshape. Pulsation cycles are shortened by shortening the transition time between pressure levels providing on and off portions of the pulsation cycle. The pulsation chamber (32) is sequenced through different pressure change rates, all during the transition. Pressure transition times during pulsation cycles are varied at the beginning, middle and end of a milking interval to provide a faster rate of liner opening movement at the beginning of the milking interval to provide deeper teat penetration into the liner, and intermediate rate of liner opening movement during the middle of the milking interval, and a slower rate of liner opening movement at the end of the milking interval to limit loss of adhesion between a less than full teat and the interior of the liner.</p> |
