| 摘要 |
The pneumatic PID circuit includes a regulator which has a pressure difference amplifier which receives input signals from pressure dividers. These work in conjunction with throttle resistances which are adjustable. The pressure difference amplifier has two output channels delivering two different signals which alter as the input signal varies, but in opposite directions. These output signals affect selectively the pressure divider and throttle controlled by the actual value or those controlled by the required value. A similar circuit arrangement may be used as a P-regulator, a PD regulator or a PI regulator. |
