| 摘要 |
A multi-purpose controller (figure 1) for variables which closely controls such variables to set point by making sequential corrections to the level of input to the system of the variable based on system response time, relationship of controller output to the variable, deviation of the variable from set point, and change in system load as determined by change in error and change in the system input. A controller having a microprocessor (50) connected via address bus (58) and data bus (59) to clock (52), non-volatile RAM (54), ROM (56) and input/output register (60) and data bus (59) is connected to communication interface (70). The controller has a self tuning capability and can provide generation of the set point according to a set of variable parameters. It can be configured as a stand alone controller, as an intelligent Input/Output device for another intelligent device, or be resident in another intelligent device such as a programmable controller, computer or other microprocessor based device.
|
