| 摘要 |
The combine harvester includes an engine, a traction drive transmission, a header, a threshing and separating mechanism and a machine throughput control system having a machine loading control loop operable to produce a signal representative of machine loading. The control system also includes a control loop operable to produce a signal representative of grain loss and having a grain controller operable continously to establish a casual relationship between the machine loading and grain loss. The relationship also holds for machine loading signal, the casual relationship current with that machine loading signal, and a reference loss signal being applied to the grain loss controller to derive a reference machine loading signal. The reference and representative machine loading signals are algebraically summed signal to produce an error signal which is used to control machine throughput.
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