A method for the optimization of the valve position and the rotational speed of the pump in a valve system with pid - control without the use of external signals

摘要

The present invention provides an algorithm, which operates by flow reference data, which, as a function of various pumps - and engine parameters such as speed, torque or power or from calibrated by flow curves, which are stored in an evaluation unit, or from an external unit such as a through flow respect of a flowmeter can be determined mathematically. As soon as the valve with pid - control has reached its static state, is detected and a calculated flow-rate value with the actual flow-rate value of the according to the decrease in the frequency (speed) of the frequency converter drive is obtained compared. The valve setting is shortly before the engine speed threshold, in which the through flow condition of the algorithm is no longer perceived optimized.