Ksb Aktiengesellschaft

Ksb Se & Co. Kgaa

Stefan Laue

Jochen Schaab

Christoph Emde

Joachim Schullerer

Marjan Silovic

Bernd Schramm

Martin Eckl

Gerd Ebelt

Lutz Urban

Christoph Hamkins

Alexander BÖHM

Ursula Kronfeld

Manuel Bernhardt

Georg Herzing

Patrick Hauck

Frank Obermair

Josephine Vega-VÖLK

The invention relates to a method for determining the delivery rate of a pump. In this context, a value of the delivery level and a value of the power of the pump are determined. A probability density function is calculated for the delivery level and the power. A first probability density function of the delivery rate is calculated on the basis of a delivery level-delivery rate relationship and the probability density function of the delivery level. A second probability density function of the delivery rate is determined on the basis of a power-delivery rate relationship and the probability density function of the power. A combined probability density function of the delivery rate is determined on the basis of the first and second probability density functions. The delivery rate is determined on the basis of the combined probability density function.

Determining the delivery rate of a pump

Method and apparatus for determining an operating point of a work machine and/or asynchronous motor driving the same, the operating point being characterized by the power consumed by and/or output rate of the machine, in which one or more operating point-dependent measurement variables of the machine are detected by sensors, and the measured values are evaluated and/or stored during operation of the machine. The operating point is determined without using electric measurement variables of the motor by determining a frequency linearly proportional to the fundamental tone of the machine through signal analysis, especially frequency analysis of a measured mechanical variable selected from pressure, differential pressure, power, vibration, and solid-borne or air-borne sound. From this, the rotational speed of the driving machine is determined, and the operating point characterized by the power consumed by and/or output rate of the machine is determined utilizing the rotational speed/torque relationship of the motor.

Method and apparatus for determining an operating point of a work machine

Growing community of inventors

Woellstein, Germany

Stefan Laue