Method for regulating a volume flow rate and test stand for simulating a liquid circuit
AssigneedSPACE digital signal processing and control engineering GmbH
InventorFabian FEILCKE
Life of this patent
Estimating the term…
Abstract
A method for regulating a volume flow rate, and a test stand with a liquid circuit for carrying out the method is provided. A pump and a flow control valve are connected in series in the liquid circuit, and the orifice width of the flow control valve is set as a function of a setpoint value of the volume flow rate of the liquid, in order to specify, on the basis of the orifice width, a characteristic curve of the pump that plots the volume flow rate over the differential pressure. Once a characteristic curve has been specified, the differential pressure of the pump is set such that the volume flow rate corresponds to the setpoint value of the volume flow rate.
Claims13
A method for regulating a volume flow rate of a first liquid circuit having a liquid, the method comprising:
- connecting a pump and a flow control valve in series in the first liquid circuit;
- setting an orifice width of the flow control valve as a function of a setpoint value of the volume flow rate of the liquid such that a first derivative of a characteristic curve, which plots the volume flow rate over a differential pressure of the pump, has a value that, at the setpoint value of the volume flow rate, is favorable for regulating the volume flow rate by setting the differential pressure;
- and
- setting the differential pressure of the pump such that the volume flow rate substantially corresponds to the setpoint value of the volume flow rate.
A test stand for simulating a liquid circuit for temperature regulation, the test stand comprising:
- a first liquid circuit with a liquid;
- a pump;
- and
- a flow control valve, the pump and the flow control valve being connected in series in the first liquid circuit,
- wherein the test stand is configured to read in a setpoint value of a volume flow rate of the liquid and set an orifice width of the flow control valve as a function of the setpoint value of the volume flow rate such that a first derivative of a characteristic curve, which plots the volume flow rate over a differential pressure of the pump, has a value that, at the setpoint value of the volume flow rate, is favorable for regulating the volume flow rate by setting the differential pressure, and
- wherein the test stand adjusts the differential pressure of the pump such that the volume flow rate substantially corresponds to the setpoint value of the volume flow rate.
Dependencies are inferred from the claim text.