Control system design for a mixing system with multiple inputs
AssigneeHalliburton Energy Services, Inc.
InventorsJason D. Dykstra, Justin A. Borgstadt
Life of this patent
Estimating the term…
Abstract
A control system for mixing at least two materials in a physical system having two or more tanks comprises at least two actuators, each actuator being operable to introduce a material into a first tank to form a first mixture, the first mixture flowing into a second tank to form a second mixture and a controller operable, based on a commanded input, to control the at least two actuators to obtain a density of either the first mixture or the second mixture and a volume flow rate of the second mixture out of the second tank, wherein the density is controlled independently from the volume flow rate.
Claims34
A control system for mixing at least two materials in a physical system having two or more tanks, comprising:
- at least two actuators, each actuator being operable to introduce a material into a first tank to form a first mixture, the first mixture flowing into a second tank to form a second mixture;
- and
- a controller operable, based on a commanded input, to control the at least two actuators to obtain a density of either the first mixture or the second mixture and a volume flow rate of the second mixture out of the second tank;
- wherein the density is controlled independently from the volume flow rate, and
- wherein the commanded input comprises:
- a commanded combined volume flow rate of the materials passing through the actuators into the first tank [commanded dvin/dt];
- and
- a commanded combined mass flow rate of the materials passing through the actuators into the first tank [commanded dmin/dt].
A control system for mixing at least two materials in a tank, comprising:
- at least two actuators, each actuator being operable to introduce a material into the tank to form a mixture;
- and
- a controller operable, based on a commanded input, to control the at least two actuators to obtain a density of the mixture and a volume flow rate of the mixture out of the tank;
- wherein the density is controlled independently from the volume flow rate, and
- wherein the commanded input comprises:
- a commanded combined volume flow rate of the materials passing through the actuators into the tank [commanded dvin/dt]:
- and
- a commanded combined mass flow rate of the materials passing through the actuators into the tank [commanded dmin/dt].
Dependencies are inferred from the claim text.