Analog fluidic devices and systems
AssigneeFacebook Technologies, LLC
InventorCasey Glick
Life of this patent
Estimating the term…
Abstract
In some examples, a device includes a fluidic circuit may be configured to receive a fluidic input (and optionally a fluidic bias) and to provide a fluidic output based on the fluidic input. In some examples, the fluidic output may be a fluidic difference output based on a difference (such as a pressure and/or flow difference) between the fluidic input and a fluidic bias. In some examples, a device includes a fluidic amplifier configured to receive the fluidic difference output, and to provide a device fluidic output based on the fluidic difference output. The device fluidic output may be provided to a fluidic load, which may include an actuator and/or a haptic device.
Claims18
A device, comprising:
- a fluidic differential circuit including a first fluidic valve and a second fluidic valve, configured to receive a fluidic input and a fluidic bias, and provide a fluidic difference output correlated with a difference between the fluidic input and the fluidic bias;
- a fluidic current mirror configured to balance a first fluid flow to the first fluidic valve and a second fluid flow to the second fluidic valve;
- and
- a fluidic amplifier, configured to receive the fluidic difference output and provide a device fluidic output based on the fluidic difference output.
A device comprising:
- a fluidic differential circuit, configured to receive a fluidic input and a fluidic bias, and provide a fluidic difference output correlated with a pressure difference between the fluidic input and the fluidic bias,
- wherein the fluidic differential circuit comprises
- a first fluidic valve having a first source, a first drain, and a first gate, and
- a second fluidic valve having a second source, a second drain, and a second gate;
- a fluidic current mirror configured to balance a first fluid flow to the first fluidic valve and a second fluid flow to the second fluidic valve;
- and
- a fluidic amplifier configured to receive the fluidic difference output and to provide a fluidic output based on the fluidic difference output.
A method comprising:
- receiving, by a fluidic differential circuit, a first fluidic input, wherein the fluidic differential circuit includes a first fluidic valve and a second fluidic valve;
- receiving, by the fluidic differential circuit, a second fluidic input;
- providing, using the fluidic differential circuit, a fluidic difference output correlated with a pressure difference between the first fluidic input and the second fluidic input;
- balancing, using a fluidic current mirror, fluid flows to the first fluidic valve and the second fluidic valve of the fluidic differential circuit;
- and
- providing a device fluidic output using a fluidic amplifier configured to receive the fluidic difference output and provide the device fluidic output based on the fluidic difference output.
Dependencies are inferred from the claim text.