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US 12,071,987 B2Granted
System and method for operating two or more actuators
AssigneeDana Italia S.R.L.
InventorsAlessandro Di Lisa, Mario Gelmini, Claudio Angeloni, Fabio Gunsch
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Abstract
Methods and systems for operating a plurality of electrical loads are described. In one example, the systems include electrical circuits for operating solenoid valves of a transmission that may be operated to simultaneously control two or more clutches for engaging and disengaging transmission gears. The systems and method may reduce hardware costs.
Claims20
An electrical circuit, comprising:
- a single high side current control device;
- two or more low side switching devices electrically coupled in parallel;
- two or more electrical loads electrically coupled in parallel to the high side current control device and the plurality of low side switching devices;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to switch a first of the two or more low side switching devices at a first frequency and a first duty cycle, and instructions to switch a second of the two or more low side switching devices at the first frequency and a second duty cycle.
2 more elements
A method for operating an electrical circuit, comprising:
- switching a first switching device at a first duty cycle and at a first frequency, wherein the first switching device controls electric current flow through a first electric device;
- switching a second switching device at the first frequency and at a second duty cycle, wherein the second switching device controls electric current flow through a second electric device;
- and
- adjusting electric power supplied to the first electric device and the second electric device via a device that is positioned downstream of a power supply and upstream of the first electric device and the second electric device.
1 more element
An electrical circuit, comprising:
- two or more electric loads;
- two current control devices coupled to and positioned between the two or more electric loads and a high voltage terminal of an electric power source;
- one sole switching devices electrically coupled in parallel and positioned between the two or more electric loads and a low voltage terminal of the electric power source;
- and
- a controller including executable instructions stored in non-transitory memory to cause the controller to adjust electric current flowing through at least one of the two current control devices to a first amount when a first of the two or more switching devices is activated, and instructions to adjust electric current flowing through the at least one of the two current control devices to a second amount when a second of the two or more switching devices is activated, the first amount different from the second amount.
2 more elements
Dependencies are inferred from the claim text.