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Actuator with Feedforward Control

A feedforward control, actuator technology, applied in electrical control, engine control, fuel injection control, etc., can solve problems such as instability of fuel injection events

Inactive Publication Date: 2018-03-13
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, this subsequent fuel injection event may become erratic, resulting in unacceptable repeatability

Method used

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  • Actuator with Feedforward Control
  • Actuator with Feedforward Control
  • Actuator with Feedforward Control

Examples

Experimental program
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Embodiment Construction

[0050] This disclosure describes the principles of the presently claimed subject matter with respect to an exemplary application of a linear motion fuel injector. However, the claimed subject matter is more broadly applicable to any linear or non-linear electromagnetic actuator that uses an electrical coil to induce a magnetic field within a magnetic core to generate an attractive force on a movable armature. Typical examples include fluid control solenoids, gasoline or diesel or CNG fuel injectors used on internal combustion engines and non-fluid solenoid actuators for positioning and control.

[0051] Referring now to the drawings, in which are shown for purposes of illustrating certain exemplary embodiments only and not for purposes of limitation, Picture 1-1 A non-limiting exemplary embodiment of an electromagnetically actuated direct injection fuel injector 10 is shown schematically. Although electromagnetically actuated direct injection fuel injectors are depicted in th...

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PUM

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Abstract

An actuator with feedforward control is disclosed. An electromagnetic actuation system includes an actuator having an electrical coil, a magnetic core, and an armature. The system further includes a controllable bi-directional drive circuit for selectively driving current through the electrical coil in either of two directions. The control module provides actuator commands to the drive circuit effective to drive current through the electrical coil in a first direction to actuate the armature, and after actuation of the armature through the electrical coil in a second direction to resist actuation. residual magnetic flux in the actuator. The control module includes a feedforward control module configured to modify the actuator command to converge residual flux within the actuator to a preferred flux level.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Application No. 61 / 968,026, filed March 20, 2014, U.S. Provisional Application No. 61 / 968,039, filed March 20, 2014, and U.S. Provisional Application No. 61 / 968,039, filed March 20, 2014 No. 61 / 955,942, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to solenoid actuated actuators. Background technique [0004] The statements in this section merely provide background information related to the present disclosure. Accordingly, this statement is not intended to constitute an admission of prior art. [0005] Solenoid actuators can be used to control fluids (liquids and gases), either for positioning or for control functions. A typical example of a solenoid actuator is a fuel injector. Fuel injectors are used to inject pressurized fuel into the manifold, into the intake port, or directly into the combusti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M51/06F02D41/30
CPCF02D41/20F02D2041/141F02D2041/2058F02D2041/2072
Inventor C·S·纳穆杜里S·戈帕拉克里什南T·W·内尔A·M·奥梅肯达
Owner GM GLOBAL TECH OPERATIONS LLC