Automotive electronic control systems
AssigneeGrau GmbH
InventorRaymond S. Porter
Life of this patent
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Abstract
A method of increasing the immunity of an automotive electronic control system to electromagnetic interference, comprises the steps of measuring the impedance of means conducting an input to a control circuit (4) of the system, and adapting the circuit so as at least substantially to match the input impedance of the control circuit (4) in relation to that input to the measured impedance of said means (2) conducting said input. The invention also provides an automotive electronic control system comprising a control circuit (4) having its input impedance at least substantially the same as, and preferably at least substantially matched to, the impedance of means (2) conducting the relevant input to the control circuit.
Claims17
A method of increasing the immunity to electromagnetic interference of an automotive electronic control system selected from the group comprising an electronically controlled braking system, which is selected from the sub-group comprising "brake-by-wire" and an electronic anti-lock system, an electronic engine management system, an electronically controlled suspension system and an electronic traction control system, comprising the steps of measuring the impedance of at least one means conducting an input to a control circuit of the system, and adapting the control circuit to match the relevant input impedance of the control circuit to the measured impedance of said means conducting said input.
An automotive electronic control system selected from the group comprising an electronically controlled braking system, which is selected from the sub-group comprising "brake-by-wire" and an electronic anti-lock system, an electronic engine management system, an electronically controlled suspension system and an electronic traction control system comprising a control circuit having at least one input impedance the same as the impedance of means conducting the relevant input to the control circuit.
Dependencies are inferred from the claim text.