Method and device for diagnosing a position encoder

Abstract

The invention relates to a method and a device for diagnosing a position encoder. The position encoder comprises a position encoder motor controlled by a plurality of terminals so that a mixup of at least two of the terminals of the position encoder motor leads to a reversal of the actuating direction of the position encoder, having the following steps: setting an actuating element of the position encoder to a zero setting (N), from which a motion of the actuating element is possible in one or two directions; controlling the position encoder motor according to a diagnostic variable, which is selected so that, in the case of a non-mixup of the terminals and in the case of a mixup of the terminals, different values of the changes are to be expected in the changes of the actuation position of the actuating element; detecting a change in the actuation position of the actuating element that comes about by the controlling of the position encoder motor; establishing a mixup of at least two of the terminals, if the value of the current change of the actuation position of the actuating element (4) deviates from the value of the change in the actuation position that is to be expected.

Description

technical field [0001] The invention relates to an engine system with a steering transmitter which can be activated electrically via a control unit. The adjustment position of the adjustment transmitter can be detected by one or more suitable adjustment transmission sensors, and fed back to the control unit to check the rationality of the required adjustment position. Background technique [0002] In engine systems equipped with internal combustion engines a series of electrically activated adjustment transmitters is usually used, the adjustment position of which is detected by suitable sensors so that their corresponding adjustment position can be checked when the relevant adjustment transmitter is activated. Examples of suitable adjustment transmitters of this type are, for example, throttle valves in the intake system of the relevant internal combustion engine, exhaust gas recirculation valves, blow-off valves for controlling turbochargers, etc. [0003] Usually a direct...

AI Technical Summary

Problems solved by technology

[0004] Especially in the early stages of development where the electrical connections of the entire system are not fully or partially made with anti-reverse plug connectors, mismatched cable harnesses, misconfigured software adjacent to the hardware, or wrong pin configurations can lead to misconnection of the connecting wires , resulting in incorrect orientation of the triggering of the adjustment transmitter and / or incorrect feedback signals from the adjustment transmitter sensor mounted on the adjustment transmitter

If the adjustment transmitter motor connection is wrong and / or the adjustment transmitter sensor connection is wrong, in some cases this may cause such consequences: When professionals are looking for a fault, if the position feedback signal of the adjustment transmitter sensor is used Simple plausibility checks by tweaking transmitter functions can be misleading and thus labor-intensive to find faults

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