Method and device for monitoring an engagement process of an engaging pinion of a starter motor
First Claim
1. A method for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved by a solenoid having a magnet having a magnetic coil, the method comprising:
- starting the engagement process by setting the armature of the starter motor in motion via the solenoid, wherein the magnetic coil of the solenoid is supplied with current;
detecting a magnetic coil signal of the magnetic coil when current is applied to the magnetic coil of the magnet, to obtain a signal profile;
generating a frequency profile by transforming the signal profile using a time-frequency transform;
comparing the frequency profile to at least two reference frequency profiles, wherein one of the reference frequency profiles is associated with a successfully carried out engagement process, and another of the reference frequency profiles is associated with an unsuccessfully carried out engagement process; and
monitoring the engagement process based on the comparison by ascertaining a quality of the engagement process.
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Accused Products
Abstract
A method for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved, includes detecting a magnetic coil signal while current is applied to the magnetic coil of the magnet, in order to obtain a signal profile, particularly a current profile; generating a frequency profile by transforming the signal profile using a time-frequency transform; comparing the frequency profile to at least one reference frequency profile; and monitoring the engagement process based on the comparison.
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Citations
14 Claims
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1. A method for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, in which an armature of the starter motor is moved by a solenoid having a magnet having a magnetic coil, the method comprising:
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starting the engagement process by setting the armature of the starter motor in motion via the solenoid, wherein the magnetic coil of the solenoid is supplied with current; detecting a magnetic coil signal of the magnetic coil when current is applied to the magnetic coil of the magnet, to obtain a signal profile; generating a frequency profile by transforming the signal profile using a time-frequency transform; comparing the frequency profile to at least two reference frequency profiles, wherein one of the reference frequency profiles is associated with a successfully carried out engagement process, and another of the reference frequency profiles is associated with an unsuccessfully carried out engagement process; and monitoring the engagement process based on the comparison by ascertaining a quality of the engagement process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, wherein an armature of the starter motor is moved by a solenoid having a magnet having a magnetic coil, comprising:
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a sensor configured to detect a magnetic coil signal when a current acts on a magnetic coil of the magnet, so as to obtain a signal profile, wherein the engagement process is started by setting the armature of the starter motor in motion via the solenoid, wherein the magnetic coil of the solenoid is supplied with current; and a processor configured to perform the following; detecting a magnetic coil signal of the magnetic coil when current is applied to the magnetic coil of the magnet, to obtain a signal profile; generating a frequency profile by transforming the signal profile using a time-frequency transform; comparing the frequency profile to at least two reference frequency profiles, wherein one of the reference frequency profiles is associated with a successfully carried out engagement process, and another of the reference frequency profiles is associated with an unsuccessfully carried out engagement process; and monitoring the engagement process based on the comparison by ascertaining a quality of the engagement process.
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13. A device for monitoring an engagement process of an engaging pinion of a starter motor for a vehicle drive, wherein an armature of the starter motor is moved by a solenoid having a magnet having a magnetic coil, comprising:
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a sensor configured to detect a magnetic coil signal when a current acts on a magnetic coil of the magnet, so as to obtain a signal profile, wherein the engagement process is started by setting the armature of the starter motor in motion via the solenoid, wherein the magnetic coil of the solenoid is supplied with current; and a processor configured to perform the following; detecting a magnetic coil signal of the magnetic coil when current is applied to the magnetic coil of the magnet, to obtain a signal profile; generating an observation profile by observing the signal profile; comparing the observation profile to at least two reference frequency profiles, wherein one of the reference frequency profiles is associated with a successfully carried out engagement process, and another of the reference frequency profiles is associated with an unsuccessfully carried out engagement process; and monitoring the engagement process based on the comparison by ascertaining a quality of the engagement process. - View Dependent Claims (14)
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Specification