Operating method for a machine which is driven using a drive, with state identification by means of frequency analysis

A computer program stored on a non-transitory computer-readable medium having machine code wherein the machine code when loaded into a memory of that can be directly executed by a control device for a machine having a drive, the execution of the machine code causing and executed by the control device, causes the control device to operate the machine, said computer program comprising:

• program means for connecting the drive to a power supply using at least one actuator, so that the drive starts from a standstill when connected to the power supply, and the drive directly or indirectly excites the machine to vibrate over a frequency range;
• program means for detecting a time-dependent signal that is characteristic of the excited vibrations;
• program means for analyzing the frequency of the time-dependent signal;
• program means for determining a state of at least one element of the machine using a relation of the frequency analysis to the excitation;
• program means for outputting a message concerning the determined state of the at least one element of the machine to an operator of the machine;
• and
• program means for applying an interference variable to the drive to excite vibrations, said interference variable having at least one frequency inside the frequency range.

A non-transitory data storage medium on which a computer program is stored in machine-readable form, said computer program having machine code that can be directly executed by a control device for a machine having a drive, the execution of the machine code causing the control device to operate the machine by:

• connecting the drive to a power supply using at least one actuator, so that the drive starts from a standstill when connected to the power supply, and the drive directly or indirectly excites the machine to vibrate over a frequency range;
• detecting a time-dependent signal that is characteristic of the excited vibrations;
• analyzing the frequency of the time-dependent signal;
• determining a state of at least one element of the machine using a relation of the frequency analysis to the excitation,
• outputting a message concerning the determined state of the at least one element of the machine to an operator of the machine;
• and
• applying an interference variable to the drive to excite vibrations, said interference variable having at least one frequency inside the frequency range.

A control device for a machine having a drive and a computer program, said control device comprising:

• means for connecting the drive to a power supply using at least one actuator, so that the drive starts from a standstill when connected to the power supply, and the drive directly or indirectly excites the machine to vibrate over a frequency range;
• means for detecting a time-dependent signal that is characteristic of the excited vibrations;
• means for analyzing the frequency of the time-dependent signal;
• means for determining a state of at least one element of the machine using a relation of the frequency analysis to the excitation,
• means for outputting a message concerning the determined state of the at least one element of the machine to an operator of the machine;
• and
• means for applying an interference variable to the drive to excite vibrations, said interference variable having at least one frequency inside the frequency range.

A machine having a drive, a control device, and a sensor, said machine comprising:

• means for connecting the drive to a power supply using at least one actuator, so that the drive starts from a standstill when connected to the power supply, and the drive directly or indirectly excites the machine to vibrate over a frequency range;
• means for detecting a time-dependent signal that is characteristic of the excited vibrations;
• means for analyzing the frequency of the time-dependent signal;
• means for determining a state of at least one element of the machine using a relation of the frequency analysis to the excitation,
• means for outputting a message concerning the determined state of the at least one element of the machine to an operator of the machine;
• and
• means for applying an interference variable to the drive to excite vibrations, said interference variable having at least one frequency inside the frequency range.