Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
  • G01M15/00—Testing of engines
  • G01M15/02—Details or accessories of testing apparatus
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Programme-control systems
  • G05B19/02—Programme-control systems electric
  • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
  • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
  • G05B19/0428—Safety, monitoring
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B23/00—Testing or monitoring of control systems or parts thereof
  • G05B23/02—Electric testing or monitoring
  • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
  • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
  • G05B23/0283—Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL]
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
  • G07C3/14—Quality control systems
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B2219/00—Program-control systems
  • G05B2219/20—Pc systems
  • G05B2219/24—Pc safety
  • G05B2219/24015—Monitoring

Definitions

• the invention relates to an electric drive unit with an electric motor and an adapter for an electric fresh drive unit.
• Electric drive units of the type in question are regularly subject to some wear. This leads to maintenance and / or repairs becoming necessary.
• the first and simplest of these strategies is to perform War ⁇ obligations at regular intervals.
• the disadvantage of this strategy is that the War ⁇ maintenance intervals are chosen comparatively short Müs ⁇ sen to guarantee safe. In practice, this leads to a large number of superfluous maintenance work being carried out.
• control ⁇ means of the electric drive unit as a function of measured operating variables, such as gemes ⁇ sener operating times, a potential maintenance requirements determined. Operating times here are to be understood as the times in which the electric drive unit actually in operation or - in other words - the electric motor actually drives something.
• US 2006 074 513 AI discloses a sensor set attached to the engine with a monitor system.
• DE 38 28 207 A1 discloses a diagnostic connector with which the collected parameters of a machine or pump can be read out and evaluated.
• US 5 726 911 A discloses a monitor system arranged on the housing of an electric motor which detects, processes and stores parameters. The data can then be forwarded to an external system for further processing.
• the disadvantage of these systems is that the data of a zen ⁇ spectral evaluation unit must be supplied in order to determine the maintenance and repair requirements. Because electric drive units are common components com ⁇ plex electrical systems in which the operating times per fixed time interval can vary extremely different, so can be realized in many cases considerably longer maintenance intervals. Of course, this is particularly advantageous when the electric drive unit in a technical system only rarely and / or only for a short time in operation.
• the disadvantage is that the respective control unit is tuned very precisely to the electric drive unit.
• the present invention is now based on the object to show an electric drive unit, which has a reduction in the need for maintenance with high compatibility with other components of technical systems and thus high universal applicability.
• the electric drive unit has an electric motor.
• the drive unit has at least one sensor for measuring at least one operating variable of the electric motor.
• the drive unit comprises an off ⁇ evaluation unit for evaluating the measured operating parameter from the sensor in and / or on the drive unit on ⁇ .
• This evaluation unit is according to the invention set up to evaluate the measured operational size in terms of the need for maintenance and / or repair.
• the evaluation can be based on an operating variable measured by a sensor, but it is also possible that a plurality of operating variables are measured with a single sensor and the evaluation is based. Likewise, a plurality of operating variables which are measured with a plurality of sensors, the evaluation can be based. In order to make the following description easier to understand, only the singular form of the sensor and the operating variable will be used in the following.
• the evaluation unit is also set up to output a signal about the need for maintenance via a signal transmission device if the result of the evaluation of the operating variable indicates the need for maintenance.
• the signal transmission device is used in the sense of the present invention to output a signal on the need for maintenance and / or Repa ⁇ temperature.
• the signal transmitter Mitt ⁇ averaging means comprise an optical and / or acoustic input device for the transmission of the signal.
• the signal transmitter Mitt ⁇ averaging means comprise an optical and / or acoustic input device for the transmission of the signal.
• the signal transmission device can also be a wireless and / or or a wired interface for transmitting the signal as a data signal.
• Such an interface has the advantage that the drive unit according to the invention with data-processing devices to communicate technical input, in particular, a higher-level control of a technical system to process the data signals given from ⁇ . Compared to the prior art, this results in the significant advantage that no complex evaluation of the signal is more necessary with regard to the question of the maintenance requirement, since this already contains the information about the existing maintenance requirement.
• this means example ⁇ as the need for the integration of the drive unit of the invention in an industrial plant with a higher-level controller, they "know" virtually no information about the technical configuration of the drive unit to the signal transmitted to the drive means the information on the Rather, only minimal information about the type of signal or, in other words, the "language” of the signal is needed to enable a higher level controller to process the signal. If, as is customary with complex technical systems, the higher-level controller and the drive unit are delivered ⁇ supplies by different companies, it requires minimal effort to ensure compatibility between the higher-level controller and the drive unit with respect to the signaling maintenance requirements.
• the interface also allows the communication of a plurality of electric drive units with each other.
• This can examples are used to play to divert the signal of an electric drive unit to another drive ⁇ unit and outputting this.
• the output of the signal can be done for example by the display on a display.
• a plurality, possibly different, drive units can be networked with each other and monitored with regard to their maintenance and / or repair requirements, without requiring a higher-level control for this purpose.
• the monitoring can take place from one of the drive units.
• the evaluation unit and / or the sensor advantageously both, and / or the other components such as the signal transmission means, the operating time measuring device, the interface, optical and / or acoustic ⁇ zier devices for transmitting the signal , the speed and / or direction sensor, the signal input for receiving further data and / or signals, the temperature sensor, and / or the display provided in an adapter.
• the adapter is used for connecting the electric motor to the technical system, in particular with a transmission, and has for this purpose preferably a motor shaft extension on ⁇ . Furthermore, the adapter has teilhaft wash a separate housing.
• the housing of the adapter to a flange for locking ⁇ bind the adapter with the electric motor and / or a flange for connecting the adapter to the driven by the electric motor technical means.
• This technical device may preferably be a transmission.
• Such an adapter makes it possible, on the one hand, to retrofit existing technical systems by equipping the electric motors there with the adapters according to the invention and thus to become electric drive units in the sense of the present invention.
• almost any electric motors with the advantage ⁇ liable adapters can be combined in inventive electric drive units also in the design of new plants.
• the transmitter can be set up, in particular programmed, with regard to the requirements of the respective electric motor.
• ⁇ drive unit As a modular system.
• a drive unit and a plurality of evaluation units are provided.
• the evaluation unit now has an evaluation device recording. From this plurality of available evaluation units, an evaluation unit can be selected and recorded by the evaluation device. In this way - depending on the requirements of a specific propulsion unit will be provided - different Ausenseein ⁇ units are received with different functionalities in the power unit and combined with the latter. This makes it possible to provide a comparatively small number of components, a high number of different ⁇ Licher inventive drive units for different purposes. It is understood that such a modular system can also have a plurality of different drive units, which can be combined with the different evaluation units.
• the drive unit has an operating time measuring device for detecting the operating times of the electric drive unit. These are preferably evaluated by an operating time evaluation unit, which in turn is advantageously part of the evaluation device. This allows the detection of the operating times, which are advantageously included as an output in the evaluation in terms of a possible maintenance requirements.
• the drive unit may have a rotational speed and / or direction of rotation sensor for measuring the rotational speed and / or the direction of rotation. A corresponding speed and / or Drehurgisausense may be advantageous ⁇ way legally also provided in particular as a component of the evaluation unit. In this way, the data can be collected on the exact operating conditions of the electric drive unit, whereby they are based on the evaluation with regard to a maintenance requirement. be placed and / or included in this evaluation.
• the drive unit in particular the evaluation unit, has a signal input for receiving further data and / or signals.
• the evaluation device is preferably designed to evaluate these further data and / or signals also with regard to the need for maintenance and / or repair.
• Such a signal input can for example serve the slip of a belt conveyor - to recognize - as with ⁇ play as a baggage belt.
• output data such as trigger signals, can also be processed by external current meters. This makes it possible that measured variables are included in the evaluation, which can not be measured directly on or in the electric drive unit.
• the evaluation unit is turned to ⁇ directed to evaluate the measured operating variables and / or the further data relating to the mechanical and / or electrical load of the electric drive unit. This makes it possible in particular for a wear parameter to be calculated. This can then be used as a function of the respective operating times at a certain load as the output of the evaluation in terms of the need for maintenance.
• Such an evaluation allows example ⁇ as to weight uptime with a high load more than uptime at a low load, and thus a more accurate measure of the Wear resulting from the different loads to obtain.
• the evaluation unit is set up to carry out the evaluation of the measured operating variables and / or of the further data and / or signals also with regard to the necessity of future maintenance becoming necessary.
• the advantage of being able to signal not only an actual need for maintenance but also a future maintenance requirement is that the operator of a technical installation with a drive unit according to the invention can prepare in the longer term for carrying out a maintenance, i. In other words, it will be warned in good time that maintenance will be necessary in the foreseeable future. This will enable them to minimize losses due to interruptions in service during maintenance by scheduling maintenance at a specific point in time.
• the drive unit has a temperature sensor.
• the evaluation unit can also calculate temperatures at other locations of the electric drive unit on the basis of the measured temperature data.
• a temperature evaluation unit which serves to evaluate the temperatures measured by the temperature sensor, can be part of the evaluation unit. In this way, thermal loads of the evaluation can also be used.
• means for measuring temperature and / or humidity of the environment of the electric drive unit may be present. This data can be used in particular in conjunction with an internal temperature sensor and using a thermal model of the electric drive unit to calculate the temperatures and thus the thermal loads at different points of the drive unit.
• a Vibra ⁇ tion sensors to be measured acting forces or the Mes ⁇ measurement and evaluation of the power demand of the drive unit.
• the results of the evaluation of the power requirement can advantageously also be included in the evaluation in order to make statements about a possible maintenance requirement.
• a sensor for measuring a property of the transmission oil of a transmission connected to the electric drive unit This may for example be a photocell, game wise to check with ⁇ to the turbidity of the transmission oil and / or impurities and / or metal in the engine oil can be seen.
• the evaluation device has a data storage device and is thus enabled to log the acquired data. Also in the memory interventions in the drive device, such as performed maintenance, are stored. The evaluation of this data can then be used to improve further evaluations with regard to their accuracy. Way to carry out the invention
• An electric ⁇ drive unit 1 comprises an electric motor 2 and advanta- adhesive enough, an adapter 3.
• the adapter 3 contains in the example shown sensor and evaluation and is connected in the illustrated example via the adapter with a gear 4.
• the adapter 3 shown by way of example is designed so that it can use the voltage supply of the motor. A separate external power supply for the adapter is not necessary in this example. Alternatively, however, it may be provided.
• the exemplary adapter 3 shown captures speed and temperature values. These are evaluated by the evaluation unit provided in the adapter 3. A Sig ⁇ nalübats adopted a signal about the need for maintenance and / or repair is issued. This is done in the example shown in an advantageous manner via a visual status display. In the example shown, the status display is preferably provided on or in the smart adapter 3.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Automation & Control Theory (AREA)
• Quality & Reliability (AREA)
• Control Of Electric Motors In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=61094485

Family Applications (1)

Country Status (5)

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Family Cites Families (18)

• 2017
  • 2017-01-28 DE DE102017000821.3A patent/DE102017000821A1/de active Pending
• 2018
  • 2018-01-25 EP EP18702202.5A patent/EP3574479A1/de active Pending
  • 2018-01-25 WO PCT/EP2018/051828 patent/WO2018138198A1/de unknown
  • 2018-01-25 US US16/470,623 patent/US11486793B2/en active Active
  • 2018-01-25 CN CN201880005005.XA patent/CN110073419B/zh active Active

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