Xerox Corporation

Stephen C O'Leyar

Robert P Siegel

Kevin Michael Carolan

Salvatore A Abbata

Bradley P Gerner

What is disclosed is a novel system and method for determining real-time performance in a sub-assembly device that is driven by a dc motor. In one example embodiment, an electric motor is energized such that a sub-assembly driven by the motor achieves a target operating speed. Pulse width modulation data is captured and plotted along a time axis. A time duration when the sub-assembly device ended a startup operation and achieved a steady state operation is determined. A portion of the plotted data is then compared to an ideal plot defined for that sub-assembly device. Based on the result of that comparison, a determination is made whether the sub-assembly device is performing within accepted operational parameters. A maintenance operation is signaled to be performed in response to the determined sub-assembly operational performance. The data is stored in a historical database from which a preventative maintenance schedule can be derived.

Determining real-time performance of a sub-assembly driven by a DC motor

During the operation of an electronic system, such as a document processing system, machine and job data of the electronic system are collected by a diagnostic system for automated diagnosis or prognosis. Optionally, machine data and population based data are acquired from a database or server. According to one embodiment, the data is analyzed to determine an initial diagnosis of the electronic system. Based on the initial diagnosis, a determination is made whether a remote transmission is needed. If so, the data is sent via a distributed network to a remote diagnostic system for analysis. At least part of the collected machine data may be a signature waveform of a part of the electronic system. In such a case, at least the analysis by the remote diagnostic system includes signature analysis of the waveform. Based on the analysis of the data by the remote diagnostic system, a communication is sent. The communication may be one or more of a repair information sent to a customer, a parts request sent to an appropriate entity, a service request notification to a customer service engineer and a revised set of operating instructions sent to the electronic system. The communication may be sent via the distributed network. If the communication is a revised set of operating instructions sent to the electronic system, the diagnostic system preferably verifies that the electronic system using the revised set of operating instructions is within specification.

Systems and methods for diagnosing electronic systems

An intelligent assembly system for a manufacturing process using one or more sensors that provide information for controlling, monitoring and/or evaluating the process. One or more sensors may be mounted on a module assembly and/or on a powered tool device. The one or more sensors may sense a vibratory signature and/or electrical current during the process and supply information, such as a data signal, to a software program or other processor for processing. For example, using a database of stored data regarding vibratory signatures and/or electrical currents for one or more power tool devices used in the manufacturing process, the information may be compared and analyzed to determine if it is within a specified range. Results of such analysis may be transmitted to an operator and/or graphically displayed. The results and/or display may instruct the operator to continue with the manufacturing process or inspect the process step just completed for possible error.

Intelligent assembly systems and methods

A method and apparatus for diagnosing whether a solenoid in an image forming system is functioning properly is disclosed. An actuating current is sent to a particular solenoid while a current waveform and elapsed time such as pull-in time value are noted for instances when the solenoid is in a first position and a second position. The first position can be one in which a solenoid plunger is extended and the second position can be one in which the solenoid plunger is retracted, or vice versa. Based at least partially on the measured actuating current values prior to the beginning and after the ending of solenoid movement, and measured time values, a determination can be made as to whether the solenoid is functioning properly by comparing these values to predetermined values for a properly functioning solenoid.

Growing community of inventors

Fairport, NY, United States of America

Stephen C O'Leyar