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    • 2. 发明授权
    • Image forming apparatus having self-repair function and self-repair
method for the apparatus
    • 具有自修复功能的图像形成装置和装置的自修复方法
    • US5446523A
    • 1995-08-29
    • US132351
    • 1993-10-06
    • Yoshiki ShimomuraSadao TanigawaYasushi UmedaTetsuo TomiyamaHiroyuki Yoshikawa
    • Yoshiki ShimomuraSadao TanigawaYasushi UmedaTetsuo TomiyamaHiroyuki Yoshikawa
    • G06F9/44G03G15/00G03G21/00G06F11/22H04N1/00
    • G03G15/55G06F11/22G03G2215/00118G06F2201/815
    • In an image forming apparatus according to the present invention, a software portion incorporated in the apparatus is provided with a virtual case storage portion 12, to previously create virtual cases by a virtual case compiler 16 outside of the apparatus and store the virtual cases. Fault diagnosis is made by comparing fuzzy qualitative values into which the values of sensors are converted on the basis of fuzzy membership functions with the virtual cases. If a fault is diagnosed as a result of the comparison, repair operations for repairing the fault are read out from a work script table 15. In this case, operation information for repair are stored to correspond to each of a plurality of domains into which a state space which the apparatus can take up is divided. Accordingly, it is possible to correctly read out corresponding repair operations from the work script table 15 depending on which of the domains is a domain to which the present state of the apparatus belongs. As a result, a self-repair system can be constructed as a practical built-in type system, thereby to make it possible to reduce the scale of the system related to the fault diagnosis as well as to reduce time required for the fault repair.
    • 在根据本发明的图像形成装置中,包含在装置中的软件部分设置有虚拟盒存储部分12,以预先通过设备外的虚拟案例编辑器16创建虚拟案例并存储虚拟案例。 通过比较基于模糊隶属函数与虚拟案例将传感器值转换成的模糊定性值进行故障诊断。 如果作为比较的结果诊断故障,则从工作脚本表15读出用于修复故障的修复操作。在这种情况下,存储用于修复的操作信息以对应于多个域中的每一个,其中 设备可以占用的状态空间是分开的。 因此,根据哪个域是设备的当前状态所属的域,可以从工作脚本表15正确读出相应的修复操作。 因此,可以将自修复系统构建为实用的内置式系统,从而可以减少与故障诊断相关的系统的规模,并且减少故障修复所需的时间。
    • 3. 发明授权
    • Image forming apparatus provided with self-diagnosis system
    • 具有自诊断系统的图像形成装置
    • US5467355A
    • 1995-11-14
    • US299082
    • 1994-09-01
    • Yasushi UmedaYasuo MotegiTetsuo TomiyamaHiroyuki YoshikawaYoshiki Shimomura
    • Yasushi UmedaYasuo MotegiTetsuo TomiyamaHiroyuki YoshikawaYoshiki Shimomura
    • G03G15/00G06F11/25G06F11/00
    • G06F11/2257G03G15/55G03G2215/00118Y10S706/90Y10S706/911
    • In an image forming machine, an objective model storage device stores parameter data that represent elements of the machine and relationships among such parameters, and parameter membership functions, and fault diagnosis knowledge. A degradation storage device stores a fuzzy qualitative value for a parameter changed by degradation of an element of the machine. Preferably, degradation indicative data are converted into fuzzy qualitative values, and the value of the parameter changed by degradation is represented by a fuzzy qualitative value. The machine includes sensors for sensing functional states thereof, and providing state data representative of such states. The state data sensed by the sensors are converted into fuzzy qualitative values. Then, a fault judgement device determines whether or not a fault exists by comparing the obtained fuzzy qualitative values with the parameter data stored in the objective model storage device. If the fault judgement device determines that a fault exists, a fault diagnosis device performs fault diagnosis by utilizing, as an initial value, the value of the parameter changed by degradation. A specification device specifies fault causes by comparing the result of the diagnosis with the state data which was converted into the fuzzy qualitative values. Then, a repair device operates actuators of the machine to overcome the specified fault.
    • 在图像形成机中,目标模型存储装置存储表示机器的要素的参数数据和这些参数之间的关系以及参数隶属函数以及故障诊断知识。 降级存储装置存储由于机器元件的劣化而改变的参数的模糊定性值。 优选地,降解指示数据被转换为模糊定性值,并且由劣化改变的参数值由模糊定性值表示。 该机器包括用于感测其功能状态的传感器,以及提供表示这种状态的状态数据。 由传感器感测到的状态数据被转换为模糊定性值。 然后,故障判断装置通过将获得的模糊定性值与存储在目标模型存储装置中的参数数据进行比较来判定是否存在故障。 如果故障判断装置判断为存在故障,故障诊断装置利用劣化改变的参数值作为初始值来进行故障诊断。 规范设备通过将诊断结果与转换为模糊定性值的状态数据进行比较来指定故障原因。 然后,修理装置操作机器的执行器以克服指定的故障。
    • 8. 发明授权
    • Image forming apparatus capable of making self-diagnosis
    • 能够进行自我诊断的图像形成装置
    • US5317368A
    • 1994-05-31
    • US34398
    • 1993-03-19
    • Yoshiki ShimomuraSadao TanigawaYasushi UmedaTetsuo TomiyamaHiroyuki Yoshikawa
    • Yoshiki ShimomuraSadao TanigawaYasushi UmedaTetsuo TomiyamaHiroyuki Yoshikawa
    • B41J29/46G03G15/00G03G21/00G05B13/02G06F9/44G06F11/25
    • G06F11/2257G03G15/55Y10S706/904Y10S706/912
    • According to the present invention, a self-diagnosis system for an image forming apparatus can make accurate fault diagnosis and is made smaller in size and higher in speed. For that purpose, a fault temporarily developed by the image forming apparatus is limited to a single fault assumption, all states which can exist on the image forming apparatus when the image forming apparatus develops the fault are previously simulated, and the results of the qualitative simulation are stored as a plurality of virtual cases in a virtual case storing portion 12. When the image forming apparatus is operated, detected values of sensors X, Vs and Ds are converted into fuzzy qualitative values, respectively, on the basis of membership functions stored in a membership function generating portion 13. The fuzzy qualitative values are compared with the virtual cases stored in the virtual case storing portion 12, to reason the cause of the fault. Accordingly, any of the virtual cases stored in the virtual case storing portion 12 is selected using the fuzzy qualitative values, thereby to make it possible to accurately specify the fault in a short time.
    • 根据本发明,用于图像形成装置的自诊断系统可以进行准确的故障诊断,并使其尺寸更小并且速度更高。 为此,由图像形成装置临时显影的故障被限制为单个故障假设,预先模拟图像形成装置发生故障时可能存在于图像形成装置上的所有状态,并且定性模拟的结果 被存储在虚拟案例存储部分12中的多个虚拟案例中。当操作图像形成装置时,传感器X,Vs和Ds的检测值分别根据存储在 隶属函数产生部分13.将模糊定性值与存储在虚拟案例存储部分12中的虚拟案例进行比较,以说明故障的原因。 因此,使用模糊定性值来选择存储在虚拟案例存储部分12中的任何虚拟案例,从而可以在短时间内精确地指定故障。
    • 9. 发明授权
    • Apparatus having self-repairing function and method of self repairing
the same
    • 具有自修复功能的装置及其自身修复方法
    • US5613047A
    • 1997-03-18
    • US344812
    • 1994-10-11
    • Yoshiki ShimomuraSadao TanigawaYukihiro MoriYasushi UmedaTetsuo TomiyamaHiroyuki Yoshikawa
    • Yoshiki ShimomuraSadao TanigawaYukihiro MoriYasushi UmedaTetsuo TomiyamaHiroyuki Yoshikawa
    • G03G21/00G03G15/00G05B9/02G06F11/00G06F11/25G06K15/00
    • G06F11/2257G03G15/55
    • According to the present invention, a concept of functional quantities indicative of quantified functional degrees of such lower-level functions as "clearer characters", "cleaner background", and "thicker characters", which are subordinating to a qualification-oriented function of "more beautiful characters". Characteristic patterns of functional quantities F1, F2 and F3 of the lower-level functions for physical parameters (for example, the surface potential of a photoreceptor body) are prepared. When a fault repair is implemented by changing a value of a physical parameter, a tradeoff occurs between lower-level functions which are influenced by the physical parameter. That is, taking into account the functional quantities F1, F2 and F3 of the lower-level functions, the value of the physical parameter is set so that the functional quantity of the function of "more beautiful characters" is maximized. By introducing the concept of the functional quantities indicative of the quantified functional degrees of the functions, a flexible self-repairing function can be realized, thereby optimizing a repair operation.
    • 根据本发明,指示了诸如“更清晰的人物”,“更清洁的背景”和“较粗的人物”等低级功能的量化功能度的功能量的概念,这些功能度属于“ 更美丽的人物“。 准备用于物理参数(例如,感光体的表面电位)的较低级功能的功能量F1,F2和F3的特征图案。 当通过改变物理参数的值来实现故障修复时,会在受物理参数影响的较低级别的功能之间进行权衡。 也就是说,考虑到下层功能的功能量F1,F2和F3,物理参数的值被设置为使得“更美丽的人物”的功能的功能量最大化。 通过引入表示功能的量化功能度的功能量的概念,可以实现灵活的自修复功能,从而优化修复操作。