75 results about "Degraded mode" patented technology

An apparatus, system, and method are disclosed for rebuilding only changed stripes of an offline member disk in a RAID array that is configured with redundancy and no hot standby disk. A work-in-progress (“WIP”) map tracks the changed stripes of the offline member disk prior to a reactivation and records the completion of the differential rebuilding (“DR”) process on the stripes. The DR process shortens the duration of a degraded mode of operation entered into by a logical drive formed when the RAID array experiences a member disk failure that results in one member disk being designated as offline.

A system for assessing the health of a mechanism includes a processor for receiving observation data from at least one sensor, the processor including: a detector receptive to the observation data and capable of identifying whether the mechanism is operating in a normal or degraded mode; a diagnoser to identify a type of fault from at least one symptom pattern; and a prognoser capable of calculating a remaining useful life (RUL) of the mechanism, wherein the prognoser includes a population prognoser for calculating the RUL based on a duration of use of the mechanism, a cause prognoser for calculating the RUL based on causal data, and an effect prognoser for calculating the RUL based on effect data generated from the fault. A method and computer program product for assessing the health of a downhole tool is also disclosed.

A system and a method that isolates and bypasses a failed fuel cell stack that is one of a plurality of connected fuel cell stacks within a fuel cell. By isolating and / or bypassing a failed fuel cell stack the fuel can continue to generate power in a degraded mode of operation. The switching required for isolation and / or bypassing can be performed by switches that are manually, electrically, electromagnetically, or hydraulically actuated.

The present invention is a Control System Architecture (CSA) for a multi-component armament system. The CSA provides dynamic reconfiguration of multiple nodes (e.g. a component, a subsystem, or a virtual simulation) in a Simulation-Emulation-Stimulation (SES) environment utilizing redundant client-server bus configuration of the nodes in a hierarchical model. The CSA provides for ease of configuration of nodes for any specific application, automated system reconfiguration capabilities to detect and bypass failed nodes or re-group available remaining nodes in the event of degraded mode operation, and expansion and / or downsizing of nodes without requiring a modification to the overall system architecture.

A data storage control unit is coupled to one or more host devices and to one or more physical storage units, the physical storage units collectives configured as a plurality of logical storage ranks. The storage control unit receives and processes write requests from the host devices and directs that data updates be stored in a temporary storage. The data updates are subsequently destaged to the logical ranks. Write requests are processed at a predetermined rate relative to the rate at which destages are performed (destage mode or rate). The storage control unit evaluates workload conditions of the temporary storage and modifies the destage mode if the temporary storage is in danger of becoming backlogged or if an actual backlog is created, thereby applying a “throttle” to the host write requests. Thus, method, apparatus and program product are provided to dynamically modify a level of throttling whereby through-put of a host device is substantially maintained.

The invention discloses an on-off output channel redundancy fault-tolerant control method which is applied to three redundancy on-off output channels of a digital electro-hydraulic control system (DEH) module. The method comprises the steps of enabling input ends of the on-off output channels to receive control signals sent by a field programmable gate array (FPGA), processing the control signals to obtain output signals, and enabling the output signals to be in parallel connection with redundancies respectively through diodes; enabling the on-off output channels to judge whether faults occur inside or outside the on-off output channels in a self-checking read-back mode; presetting a degradation mode, and outputting output quantity according to the degradation mode when the faults occur. According to the method, through three independent redundancy on-off output channels, the degradation mode is set, the faults inside or outside the channels are effectively judged through the self-checking read-back mechanism, and stability in the running process is guaranteed. The invention further discloses the redundancy on-off output channels, and fault-tolerant capability of a whole system is greatly improved.

The invention provides data processing method and device for a disk array. The method comprises the following steps of: orderly reading each set of strip data in each non-fault disk into a first solid hard disk of which the preset storage capacity is at least two sets of strip data; while reading the strip data to the first solid hard disk, orderly reconstructing the read strip data in each set in the first solid hard disk, and writing the data acquired by reconstruction into a hot spare disk; and when the strip data in the first solid hard disk reaches a preset storage capacity, orderly reading the strip data in each set in each non-fault disk into the first solid hard disk to cover the reconstructed strip data in the first solid hard disk. By introducing multiple sets of strip data into the RAID5 disk array, when the disk array is in the degrading mode, the SSD hard disk is used as a cache for prefetching the data in the non-fault disk, thereby enhancing the reconstruction speed of the disk array and reducing the risk of second disk failure in the degrading mode.

An apparatus, system, and method are disclosed for rebuilding only changed stripes of an offline member disk in a RAID array that is configured with redundancy and no hot standby disk. A work-in-progress (“WIP”) map tracks the changed stripes of the offline member disk prior to a reactivation and records the completion of the differential rebuilding (“DR”) process on the stripes. The DR process shortens the duration of a degraded mode of operation entered into by a logical drive formed when the RAID array experiences a member disk failure that results in one member disk being designated as offline.

A mass data storage system including a data storage device comprising block groups each comprising a plurality of data blocks determines when one of the block groups is faulty and the data storage device continues to operate as a partially failed data storage device with respect to the remaining block groups which are not faulty. A striped parity data storage device array comprises data storage devices capable of operating as partially failed data storage devices allows copying of data from the block groups not associated with determined to be faulty of a partially failed data storage device to a spare data storage device which reduces the amount of data that must be rebuilt in the rebuild process, thereby reducing the amount of time the array spends in degraded mode exposed to a total loss of data caused by a subsequent data storage device failure.

A system for automatic lane failover includes a first device coupled to a second device via a serial communication link having a plurality of a communication lanes. The devices may communicate by operating the link in a normal mode and a degraded mode. During normal mode operation, the devices may send frames of information to each other via the serial communication link. Each frame of information may include a number of data bits and a number of error protection bits. In response to either device detecting a failure of one or more of the communication lanes, the first device may cause the serial communication link to operate in a degraded mode by removing the one or more failed communication lanes. In addition, each device may reformat and send the frame of information on the remaining communication lanes with fewer data bits and the same number of error protection bits.

A mass data storage system including a hard disk drive comprising heads and platter surfaces determines when a head of the disk is faulty and the disk continues to operate as a partially failed disk with respect to the remaining heads which are not faulty. A striped parity disk array comprises disks capable of operating as partially failed disks allows copying of data from the platter surfaces not associated with a faulty head of a partially failed disk to a spare disk which reduces the amount of data that must be rebuilt in the rebuild process, thereby reducing the amount of time the array spends in degraded mode exposed to a total loss of data caused by a subsequent disk failure.

A system for assessing the health of a mechanism includes a processor for receiving observation data from at least one sensor, the processor including: a detector receptive to the observation data and capable of identifying whether the mechanism is operating in a normal or degraded mode; a diagnoser to identify a type of fault from at least one symptom pattern; and a prognoser capable of calculating a remaining useful life (RUL) of the mechanism, wherein the prognoser includes a population prognoser for calculating the RUL based on a duration of use of the mechanism, a cause prognoser for calculating the RUL based on causal data, and an effect prognoser for calculating the RUL based on effect data generated from the fault. A method and computer program product for assessing the health of a downhole tool is also disclosed.

Embodiments of the invention relate to handling failures in a cluster of computer resources. The resources are represented as nodes in a dependency graph in which some nodes are articulation points and the removal of any articulation point due to a resource failure results in a disconnected graph. The embodiments perform a failover when a resource corresponding to an articulation point fails. The failover is to a local resource if the failed resource does not affect all local resources. The failover is to a remote resource if no local resource can meet all resource requirements of the failed resource, and to a remote resource running in a degraded mode if the remote resource cannot meet all of the requirements.

A data storage control unit is coupled to one or more host devices and to one or more physical storage units, the physical storage units collectives configured as a plurality of logical storage ranks. The storage control unit receives and processes write requests from the host devices and directs that data updates be stored in a temporary storage. The data updates are subsequently destaged to the logical ranks. Write requests are processed at a predetermined rate relative to the rate at which destages are performed (destage mode or rate). The storage control unit evaluates workload conditions of the temporary storage and modifies the destage mode if the temporary storage is in danger of becoming backlogged or if an actual backlog is created, thereby applying a “throttle” to the host write requests. Thus, method, apparatus and program product are provided to dynamically modify a level of throttling whereby through-put of a host device is substantially maintained.

A system for steering a vehicle whereof steering of all the steerable wheels is controlled by an actuator specific thereto, the system having a controller which has at least a normal mode of operation in which, for each steerable wheel, the controller determines a set point for the normal steering angle and a degraded mode activated in the event of failure of a wheel actuator, in which the controller determines a compensating steering set point for a wheel.

A method and a system for managing the introduction of a new non-backward compatible version of an application server into a client / server networking, the method includes first distributing to a client system to be served by the new non-backward compatible version of the application server a client application operable in a mode compatible with the current version of the application server and in a mode compatible with the new non-backward compatible version. Upon installation in the client system the client application is set into a downgraded mode compatible with the current version of the application server. While the current version of the application server is still in production, the client application is kept operated in the downgraded mode. Upon introduction of the new non-backward compatible version of the application server, the client application is set into a valid mode compatible with the new version of the application server. From that point on, the client application is operated in the valid mode.

A Redundant Array of Independent Disks (RAID) level migration method for performing an online RAID level migration and adding a disk to a destination RAID is provided. First, the required information for migration is specified, and then a degraded mode is used to establish the destination RAID, and file system is built on the destination RAID. The file system of the source disk device is configured to be read-only, and all data of the source disk device are duplicated to the destination RAID. After completing file duplication, the destination RAID replaces the source disk device. The operation of the source disk device is stopped and the source disk device is added to the destination RAID. As a result, the RAID migration is accomplished. In addition, an associated RAID level migration system is further provided.

An information handling system having a power supply with automatic adjustment of over current protection for both normal and degraded modes of standby operation. A first over current protection shutdown value is used when the power supply cooling fan is operational and a second over current protection shutdown value is used when the power supply cooling fan is not operational. A fan fault detector selects between the first and second over current protection shutdown values.

In the present invention, a coordinated hierarchy of timing mechanisms preferably cooperate to report errors at different operational levels of a complex of computing devices. Preferably, each timer is able to identify a failure condition at its own level of operation and transmit a time-out condition to a higher level device which may also be a timer. Upon generation of a time-out condition, a system component experiencing a fault condition preferably continues to operate in a degraded mode, informs devices attempting to communicate with the faulty component of a status of the fault condition, and preferably proceeds to identify and correct a failure which caused the time out condition. The timers may be implemented in hardware or software.

The present invention is to provide a method for reconstructing data in case of failure of two HDs of a RAID, wherein the RAID is a logical disk drive assembly including at least three HDs and a RAID controller and data is divided into block strips which are stored on data blocks of different HDs respectively, The method comprises the steps of reading super blocks of all of the HDs; comparing the number of the HDs and time being involved in a previous operation and stored in the super blocks with each other; reading common data involved in the previous degraded operation of the RAID; writing the read common data into the super blocks of all of the HDs; and recovering a configuration of the RAID to the degraded mode again.

A vehicle control system controls operation of motors of a vehicle and determines whether there is sufficient stored electric energy to power the vehicle through an unpowered segment of a route. The controller changes operation of the vehicle to ensure that the vehicle can travel completely through the unpowered segment by switching which energy storage device provides energy, changing vehicle speed, changing motor torque, changing which route is traveled on, selecting fewer motors to power the vehicle, requesting rendezvous with a recharging vehicle, running the energy storage devices in a degraded mode, initiating a motor to generate power to aid in propulsion and / or recharge the energy storage devices, selecting a different route, controlling the vehicle to draft or mechanically couple to another vehicle, and / or controlling the vehicle to gain momentum or to generate an overcharge.

A method of managing the degraded modes of a system for the automatic starting / stopping of a heat engine of a vehicle, whereby the system receives information supplied by measurement and detection sensors and by a bus for the communication of vehicle operating data. The method comprises the following steps consisting in verifying the presence and validity of the information supplied by the sensors and, in the event of a negative result, defining a first degraded mode in which any stopping phase of the automatic start / stop mode is forbidden until an end-of-restriction condition has been fulfilled, and, in the even of a positive result, testing the communication with the data communication bus and, in the event of a negative result, defining a second degraded mode in which the automatic start / stop mode is inhibited until an end-of-inhibition condition has been fulfilled.

The present invention is to provide a method for reconstructing data in case of failure of two HDs of a RAID, wherein the RAID is a logical disk drive assembly including at least three HDs and a RAID controller and data is divided into block strips which are stored on data blocks of different HDs respectively, The method comprises the steps of reading super blocks of all of the HDs; comparing the number of the HDs and time being involved in a previous operation and stored in the super blocks with each other; reading common data involved in the previous degraded operation of the RAID; writing the read common data into the super blocks of all of the HDs; and recovering a configuration of the RAID to the degraded mode again.

The invention relates to an assymetrical electronic control system (100) for a gas turbine (50), which is designed to control a set of functions associated with logic input data (60) or data from sensors and associated with output data (70), in particular for an actuator, said system (100) commprising: a primary electronic control unit (120) configured to process the entire set of functions; a secondary electronic control unit (140), partially redundant with the primary unit (120) and configured to process only a strict subset of sufficient functions to operate or start the gas turbine in an acceptable degraded mode when the primary unit (120) is faulty; and a redundant or main chain selection and switching module (160) for selecting one or other of the primary and secondary units (120, 140) in order to control the gas turbine (50) according to the operating state of the primary unit (120).

The invention relates to a HDR pixel comprising a photo-sensitive element; a detector node connected to the photo-sensitive element; a reset switch connected to the detector node for resetting the detector node to a predetermined voltage; a buffer amplifier having an input connected to the detector node; a selecting transistor operable to select said pixel during a read out process; an intrinsic parasitic capacitance originated from at least one of the photo-sensitive element, the detector node, the reset switch, the buffer amplifier, the selecting transistor and operable to store the minority carriers generated by the photo-sensitive element; characterized in that the pixel further comprises a dual-mode capacitance having an input connected to the detector node and being operable in storing and destoring modes, for storing the generated minority carriers while being in the storing mode and destoring the minority carriers into the parasitic capacitance, while being in the destoring mode.

A control and power module for a rotating electrical machine comprising a power circuit containing a number of branches, and a control circuit designed for controlling the power circuit when the machine operates in a nominal mode. The inventive module is characterized in that the control circuit is also designed for monitoring an output voltage from the power circuit and blocking at least one branch of the power circuit in a conduction state when the output voltage reaches an at least first threshold value so that the machine functions in a degraded mode. The invention is for use in an alternator starter.

A method and apparatus is provided for operating a processing tool in a degraded mode upon detecting a fault and in accordance with one or more business rules. The method comprises detecting a fault associated with a processing tool capable of processing one or more workpieces and operating the processing tool in a degraded mode in response to detecting the fault.

The invention relates to a method for setting temporary speed restriction for a train in a degraded mode. The method includes the following steps that an interlock system acquires temporary speed restriction information of an ATS; the interlock system acquires temporary speed restriction information in an interlock upper computer; the temporary speed restriction information in the interlock system is processed; the interlock system transmits the temporary speed restriction information to an encoder to be encoded; the encoded temporary speed restriction information is transmitted to a trackside speed restriction beacon by the encoder; a beacon antenna of the train acquires front speed restriction information when passing through the speed restriction beacon, and the speed of the train can be adjusted according to the front speed restriction condition; whether the temporary speed restriction information transmitted by a DCS is received or not is judged by the train, if yes, the train shields the temporary speed restriction information from the speed restriction beacon, and the temporary speed restriction information transmitted by the DCS is used as the reference; if not, the temporary speed restriction information from the speed restriction beacon is used by the train. Compared with the prior art, the method for setting temporary speed restriction for the train in the degraded mode has the advantages of improving traffic safety, efficiency and the like.

Steering control system for a land vehicle with at least four steered wheels (1AvG, 1AvD, 1ArG, 1ArD), the system comprising one actuator per steered wheel (3AvG, 3AvD, 3ArG, 3ArD). The system comprises a control member (2) available to a driver and delivering a demanded steering angle (θ), a steering control unit (4) which, by way of input variable, uses at least the said demanded steering angel (θ) to determine a steering control angle for operating the said actuator, and means (5) for detecting a lock-up of one of the steered-wheel actuators, which are capable of delivering an alarm signal identifying an actuator that has locked up. The steering control unit has at least one normal mode and at least one degraded mode in the event of an actuator becoming locked up, the degraded mode calculating the steering control angle (αpi) of the non-locked wheels by imposing a first degraded-mode strategy whereby the instantaneous center of rotation (CIR) of the vehicle lies more or less on the straight line perpendicular to the plane of the locked wheel and passing through the center of the ground-contact area of the locked wheel, in a position that is dependent on the demanded steering angle (θ).

A multi-functional printing system having a plurality of platforms, where each of the platforms is adapted to perform a selected service. The printing system includes a first platform having a first queue, such as a queue utility for storing a job associated with the first platform, and a second queue, such as a shadow queue, for storing a job associated with a different platform. The system also employs a second platform disposed in communication with the first platform. The second platform has a first queue for storing a job associated with the second platform and a second queue for storing a job associated with a different platform.