摘要:
Methods and apparatus to monitor conditioning machines are disclosed herein. An example system includes a plurality of work rolls to process a strip material. A first sensor detects a first distance between an upper surface of the strip material and a first reference location and a second sensor detects a second distance between an upper surface of the strip material and a second reference location. A controller determines a difference value between the first distance and the second distance to detect material curvature of the strip material.
摘要:
Methods and systems to drive rotary presses are described. In one described example, a rotary press system includes a first rotary press and a second rotary press adjacent to the first rotary press. The first and the second rotary presses are to receive a strip of material. A drive member is operatively coupled to the first and the second rotary presses and a motor coupled to the drive member rotates the drive member to cause the first and second rotary presses to process the strip material.
摘要:
The present invention is an improved LED lighting module. Preferably, the LED lighting module comprises a first LED base, a central LED base containing a printed circuit board, and a third LED base, where the first and third bases are connected by spacer tubes. Each LED base has an LED pc-board mounted thereon. A main power line runs through the set of three LED bases. A first series connector line connects the printed circuit board to the first LED board and a second series connector line connects the printed circuit board to the third LED board. A first connection line connects the first LED board to the central LED board and a second connection line connects the central LED board to the third LED board. These LED module sets can be connected consecutively to create strings of series wired sets from the same main power lines.
摘要:
Systems and apparatus are provided for power electronics substrates adapted for direct substrate cooling. A power electronics substrate comprises a first surface configured to have electrical circuitry disposed thereon, a second surface, and a plurality of physical features on the second surface. The physical features are configured to promote a turbulent boundary layer in a coolant impinged upon the second surface.
摘要:
A terminal assembly for a power converter is provided. The terminal assembly includes first and second conductive components and a current sensor. The first conductive component has first and second releasable attachment formations. The second conductive component has first and second portions with respective first and second widths. The first width is less than the second width. The first portion is releasably attached to the first conductive component with the second releasable attachment formation. The current sensor has an opening therethrough and is positioned between the first conductive component and the second portion of the second conductive component such that the first portion of the first conductive component extends through the opening. The current sensor is responsive to current flowing through the first portion of the second conductive component.
摘要:
A double ended inverter system suitable for use with an AC electric traction motor of a vehicle is provided. The double ended inverter system cooperates with a first DC energy source and a second DC energy source, which may have different nominal voltages. The double ended inverter system includes an impedance source inverter subsystem configured to drive the AC electric traction motor using the first energy source, and an inverter subsystem configured to drive the AC electric traction motor using the second energy source. The double ended inverter system also utilizes a controller coupled to the impedance source inverter subsystem and to the inverter subsystem. The controller is configured to control the impedance source inverter subsystem and the inverter subsystem in accordance with a boost operating mode, a traditional inverter operating mode, and a recharge operating mode of the double ended inverter system.
摘要:
Various embodiments of the invention provide solutions that can offer a consistent framework for tools that assist in the configuration, tuning, and/or troubleshooting of a database and/or an RDBMS. Merely by way of example, one set of embodiments provides a software framework for an advisor component of a database and/or RDBMS. In accordance with some embodiments, the framework might specify a common data model for such advisor components. The data model can include, merely by way of example, a set of one or more findings (which might, in some cases, describe the result of an analysis of a circumstance in the database, RDBMS, and/or a mid-tier application used with the database) and/or a set of one or more recommendations (which might provide suggestions for addressing the circumstance). In particular embodiments. In particular embodiments, the data model might include a set of on or more rationales, which can explain the recommendations. In some cases, the software framework might include a task associated with the advisor component and/or one or more interfaces, which can include, inter alia, user interfaces and/or APIs. Other sets of embodiments can provide methods, systems and/or software programs for implementing an advisor framework.
摘要:
A control system for a vehicle powered by a fuel cell includes a voltage conversion device that communicates with the fuel cell through a voltage bus and a propulsion system that is selectively powered by the fuel cell through the voltage bus and that selectively generates a ripple current in the voltage bus. The voltage conversion device is regulated to selectively generate a counter-ripple current that reduces the ripple current.
摘要:
An inverter assembly includes a housing and a substrate disposed in the housing. The substrate includes at least a first conductive layer patterned to include an alternating current (AC) path and a direct current (DC) path. A plurality of inverter switches is mounted on the substrate and electrically coupled to the AC path and the DC path.
摘要:
Methods and apparatus for controlling flare in roll-forming processes are disclosed. An example system includes a component position detector configured to detect a component. The example system also includes a comparator configured to compare a flare tolerance value and a flare measurement value of the component and a storage interface configured to retrieve a roller position value from a memory based on the comparison. In addition, the example system includes a flange roller adjuster communicatively coupled to the storage interface and the component position detector and configured to obtain the roller position value from the storage interface and change a position of a roller based on the roller position value to condition the component.