摘要:
By employing High Density Interconnect (HDI) multi-chip modules (MCMs) having elements of a distributed power supply embedded in the MCM itself, the functions of an MCM and a power converter are combined. The embedded power supply elements include DC-DC or AC-DC converters to convert an input voltage and input current to a relatively lower output voltage and relatively higher output current, thereby decreasing the current requirements of external power supply lines connected to the multi-chip module. The current and voltage outputs may be connected to chip power inputs through relatively short, low-impedance power distribution conductors comprising copper strips direct bonded to a ceramic substrate; alternatively, or in combination with direct bonded copper conductors, the low-impedance power distribution conductors may be situated within an HDI overcoat structure. The power supply elements may be placed within cavities formed in the substrate, or on a thinner portion of the substrate. The power supply may also provide multiple output voltages.
摘要:
A method for optimally operating a computer numerical control (CNC) milling machine to form cavities in a ceramic substrate for receiving IC chips and other components of a high density interconnect structure electrically interconnected by a multi-layer interconnect (HDI) structure. Generation of the CNC program instructions is based on locations and dimensions of the components which, through a set of design rules, provide locations and dimensions for an initial set of cavities corresponding to the components on a one-for-one basis. Depending upon the particular arrangement of the components, specific neighboring cavities of the initial set may either overlap or be separated by walls. A representation of the location and dimensions of each of the cavities of the initial set is formed, and the representation is enhanced by a "combine pockets" step and by a "remove borders" step to represent locations and dimensions of cavities of an optimized set. CNC program instructions for the milling machine are then generated for forming the cavities of the optimized set.
摘要:
Systems and methods for communicating through a rail are provided. In one embodiment, a method for communicating through a rail is provided. The method includes sending an acoustic signal through the rail of a designated section of track. The acoustic signal includes control commands to remotely control operation of a rail vehicle on the designated section of track.
摘要:
Systems and methods are described for monitoring different conditions that are simultaneously or concurrently experienced by different vehicles in the same consist and using the monitored conditions to locally change operations of one or more of the vehicles. In accordance with one embodiment, operations data related to one or more vehicles of the consist is acquired from one or more of plural different locations in the consist. The operations data and location data related to where the operations data is acquired are communicated to a first vehicle of the consist. Command data is formed based on the operations data and the location data. The command data directs at least one of the vehicles in the consist to change one or more operations of the at least one of the vehicles. The command data is transmitted to one or more of the vehicles of the consist.
摘要:
Systems and methods for controlling rail vehicle data communication are provided. In one embodiment, a multiple-unit rail vehicle system includes a first rail vehicle including a first wireless network device to detect a wireless network. The wireless network is provided by a wayside device. The rail vehicle further comprises a first communication management system to send, through the wireless network, a data communication to a second rail vehicle of the multiple-unit rail vehicle system.
摘要:
Methods and systems are provided for controlling a power transfer rate in to and/or out of a vehicle energy storage device to affect a current state of charge of the energy storage device. The vehicle may be on a mission comprising a plurality of future power transfer opportunities. In one example, the method comprises adjusting the power transfer rate based on an estimated duration of a future power transfer opportunity. Further, the method may include, if the estimated duration of the future power transfer opportunity is different from a predetermined threshold, changing the power transfer rate at the future power transfer opportunity. The method allows the operating life of the energy storage device to be extended.
摘要:
Disclosed is a method and system for creating a relief or sculpture from an object. More specifically the present invention relates to methods for creating a relief or sculpture from a human model utilizing software to reconstruct a 3D data set from 2D images of the human model and shaping the relief or sculpture using computer numerical controlled milling machines.
摘要:
A method of scheduling network resources in a first domain by transforming the problem to a second domain, solving the problem and transforming back to the first domain.
摘要:
A method for communicating on a train that has at least two locomotives, the method including determining when a primary communication path ceases to be available for a specific subsystem of the train, identifying at least one auxiliary communication path to transmit information for the specific subsystem, configuring a message for the specific subsystem which complies with a message format of the at least one auxiliary communication path, and transmitting the message on the at least one auxiliary communication path. A system and a computer software code are further disclosed for providing a communication system for a powered system.
摘要:
A switched capacitor narrow band pass filter includes a first switch including a first pole movable between two first switch terminals, a second switch including a second pole moveable between second switch terminals, and a third switch including additional poles movable between third switch terminals. The filter further includes an effective capacitor coupled to the first pole and a plurality of matchinq capacitors coupled respectively to the second and third switch terminals. The additional poles are coupled to the third switch terminals according to a first predetermined sequence and to the third switch terminals at a predetermined frequency. A differential amplifier assembly includes two positive and two negative terminals coupled to the additional poles in a second predetermined sequence wherein two of the additional poles are coupled to the positive terminals and two others of the additional poles are coupled to the negative terminals for signal summation.