Abstract:
A tire parameter sensing system (10) for a vehicle (12) includes a vehicle-based unit (54) for transmitting first signals and for receiving second signals. A tire-based unit (34) is associated with a tire (16) of the vehicle (12). The tire-based unit (34) is responsive to received first signals for sensing a parameter of the tire (16) and for transmitting second signals indicative of the sensed parameter. An antenna portion (144) of the tire-based unit (34) has an impedance that varies in response to varying environmental conditions. The vehicle-based unit (54) including a tuner (106) and a controller (90). The controller (90) monitors a condition of received second signals at various settings of the tuner (106) and thereafter, sets the tuner (106) for maximizing the condition of the received second signals.
Abstract:
An antenna (96) for use in inductive coupling two devices (34 and 42) includes a first coil (180) having a first inductance value, a second coil (190) having a second inductance value, and a capacitor (198) having a capacitance value. The first and second coils (180 and 190) and the capacitor (198) form a tank circuit (196) having a predetermined resonant frequency. The capacitance value of the capacitor (198) varies inversely to an equivalent inductance value of the tank circuit (196) for providing the predetermined resonant frequency. The first and second coils (180 and 190) are connected in parallel with one another so that the equivalent inductance value of the tank circuit (196) is less than each of the first and second inductance values and the capacitance value of the capacitor (198) is maintained above a predetermined threshold value for providing stability to the tank circuit (196).
Abstract:
A system and method of offline annotation of future access are disclosed. According to one embodiment, a request is received at a storage system to read a portion of a file stored in the storage system. In response to the request, chunks of the file are cached in a cache memory of the storage system. In response to a request for cache space reclamation, the system then determines future request to the file based in part on a next access auxiliary table (NAAT) associated with the file, which was created prior to receiving the request to read and stored in a persistent storage location of the storage system. Based on the determination, the system evicts from the cache memory at least one chunk of a read unit (RU) whose next access is a furthest among the cached chunks.
Abstract:
A tire parameter sensing system (12) for sensing a parameter of a tire (16) includes a power transmitting antenna (44) that is actuatable for producing a magnetic field at a location of the tire (16). A rim (140) upon which the tire (16) is mounted includes first and second magnetically conductive surface portions (160 and 168) that form a drop well (156). A tire-based unit (34) is mounted in the drop well (156) so that a coil antenna (96) of the tire-based unit (34) is located adjacent to both the first and second magnetically conductive surface portions (160 and 168). The central axis of the coil antenna (96) extends in a direction parallel to the first magnetically conductive surface portion (160) and the first and second magnetically conductive surface portions (160 and 168) guide magnetic flux of the magnetic field to the coil antenna (96).
Abstract:
Methods and apparatus for controlling the temperature of a substrate during processing are provided herein. In some embodiments, an apparatus for retaining and controlling substrate temperature may include a puck of dielectric material; an electrode disposed in the puck proximate a surface of the puck upon which a substrate is to be retained; and a plurality of heater elements disposed in the puck and arranged in concentric rings to provide independent temperature control zones.
Abstract:
Embodiments of the present invention provide chamber components having a protective element for shielding bonding material from processing environments in a processing environment. The protective element may include protective seals, protective structures, erosion resistive fillers, or combinations thereof. Embodiments of the present invention reduce erosion of bonding material used in a processing chamber, thus, improving processing quality and reducing maintenance costs.
Abstract:
The invention provides a vehicle wheel arch (18) of the type including an antenna (20) for interacting with a device (22) carried by an assembly (12) of a wheel (14) and a tire (16) . The wheel arch includes a shield (24) overlying the antenna (20) beside the radially-inner face of the wheel arch (18), said shield (24) being suitable for retaining matter (26) at a certain distance from the antenna (20).