Abstract:
A system and method for controlling an AC motor drive includes a control system programmed with an energy algorithm configured to optimize operation of the motor drive. Specifically, the control system input an initial voltage-frequency command to the AC motor drive based on an initial voltage/frequency (V/Hz) curve, receives a real-time output of the AC motor drive generated according to the initial voltage-frequency command, and feedback a plurality of modified voltage-frequency commands to the AC motor drive, each of the plurality of modified voltage-frequency commands comprising a deviation from the initial V/Hz curve. The control system also determines a real-time value of the motor parameter corresponding to each of the plurality of modified voltage-frequency commands, and feeds back a modified voltage-frequency command to the AC motor drive so that the real-time value of the motor parameter is within a motor parameter tolerance range.
Abstract:
A wireless communication network includes a network coordinator (NC) having plural channels and plural wireless transceivers, and plural nodes. Each node has status information, a number of channels and a number of wireless transceivers. Each node and the NC communicate in a Carrier Sense Multiple Access mode. Each node communicates the status information thereof to or toward the NC in a Time Division Multiple Access mode having plural time slots. The NC assigns the time slots and the channels to the nodes to provide a plurality of collision-free schedules therefor. The NC sends, for each node, a corresponding one of the collision-free schedules to or toward a corresponding one of the nodes. Each collision-free schedule includes a corresponding number of the time slots and a corresponding number of the channels that the corresponding one of the nodes employs to communicate the status information thereof to or toward the NC.
Abstract:
An exemplary liquid crystal panel includes a first substrate, a second substrate opposite to the first substrate, a light sensor disposed at an inner side of the first substrate, and a black matrix disposed at an inner side of the second substrate. The light sensor includes a light-sensing unit, and the black matrix includes a semi-transparent film corresponding to the light-sensing unit. A liquid crystal display device employing the liquid crystal panel is also provided.
Abstract:
An exemplary repairing method includes providing a substrate having a plurality of conducting lines; detecting a broken position of one of the conducting lines; switching on a nozzle; and forming a copper layer at the broken position on the substrate. The repairing method of the present invention employing a repairing device for performing a chemical vapor deposition (CVD) method to forming the copper layer at a position of the broken defect of one of the conducting lines.
Abstract:
An exemplary read only memory cell (200) includes a semiconductor layer (220), a gate stack (230), and a gate electrode (240). The gate stack includes a tunnel film (231), a charge storing layer (232), and a block layer (233) sequentially stacked adjacent to the semiconductor layer. The gate electrode is adjacent to the block layer. The charge storing layer is configured to store charges when data is written to the read only memory cell. The charge storing layer comprises at least two sub-layers having different molecular structures of material such that a plurality of interfacial traps is provided where the at least two sub-layers adjoin each other. A method for manufacturing the read only memory cell is also provided.
Abstract:
An exemplary light source device (10) includes a power supply (12), a light source (14), and a photodetector (16). The photodetector includes a light sensor (17) and a resistor (18) connected in parallel. The power supply, the light source, and the photodetector are connected in series. When the intensity of ambient light increases, a resistance of the light sensor decreases so as to increase a light intensity of the light source. When the intensity of ambient light decreases, the resistance of the light sensor increases so as to decrease the light intensity of the light source.
Abstract:
An exemplary method for fabricating a polysilicon layer includes the following steps. A substrate (10) is provided and an amorphous silicon layer (12) is formed over the substrate. An excimer laser generator (13) for generating a pulse excimer laser beams collectively having the shape of a generally rectangular shaft is provided to melt a first area (15) of the amorphous silicon layer with the pulse excimer laser beams. The excimer laser generator is moved a distance to melt a second area of the amorphous layer spaced a short distance away from the first area. At least a subsequent third melted area spaced a short distance away from the second melted area is formed, with each subsequent melted area is spaced as short distance away from the immediately preceding melted area.
Abstract:
A circuitry testing method, comprising: providing a circuit board needing testing; applying a potential(160) to the circuit board needing testing so that the circuit board works and operating elements of the circuit board needing testing emit infrared rays; testing an intensity of radiation of the infrared rays using an infrared sensor(110); converting the radiation intensity to RGB(red, green, blue) data signals in order to form a diagnostic infrared image, using a processor(130); providing a standard infrared image; comparing the diagnostic infrared image with the standard infrared image; and determining whether the circuit board is defective according to the comparison.
Abstract:
An exemplary dynamic random access memory includes a first transistor (210), a second transistor (220) and a comparator (230). The first transistor includes a first gate electrode (211), a first source electrode (213) and a first drain electrode (215). The second transistor includes a second gate electrode (221), a second source electrode (223) and a second drain electrode (225). The first source electrode is connected with the second source electrode. The first drain electrode is an input terminal for inputting a message. The comparator is connected to the second drain electrode, and preconfigured with a reference current. The comparator compares the reference current and a current through the second drain electrode to define a state of the current read from the comparator.
Abstract:
The invention involves a novel chemical compound, N-acetyl-5,6-dimethoxytryptamine (compound I), which can also be defined as a melatonin derivative. The molecular weight of compound I is 262 and the chemical structure is as follows. ##STR1## Compound I possesses potent in vitro and in vivo free radical scavenging capacity and exhibits protective effects against convulsions and brain damage induced by oxidative stress. It holds potential clinical usage for preventing and treating diseases which involve free radicals and oxidative stress.