摘要:
The present invention connects two independent plastic optical fiber channels simultaneously, in which optic signals can be transmitted along two optic passes through a single mechanical rotational interface. The first channel of light path consists of a pair of plastic optic fibers with larger-core, co-axially fixed in 2 holders respectively. The light signal from one of the fiber can be directly coupled into another fiber. A number of smaller-core plastic optic fibers for second channel of light path are circumferentially arranged in the peripheral space of the first channel fibers. They are blind-spot free during rotation and are ideal for machine control applications such as SERCOS Interfaces. The rugged design permits underwater usage. Damaged fibers can be easily replaced without costly repairs of the device itself.
摘要:
Methods and related systems are described for making an electromagnetic induction survey of a formation surrounding a cased section of a borehole. An electromagnetic transmitter and/or receiver are deployed into the cased section of the borehole. One or more additional devices are used to measure the properties of a conductive casing relating to conductivity, thickness and magnetic permeability. A casing coefficient is then calculated that can then be used for the processing of the deep-sensing induction measurements.
摘要:
We disclose a method of depositing a metal seed layer on a wafer substrate comprising a plurality of recessed device features. The method comprises depositing a first portion of the metal seed layer on the wafer via plasma deposition at a sufficient ratio of wafer substrate bias to DC source power that bottom coverage is achieved while resputtering of surfaces of the recessed device features is inhibited. The method also comprises depositing a second portion of the metal seed layer at a ration of substrate RF bias to DC source power such that resputtering is not inhibited.
摘要:
A fiber optic rotary coupler is invented using both single mode and multi-mode optic fibers. This device has a rotatable optic fiber and a stationary optic fiber in an assembly to convey a light beam in the optic fibers. The assembly also includes a stationary fiber holder for fixing the tip of stationary optic fiber in a central hole and a rotatable fiber holder for fixing the body of the rotatable optic fiber with the tip of the rotatable fiber protruding out of the rotatable fiber holder. The two fiber holders can be rotated relatively each other so as to allow the tip of rotatable optic fiber to rotate in the central hole on the stationary fiber holder with the tips of the two optic fibers adjacent very closely.
摘要:
In a method for regulating a combustion process of an internal combustion engine with exhaust-gas recirculation, which can be operated with a variable air/fuel ratio, and a fresh-air flow and a recirculated exhaust-gas flow, both the fresh air and the recirculated exhaust-gas flow are metered. The combustion process of an internal combustion engine with exhaust-gas recirculation is regulated, wherein the method makes precise determination of the exhaust-gas recirculating rate possible with a low fault tolerance.
摘要:
The invention relates to a method for controlling an internal combustion engine in the neutral position, comprising the following steps: the actual idle rotational speed is measured, the actual idle rotational speed is compared to a desired idle rotational speed, correction torque is determined according to the actual idle rotational speed gradients when the actual idle rotational speed deviates from the desired idle rotational speed by more than a predefined value, the correction torque is added to the actual motor torque demand of the internal combustion engine. The advantage of said invention is that the control of the idle rotational speed also takes into account the actual idle rotational speed gradients and the correction torque is added directly to the motor torque demand such that, overall, a very rapid control characteristic is obtained.
摘要:
The present invention belongs to the field of agricultural fungicide and in particular disclosed N-(2-substituted phenyl)-N-methoxycarbamates and their preparation as well as use. Compounds according to the present invention are shown as the general formula I. Compounds according to the present invention have very good fungicidal activities and can be used for the control of plant fungicidal diseases, such as wheat powdery mildew, melon powdery mildew, apple powdery mildew, grape powdery mildew, strawberry powdery mildew, wheat rust, soybean rust, wheat Pythium root rot, cucumber Alternaria blight, rice “bakanae” disease, rice sheath blight, cucumber Fusarium wilt, cucumber anthracnose, rice blast, rice false smut, corn southern leaf blight.
摘要:
The invention concerns a method and a device for determining an internal combustion engine phase. Said device comprises an intake zone, an exhaust zone, at least one camshaft which acts on the gas exchanging valves and whereof the phase can be adjusted relative to that of a crankshaft by means of a phase adjusting device, and at least one sensor whereof the measurement signal enables a specific phase to be determined. The phase adjusting device is controlled in accordance with phase adjustment of the camshaft until detection of a gas reflux from the exhaust zone to the intake zone. A correction value is determined based on the associated specific phase and on a specific allocated phase. In the next operating mode, the respectively specific phase is corrected based on the correction value.
摘要:
The invention relates to aryl ether compounds and its preparation method and use thereof. The aryl ether compounds of the invention having general formula (I): The groups are as defined as specification. The aryl ether compounds of present invention have wide spectrum fungicidal activity, and may be used to control diseases in all sorts of plants caused by oomycete, basidiomycete, ascomycete pathogens and deuteromycete. The some of the compounds have very good insecticidal and acaricidal activity, and may be used to control insects and mites.
摘要:
A method and a device for monitoring a rotational speed of a first charger for an internal combustion engine, especially an exhaust gas turbocharger, are provided. A first exhaust value representing an exhaust gas composition of the internal combustion engine in a first exhaust section is defined, and a first speed value representing the rotational speed of the first charger is determined according to the defined first exhaust value. The first exhaust value is regulated to a predefined first reference value using a first correcting variable which is ascertained as required for regulation. The first rotational speed value is determined depending on the first correcting variable.