275 results about "Pulse cycle" patented technology

A method for processing substrate in a processing chamber, which has at least one plasma generating source and a gas source for providing process gas into the chamber, is provided. The method includes exciting the plasma generating source with an RF signal having RF frequency. The method further includes pulsing the gas source, using at least a first gas pulsing frequency, such that a first process gas is flowed into the chamber during a first portion of a gas pulsing period and a second process gas is flowed into the chamber during a second portion of the gas pulsing period, which is associated with the first gas pulsing frequency. The second process gas has a lower reactant-gas-to-inert-gas ratio relative to a reactant-gas-to-inert-gas ratio of the first process gas. The second process gas is formed by removing at least a portion of a reactant gas flow from the first process gas.

A pulse arc welding method is provided for performing welding by causing welding current to flow through a welding wire and a base metal via a power supply tip. The welding current has a pulse cycle made up of a first peak time, a second peak time and a base time. A first peak current is applied during the first peak time, a second peak current, smaller than the first peak current, is applied during the second peak time, and a base current is applied during the base time. When a tip-base distance between an end of the power supply tip and the base metal is smaller or greater than a reference value, the first peak current is increased or decreased in accordance with the difference between the reference value and the tip-base distance.

The invention discloses pulse cycle detection equipment, which comprises a sensor for sensing and detecting a pulse wave signal of a detected subject; and a processor for processing the digital pulse wave signal which is sensed and detected by the sensor and undergoes analog-digital conversion so as to detect the pulse cycle of the detected subject, wherein the processor is configured to implement the following operations: as time goes on, calculating a differential value of the digital pulse wave signal; determining that the pulse wave signal reaches at the maximum value point and recording a time value corresponding to the maximum value point as the differential value is converted from a positive number to a negative number; recognizing the latest recorded maximum value point in the past time as the peak point of the pulse wave signal when the differential value is less than a dynamic threshold; and calculating a difference between the time values corresponding to the two continuous peak points so as to export the pulse cycle. The invention also discloses a pulse cycle detection method and wearable electronic equipment. By virtue of the pulse cycle detection equipment and the method, the real-time performance and the precision of pulse cycle detection can be improved.

A cryogenic fluid jet is used in an apparatus and a method for remote cooling of a cutting tool engaged in machining a workpiece under high-energy conditions, such as high-speed machining, hard-turning, cutting of difficult to machine materials, and combinations thereof. The apparatus and method use a stabilized, free-expanding cryogenic fluid jet having a pulse cycle time less than or equal to about 10 seconds. The apparatus and method increase the cleanliness of machined parts and chips and machining productivity of hard but brittle tools, including but not limited to tools which should not be cooled with conventional cooling fluids.