Abstract: An inverter driving apparatus includes an inverter having a plurality of legs respectively corresponding to each of a plurality of phases and the control unit generating space vector modulation signals based on a phase voltage command, each of the space vector modulation signals corresponding to each of the plurality of phases, respectively, determining whether an output voltage of the inverter corresponding to at least one space vector modulation signal of the space vector modulation is in a non-linear region by determining whether each voltage of the space vector modulation signals is included in a predetermined range, generating a terminal voltage command by determining whether or not to apply an offset voltage to each of the space vector modulation signals based on the determination of the non-linear region, and controlling a turn-on state of at least one switch included in each of the plurality of legs by modulating the terminal voltage command based on pulse width modulation.

Abstract: A motor driving apparatus driving a motor that has a plurality of windings respectively corresponding to a plurality of phases includes a first inverter including a plurality of first switching elements and connected to a first end of each of the windings, a second inverter including a plurality of second switching elements and connected to a second end of each of the windings, and a controller determining a voltage command of the first inverter based on a voltage command of the motor and the active vector corresponding to a duty of the second switching elements and controlling the first switching elements through pulse width modulation based on the voltage command of the first inverter.

Abstract: A motor driving apparatus which drives a motor having a plurality of windings corresponding to a plurality of phases includes: a first inverter having a plurality of first switching elements and connected to a first end of each winding; a second inverter having a plurality of second switching elements and connected to a second end of each winding; and a controller configured to control pulse width modulation, by distributing a preset voltage command of the motor into a voltage command of the first inverter and a voltage command of the second inverter at the same rate and by generating duties of the first switching elements, wherein the controller determines the duties of the second switching elements and determines the duties of the first switching elements on and the duties of the first switching elements.

Abstract: A motor driving apparatus driving a motor including a plurality of windings corresponding to each of phases, includes a mode change switch and a plurality of inverters that operate the motor in a closed end winding mode or an open end winding mode; and a controller configured for controlling the mode change switch and the plurality of inverters according to a first mode determination result based on a reverse magnetic flux and a second mode determination result according to an output power limit for each mode.

Abstract: A motor driving apparatus which drives a motor having a plurality of windings corresponding to a plurality of phases includes: a first inverter having a plurality of first switching elements and connected to a first end of each winding; a second inverter having a plurality of second switching elements and connected to a second end of each winding; and a controller configured to control pulse width modulation, by distributing a preset voltage command of the motor into a voltage command of the first inverter and a voltage command of the second inverter at the same rate and by generating duties of the first switching elements, wherein the controller determines the duties of the second switching elements and determines the duties of the first switching elements on and the duties of the first switching elements.

Abstract: The present invention relates to a novel nicotinamide compound, a method for preparing the same, and a herbicide comprising the compound. The compound of the present invention is useful as a herbicide for foliar treatment or soil treatment because it has high safety for wheat or corn and has excellent herbicidal activity against grassy weeds, sedge weeds or broadleaf weeds.

Abstract: A control system for reducing drive shaft vibration of an environment-friendly vehicle includes: a drive shaft speed extraction unit that extracts an actual drive shaft speed of a motor and extracts a drive shaft speed from which a forced vibration component that is to be transferred by an engine to the drive shaft is removed; a model speed computation unit that calculates a model speed of the drive shaft; a free vibration computation unit that computes a free vibration component on the basis of deviation between the drive shaft speed and the calculated model speed; and a first torque computation unit that calculates, from the free vibration component, a free vibration reduction compensation torque for reducing the drive shaft vibration.

Abstract: A method of controlling vibration reduction of a vehicle is capable of efficiently reducing vibration occurring when entering a P range on a ramp. The method includes: when an input to a parking range is received, determining whether or not a predetermined condition for entering a vibration reduction control mode is satisfied; when the entering condition is satisfied, calculating a motor torque for reducing vibration due to backlash by using the driving information; controlling a driving motor so as to output the calculated motor torque; controlling the parking device such that the parking range is engaged; determining whether or not a brake is released; and if the brake is released, reducing a motor torque output by the driving motor so that vibration due to the backlash is reduced.

Abstract: A control system for reducing drive shaft vibration of an environment-friendly vehicle includes: a drive shaft speed extraction unit that extracts an actual drive shaft speed of a motor and extracts a drive shaft speed from which a forced vibration component that is to be transferred by an engine to the drive shaft is removed; a model speed computation unit that calculates a model speed of the drive shaft; a free vibration computation unit that computes a free vibration component on the basis of deviation between the drive shaft speed and the calculated model speed; and a first torque computation unit that calculates, from the free vibration component, a free vibration reduction compensation torque for reducing the drive shaft vibration.

Abstract: A method for controlling revolutions per minute (RPM) flare, in which an RPM of a transmission increases due to clutch slip, for a hybrid vehicle can include: determining whether gear-shifting is performed in a transmission of the hybrid vehicle; detecting whether RPM flare of the transmission occurs when it is determined that the gear-shifting is performed; and controlling a torque of a motor of the hybrid vehicle so as to reduce the RPM flare of the transmission by reducing the torque of the motor when the RPM flare of the transmission is detected.

Abstract: A method of controlling vibration reduction of a vehicle is capable of efficiently reducing vibration occurring when entering a P range on a ramp. The method includes: when an input to a parking range is received, determining whether or not a predetermined condition for entering a vibration reduction control mode is satisfied; when the entering condition is satisfied, calculating a motor torque for reducing vibration due to backlash by using the driving information; controlling a driving motor so as to output the calculated motor torque; controlling the parking device such that the parking range is engaged; determining whether or not a brake is released; and if the brake is released, reducing a motor torque output by the driving motor so that vibration due to the backlash is reduced.

Abstract: An active vibration reduction control apparatus of a hybrid vehicle includes: a vibration extraction device configured to extract a first vibration signal from a motor connected to a drive shaft of the hybrid vehicle; a torque generator configured to generate a first torque for vibration reduction based on the first vibration signal; and a controller configured to apply the first torque to the motor.

Abstract: A method of decreasing vibration during release of a stop gear of a vehicle can be applied to an eco-friendly vehicle for decreasing vibration generated when a driver releases a P step of a gear lever while torsion occurs in a drive shaft of the vehicle. Reaction force torque of a driving motor is controlled so as to output reaction force that has been generated in a parking sprag by a driving motor when torsion occurs in the drive shaft after entrance of the gear lever into the P step, so as to decrease vibration generated because torsion reaction force of the drive shaft vanishes at the same time.

Abstract: A method for controlling revolutions per minute (RPM) flare, in which an RPM of a transmission increases due to clutch slip, for a hybrid vehicle can include: determining whether gear-shifting is performed in a transmission of the hybrid vehicle; detecting whether RPM flare of the transmission occurs when it is determined that the gear-shifting is performed; and controlling a torque of a motor of the hybrid vehicle so as to reduce the RPM flare of the transmission by reducing the torque of the motor when the RPM flare of the transmission is detected.

Abstract: A pyridine-based compound containing an isoxazoline ring represented by Formula 1 or an agrochemically acceptable salt thereof can be used as a herbicide. A method of preparing the pyridine-based compound containing an isoxazoline ring represented by Formula 1 includes reacting a compound represented by Formula 2 with a compound represented by Formula 3.

Abstract: A method for reducing vibration of a drive shaft of an eco-friendly vehicle includes calculating a model velocity of the drive shaft, obtaining a vibration component based on a deviation between an actual velocity of the drive shaft and the calculated model velocity, and generating a vibration reduction compensation torque for reduction in vibration of the drive shaft from the vibration component.

Abstract: A method of decreasing vibration during release of a stop gear of a vehicle can be applied to an eco-friendly vehicle for decreasing vibration generated when a driver releases a P step of a gear lever while torsion occurs in a drive shaft of the vehicle. Reaction force torque of a driving motor is controlled so as to output reaction force that has been generated in a parking sprag by a driving motor when torsion occurs in the drive shaft after entrance of the gear lever into the P step, so as to decrease vibration generated because torsion reaction force of the drive shaft vanishes at the same time.

Abstract: A motor speed control method and system for improving the performance of a running resistance evaluation of a hybrid electric vehicle are provided. The method includes determining whether a vehicle satisfies a running resistance evaluation start condition. When the vehicle satisfies the running resistance evaluation start condition, the speed of a motor is adjusted, which adjusts an input speed of a transmission to be equal to an output speed of the transmission. A speed adjustment of the motor is then completed using the speed of the motor and the output speed of the transmission.

Abstract: A method for reducing vibration of a drive shaft of an eco-friendly vehicle includes calculating a model velocity of the drive shaft, obtaining a vibration component based on a deviation between an actual velocity of the drive shaft and the calculated model velocity, and generating a vibration reduction compensation torque for reduction in vibration of the drive shaft from the vibration component.

Abstract: Disclosed herein is a composition containing a novel strain Streptomyces scopuliridis KR-001 strain or a culture broth thereof as an active ingredient for weed control. More particularly, the Streptomyces scopuliridis KR-001 strain of the present invention, culture broth thereof, or culture fraction shows an excellent weed-killing ability on grass weeds, broadleaf weeds, and hard-to-control weeds, and a medium composition containing a carbon source and a nitrogen source in an optimal condition may significantly increase yield of an active material produced by the strain with low cost. Therefore, the strain can be usefully employed to a herbicide composition for weed control and a method for weed control.