214 results about "Specific rotation" patented technology

An off-line feed rate scheduling method of a CNC machining process includes selecting a constraint variable and inputting a reference value related to the constraint variable; estimating a cutting configuration where a maximum constraint variable value (CVV) occurs through ME Z-map modeling; receiving the estimated cutting configuration and estimating a specific rotation angle (φs) where the maximum constraint variable value occurs through constraint variable modeling; calculating a feed rate that satisfies the reference value of the constraint variable at the estimated specific rotation angle; and applying the calculated feed rate to the NC code. Cutting force or machined surface error may be selected as a constraint variable depending on machining conditions.

The invention relates to a technological method for synthesizing optical pure L- / D-lactide by using a biomass organic guanidine catalyst method. The technological method comprises the following step of: with biomass organic guanidine compound creatinine (CR) as a catalyst and L- / D-lactic acid (mass content of 90%) as a raw material, synthesizing the optical pure L- / D-lactide by using a reactive reduced pressure distillation catalysis method. The technological method has the advantages that the used catalyst is the biomass organic guanidine compound creatinine and free of toxicity, metal and cytotoxicity; the synthesized lactide is high in purity (the specific rotation [Alpha] 25D of the L-lactide ranges from minus 276 to minus 280, and the specific rotation [Alpha] 25D of the D-lactide is 280), and does not contain any metal; the use amount of the catalyst in the reaction process is low, the technological process is simplified as a process for rectifying and purifying a crude lactide product by using a conventional method is not used; and the technological method is simple and convenient to operate and easy for industrial implementation.

The control procedure of the invention sets a target rotation speed Ne* and a target torque Te* of an engine corresponding to a torque demand Td* required for driving the vehicle (steps S100 to S120). In response to an upshift request for a gear of a transmission, the control procedure sets a positive pre-upshift target rotation speed Nmtag to a target rotation speed Nm1* of a first motor (step S230). The control procedure changes the target rotation speed Ne* of the engine to a specific rotation speed corresponding to the pre-upshift target rotation speed Nmtag of the first motor (step S240) and subsequently implements an actual change of the gear in the transmission (step S310). This arrangement effectively restrains a battery from being overcharged with excess electric power.

In a motor controller, if a failed electric current flow in any one of phases of a motor is detected, a motor control signal is generated, based on a phase other than the phase with the failed electric current flow, in such a manner that a motor electric current matches a required torque except for at a specific rotation angle corresponding to the phase with the failed electric current flow.

In one embodiment, a first motor is used upon stopping or starting of an engine during driving of a vehicle. When a stop control or a start control of the engine is executed, a target drive force required to be generated by a second motor is calculated based on a drive force required for driving. A positive drive force required for elimination in a specific rotation direction of backlash occurring in mutual meshing sections of gears of a power distribution mechanism is added to the target drive force. Meanwhile, a braking force required of a brake in order to cancel the added positive drive force so as not to be transmitted to drive wheels is calculated. Based on the results of calculation, coordinated control is executed in which the second motor and the brake are operated in a linked manner.

A rotating electric machine includes a stator having a stator coil and a rotor provided rotatably around a specific rotation axis with respect to the stator. The rotor includes a plurality of magnets, a plurality of magnetically-assisted salient pole members provided between poles of any adjacent two magnets from among the plurality of magnets, and a magnetoresistance variation unit provided in the magnetically-assisted salient pole member along an axial direction of the rotation axis at a position offset in a circumferential direction of the rotation axis from a q-axis passing through a salient pole center of the magnetically-assisted salient pole member. The amount of offset of the magnetoresistance variation unit from the q-axis varies depending on positions of the magnetically-assisted salient pole members so that torque fluctuations cancel each other when power is applied.