摘要:
A chiral compound, particularly a chiral secondary alcohol, can be efficiently resolved under a mild condition by acylation with an alkenyl acetate in the presence of a novel aminocyclopentadienyl ruthenium complex, an enzyme catalyst, and a base.
摘要:
A chiral compound, particularly a chiral secondary alcohol, can be efficiently resolved under a mild condition by acylation with an alkenyl acetate in the presence of a novel aminocyclopentadienyl ruthenium complex, an enzyme catalyst, and a base.
摘要:
The present invention provides novel crystalline forms D1 and D2 of [R—(R*,R*)]-2-(4-fluorophenyl)-β,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrole-1-heptanoic acid hemicalcium salt, and hydrates thereof. The crystalline forms D1 and D2 have X-ray powder diffraction peaks described in FIGS. 1 and 3, respectively. Further, the present invention provides processes for preparing the crystalline forms and pharmaceutical compositions comprising the crystalline forms. The crystalline forms can be produced on a commercial scale and exhibit excellent stability.
摘要:
The gait rehabilitation robot having a passive mechanism includes: a first auxiliary link member connected to a portion between the pelvis and the knee of a rehabilitating person; a joint coupled to a lower end of the first auxiliary link member; a second auxiliary link member coupled to the lower end of the joint and connected to a portion between the pelvis and the knee of the rehabilitating person; a first spring coupled to an upper end of the first auxiliary link member to prevent introversion and extroversion of a hip point from occurring when the rehabilitating person is walking; a foot support which comes into contact with the foot of the rehabilitating person; an ankle joint for connecting the foot support and the second auxiliary link member; and a second spring coupled to a side of the foot support to compensate an entropion angle.
摘要:
A device for generating limit torque with a function of yielding a torque change in real time includes a spring, a rotating portion having a cam surface formed therein, a transmitting portion transmitting an elastic force of the spring to the cam surface, a fixed portion with respect to which the relative rotation of the rotating portion is generated, and a limit-torque control portion provided to the fixed portion so as to control limit torque of the rotating portion by adjusting the elastic force of the spring. In the device, the limit-torque control portion controls the limit torque of the spring by changing the elastic force of the spring in real time.
摘要:
The present invention relates to a device for generating stiffness and a method for controlling stiffness, which can generate stiffness by using elastic members and can control the stiffness, and a joint of a robot manipulator to which the device and method can be applied. The device for generating stiffness includes a rotating shaft; a plurality of elastic members fixed to the rotating shaft; upper and lower circular plates that are disposed so as to be spaced from each other with the elastic members interposed therebetween, are independently driven with respect to the rotating shaft by power generating units thereof, respectively, and respectively have slits of which the number is equal to the number of the elastic members; and a plurality of moving members that are inserted into the slits formed in the upper and lower circular plates, respectively, and are connected to the elastic members so as to move.
摘要:
The present invention relates to a device for generating limit torque, which generates a rotational displacement to protect a rotating device and automatically returns to the initial position when an external force is eliminated, and a rotating device using the same. The device includes a flexible member that is vertically connected to a rotating shaft and of which the length can be varied in an inward and outward direction with respect to the rotating shaft; an elastic member that is connected to the flexible member and causes the flexible member to receive an elastic force in the outward direction with respect to the rotating shaft; and a cam member that is rotatably connected to the rotating shaft and delivers a rotating force of the rotating shaft to a rotating member. The cam member has a through-hole in which a rotational displacement is generated and through which the flexible member returns to the initial position. According to the present invention, the device for generating limit torque can generate limit torque with a relatively simple structure, and can secure stability.
摘要:
The present invention relates to a device for generating stiffness and a method for controlling stiffness, which can generate stiffness by using elastic members and can control the stiffness, and a joint of a robot manipulator to which the device and method can be applied. The device for generating stiffness includes a rotating shaft; a plurality of elastic members fixed to the rotating shaft; upper and lower circular plates that are disposed so as to be spaced from each other with the elastic members interposed therebetween, are independently driven with respect to the rotating shaft by power generating units thereof, respectively, and respectively have slits of which the number is equal to the number of the elastic members; and a plurality of moving members that are inserted into the slits formed in the upper and lower circular plates, respectively, and are connected to the elastic members so as to move.