摘要:
A multi-degree-of-freedom actuator includes a movable element having a plurality of permanent magnets, and a stator including a stator core and a plurality of coils. The permanent magnets are arranged in the X direction such that the number P of poles is an even number of two or more. The coils are of two types: X-direction driving coil and Z-direction driving coil. The Z-direction driving coils the number of which is P are disposed at positions opposite to magnetic poles of the permanent magnets. The X-direction driving coil or coils the number of which is P/2 are each disposed at a position opposite to an intermediate point between two adjacent ones of the magnetic poles of the permanent magnets.
摘要:
A multi-degree-of-freedom actuator includes a movable element having a plurality of permanent magnets, and a stator including a stator core and a plurality of coils. The permanent magnets are arranged in the X direction such that the number P of poles is an even number of two or more. The coils are of two types: X-direction driving coil and Z-direction driving coil. The Z-direction driving coils the number of which is P are disposed at positions opposite to magnetic poles of the permanent magnets. The X-direction driving coil or coils the number of which is P/2 are each disposed at a position opposite to an intermediate point between two adjacent ones of the magnetic poles of the permanent magnets.
摘要:
In a stratified combustion rotary piston engine of the Wankel-type wherein individual combustion chambers are charged with a fuel-air mixture by a fuel-air mixture supply system and air by an air supply system, a fuel supply system incorporated in said fuel-air supply system being adapted to supply fuel in the injection manner by varying the amount of fuel to be injected for individual combustion chambers so that the overall air/fuel ratio is altered for the individual combustion chambers.
摘要:
This stage apparatus includes a movable table to hold a sample, a levitation unit to operate the movable table at least in a vertical direction, and a linear motor to operate the movable table in a first horizontal direction in a horizontal plane, including a linear motor movable element arranged inside the movable table and a linear motor stator arranged inside the movable table.
摘要:
In the stratified combustion rotary piston engine of the Wankel-type, wherein individual combustion chambers are charged with a relatively rich fuel-air mixture and a relatively lean fuel-air mixture or air by first and second intake systems, each system incorporating a fuel injection means, at least one of said fuel injection means being actuated for only selected suction strokes of individual combustion chambers so that the overall air/fuel ratio is altered for the individual combustion chambers.
摘要:
There is provided a stage apparatus at low cost by constituting a counter mass constituting a movable portion of the stage apparatus at low cost.In a stage apparatus used for fabrication or for inspection, by fastening two pieces of first frames (1) and two pieces of second frames (2) by bolts in a positional relationship of making the first frames (1) and the second frames (2) respectively opposed to each other, a counter mass constituting a movable portion of the stage apparatus is constituted, by attaching ceramic-made air pads (4) to air pad attaching faces respectively formed at upper faces and lower faces of two pieces of the first frames (1) on both sides in a length direction, four air bearings are constituted at four corners of the counter mass of the stage apparatus, and the counter mass is floated up by the four air bearings.
摘要:
A stratified combustion rotary piston engine of the type which is supplied with a fuel-air mixture from a peripheral intake port and only air from a side intake port, wherein a fuel supply system for supplying said fuel-air mixture to said peripheral intake port comprises a fuel injection device which is controlled depending upon the air flow to said peripheral intake port and said side intake port.
摘要:
A rotary piston engine having peripheral and side intake ports, said peripheral intake port being supplied with a fuel-air mixture while said intake port being supplied with only air, wherein a check valve is provided in an intake passage which supplies the fuel-air mixture to said peripheral intake port.
摘要:
A fuel supply system for a rotary piston engine of the Wankel-type, adapted to supply fuel in the injection manner by varying the amount of fuel to be injected for individual combustion chambers so that the combustion of the rich or lean fuel-air mixture is effected substantially alternately in succeeding combustion chambers.