1. A rotor for rotation about a centre axis in an electrical motor, the rotor comprising:
a core made of a magnetically conductive material,
a magnet located in a cavity in the core, the cavity having a first cross-sectional area and allows insertion of the magnet into the cavity via an opening in an end face of the core, and
an end plate which covers the end face, the end plate having an aperture with a second cross-sectional area,
wherein aperture is provided such that a first portion of the opening into the cavity is in communication with the aperture and such that a remaining, second, portion of the cavity is covered by the end plate to secure the magnet in the cavity independently upon the orientation of the end plate around the centre axis.
2. The rotor according to claim 1, wherein the first portion constitutes at least 50 percent of the cross sectional area of the opening into the cavity.
3. The rotor according to claim 1, wherein the end plate has a circular outer peripheral rim.
4. The rotor according to claim 1, further comprising a squirrel cage with axially opposite short circuit rings, and wherein the end plate has a smaller radial size than the radial size of the short circuit ring and a shape which matches an inner surface of the short circuit ring.
5. The rotor according to claim 1, wherein the second area is equal to, or larger than the first area.
6. The rotor according to claim 1, wherein the aperture is arch shaped.
7. The rotor according to claim 1, comprising a plurality of magnets and wherein the end plate comprises a plurality of apertures.
8. The rotor according to claim 6, wherein the arch-shaped aperture(s) define(s) an arched radial outer peripheral edge and an arched radial inner peripheral edge, and wherein one of the magnets is secured in the cavity by the inner peripheral edge, and an adjacent magnet is secured in the cavity by the outer peripheral edge.
9. The rotor according to claim 1, wherein the end plate is made from a magnetically conductive material.
10. The rotor according to claim 1, wherein the end plate is made from the same material as the rotor.
11. The rotor according to claim 1, wherein the end plate has a peripheral rim with a first rim portion and a second rim portion forming different radial distances to the centre axis.
12. A method of making a rotor comprising:
a core made of a magnetically conductive material,
a magnet located in a cavity in the core, the cavity having a first cross-sectional area and allowing insertion of the magnet into the cavity via an opening in an end face of the core, and
an end plate which covers the end face, the end plate having an aperture with a second cross-sectional area
the method being characterised in that aperture is provided such that a first portion of the opening into the cavity is in communication with the aperture and such that a remaining, second, portion of the cavity is covered by the end plate to secure the magnet in the cavity independently upon the orientation of the end plate around the centre axis.
13. The method according to claim 12, wherein the aperture is provided at least in the size of the first cross-sectional area.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for a scanning of a station (STA), comprising:
transmitting a probe request frame including a scanning priority for a plurality of access points (APs); and
monitoring sequentially whether a probe response frame is received as a response to the probe request frame from at least one of the plurality of APs based on the scanning priority.
2. The method of claim 1,
wherein the probe request frame includes a service set identifier (SSID) list indicating the plurality of APs, and
wherein the scanning priority is the priority for each of the plurality of APs, and
wherein the scanning priority is determined based on the SSID list.
3. The method of claim 2,
wherein the monitoring comprises:
monitoring whether the probe response frame is received during a first channel duration from an AP that has the highest priority among the plurality of APs; and
monitoring whether the probe response frame is received during a second channel duration from an AP that has the next highest priority among the plurality of APs,
wherein the first channel duration is ahead of the second channel duration.
4. The method of claim 3,
wherein the probe request frame includes information on the first channel duration and the second channel duration.
5. The method of claim 3,
wherein the monitoring whether the probe response frame is received during a second channel duration from the AP that has the next highest priority among the plurality of APs is performed if the probe response frame is not received from the AP that has the highest priority during the first channel duration.
6. A wireless apparatus for scanning in a wireless local area network system, the wireless apparatus comprising a processor,
wherein the processor is configured to:
transmit a probe request frame including a scanning priority for a plurality of access points (APs), and
monitor sequentially whether a probe response frame is received as a response to the probe request frame from at least one of the plurality of APs based on the scanning priority.
7. The wireless apparatus of claim 6,
wherein the probe request frame includes a service set identifier (SSID) list indicating the plurality of APs, and
wherein the scanning priority is the priority for each of the plurality of APs, and
wherein the scanning priority is determined based on the SSID list.
8. The wireless apparatus of claim 7,
wherein the processor is configured to:
monitor whether the probe response frame is received during a first channel duration from an AP that has the highest priority among the plurality of APs; and
monitoring whether the probe response frame is received during a second channel duration from an AP that has the next highest priority among the plurality of APs,
wherein the first channel duration is ahead of the second channel duration.
9. The wireless apparatus of claim 8, wherein the probe request frame includes information on the first channel duration and the second channel duration.
10. The wireless apparatus of claim 8,
wherein the processor is configured to monitor whether the probe response frame is received during a second channel duration from the AP that has the next highest priority among the multiple APs if the probe response frame is not received from the AP that has the highest priority during the first channel duration.