Abstract: Disclosed is a roller taper grinding method for a planetary roller screw mechanism. The method includes steps as follows: step 1: determining basic parameters and a bearing capacity of a planetary roller screw mechanism to be machined; step 2: establishing deformation and force balance equations of the planetary roller screw mechanism according to the basic parameters and the bearing capacity of the planetary roller screw mechanism determined in step 1; step 3: iteratively computing an optimal grinding taper angle of roller grinding according to the deformation and force balance equations established in step 2; step 4: determining process parameters of roller grinding; and step 5: grinding a roller taper of the planetary roller screw mechanism by a machine tool according to the process parameters determined in step 4.

Abstract: A system (100) for establishing a secure wireless peer-to-peer (P2P) connection using near-field communication (NFC) comprising a first device (105), the first device (105) comprising near-field communication hardware (115) to communicate with a second device (110) and obtain a handover select record, in which the handover select record comprises data to establish a secure wireless peer-to-peer (P2P) connection with the second device (110), and in which a context of the first device (105) and second device (110) defines an action to be initiated on the second device (110).

Abstract: A system (100) for establishing a secure wireless peer-to-peer (P2P) connection using near-field communication (NFC) comprising a first device (105), the first device (105) comprising near-field communication hardware (115) to communicate with a second device (110) and obtain a handover select record, in which the handover select record comprises data to establish a secure wireless peer-to-peer (P2P) connection with the second device (110), and in which a context of the first device (105) and second device (110) defines an action to be initiated on the second device (110).