Geometric transmission error model analysis of high precision F2C-T drive
According to the structure of the newly high precision F2C-T pin-cycloid transmission, influence factors on the transmission error were analyzed, and the error synthesis model of the various driving factors and parts were established. Taking the F2C-T455 model as an example, the theory of transmission error were analyzed, comparing contribution rate by driving factors of each part, the main influence factors of transmission error of the system were obtained.
Analysis and Calculation of Precision of Gear Transmission
Based on the current theories and methods of transmission precision analysis for gear driven systems, deeply analyzed the main errors which influenced the precision of gear transmission, puts forward a probability analysis method of transmission error, which made the transmission error and backhaul more closely to the factual mesh condition and more actually infect the transmission capability of gears.
Integrated two-beam antenna array featuring dual-circular polarization
A concept of an integrated antenna array featuring two independent beams and dual circular polarization has been described. The antenna array consists of two radiating elements which are excited at two orthogonally placed feeding ports with the use of four appropriately connected 3-dB/90° directional couplers. Therefore, such an array generates two symmetrically located beams having right-handed circular polarization (RHCP) and identical two beams having left-handed circular polarization (LHCP). The presented concept has been verified by the design and measurements of an antenna array operating at 2.4 GHz frequency range.