Abstract: A control system for a switched reluctance (SR) motor includes a Direct Current (DC) power source, and an inverter. The control system includes a user interface configured to enable an operator to specify a desired torque output. The control system further includes a controller which converts a DC current from the Alternating Current (AC) supplied to the SR motor by the inverter. The controller estimates an actual power output generated by the SR motor based on a DC voltage supplied by the DC power source to the inverter, and the converted DC current. The controller estimates an actual torque output based on the actual power output and a rotational speed of the SR motor. The controller compares the actual torque output and a desired torque output to calculate a torque error. The controller adjusts a torque output limit and the rotational speed of the SR motor.

Abstract: A guard (120) for an antenna (602) includes a base (206) defined between a front edge (209), a rear edge (211), and two lateral edges (213, 215). A front generally triangular surface (208) extends from the front edge (209) to a narrowed upper edge, a rear generally triangular surface (210) extends from the rear edge (211) to a narrowed upper edge, and two lateral generally triangular surfaces (212, 214), each having a narrowed upper edge, extend from their respective lateral edge (213, 215). The narrowed upper edges form an apex (204), which forms an opening (202). The surfaces (208, 210, 212, 214) at least partially define an internal cavity (304) that encloses a portion (604) of the antenna (602). The front surface (208) is at a first angle (?) relative to a mounting surface (117) and the rear surface (210) is at a second, larger angle (?) relative to the mounting surface (117).

Abstract: A support structure for establishing a computer workstation around a chair, such as an easy chair or wheelchair. The support structure includes a flat base having a plurality of vertical posts projecting upwardly therefrom. Two of the posts have swing arms terminating in additional swing arms. An inclinably adjustable support platform is disposed above each final swing arm. Either support arm may optionally have a drawer and a clip for retaining papers. The compound swing arms enable the platform to be adjusted to any desired proximity to the post, within a range. The working surfaces of each support platform can be inclined, and the height of each support platform can be adjusted.