摘要:
A patient support apparatus (10) has a powered transport device (24) that is operable to propel the apparatus (10) along a floor (150) in forward and reverse longitudinal directions, as well as in left and right lateral directions. A user input (70) for selection of discrete speed settings for the powered transport device (24) is included on the patient support apparatus (10). User inputs (34) for controlling the direction that the apparatus (10) is propelled are provided at the head end (152), foot end (154), and both sides of the patient support apparatus (10).
摘要:
A control system for controlling a motor arrangement for differentially driving left and right wheels of a motorized vehicle, the control system comprising: a comparator for receiving yaw rate sensor signals from a yaw rate sensor attached to the vehicle, the yaw rate sensor signals being indicative of actual yaw rates of the vehicle and for receiving yaw rate reference signals generated by a user input device, the yaw rate reference signals being indicative of user demanded yaw rates for the vehicle, the comparator arranged to output yaw rate error signals based on the difference between the yaw rate sensor signals and the yaw rate reference signals; a control loop for processing the yaw rate error signals to generate yaw rate correction signals for controlling the motor arrangement to reduce the yaw rate error signals, wherein the control loop comprises a variable limiter for limiting the yaw rate correction signals to values within a variable limit, the variable limit varying in dependence upon the yaw rate error signals.
摘要:
Embodiments of the present disclosure include a wheelchair configured to reposition an occupant between a lowered and a raised position. The wheelchair can include a frame, a seat moveable relative to the frame, a drive wheel, and one or more pairs of arm assemblies. The arm assembly includes a wheel configured to move from a first spatial location when the wheel chair is operating on flat, level ground to a second spatial location that is different than the first spatial location. Arm limiters that can selectively engage the arm assembly dependent on the position of the arm assembly and surface conditions of ground and can limit the range of motion of the arm assembly and sometimes other operational aspects of the chair.
摘要:
A tracked mobility device includes a pair of track drives having a rear weight-bearing wheel assembly, a center weight-bearing wheel assembly, a forward weight-bearing wheel assembly, and a front roller assembly. The rear weight-bearing wheels, the center weight-bearing wheels, and the forward weight- bearing wheels are fixed to the frame at a height effective to cause the main weight-bearing surface to always have a "V"-shaped lower surface when viewed from the side. The center weight-bearing wheels, the forward weight-bearing wheels, and the front rollers are fixed to the frame at a height effective to cause that portion of each track drive always to have a "V"-shaped lower surface when viewed from the side. At least one powered drive wheel is provided, and at least one of the rollers is a tensioning roller.
摘要:
An electric vehicle (11) which travels by driving actuators (32) includes: a monitor unit which monitors external environment or internal environment of the electric vehicle (11); an alarm unit (21) which outputs, based on monitoring information obtained by the monitoring unit, a vibration velocity signal indicating velocity which changes in a cycle; a travel information generation unit (15) which calculates a target travel velocity based on a steering direction and a control input provided by an operator of the electric vehicle (11), and generates travel control information for controlling the actuators (32) based on the target travel velocity; and a control unit (16) which controls the actuators based on the travel control information. The travel information generation unit (15) regenerates the travel control information by adding the vibration velocity signal to the target travel velocity upon receiving the vibration velocity signal.
摘要:
An electric wheelchair comprising a movable seat part (1), a body part (2) served as a support for the seat part, a seat adjustment mechanism (3) arranged under the seat part, a bottom part (4), and a crawler moving mechanism (5). The crawler moving mechanism (5) comprises two sets of crawlers arranged respectively at both sides underneath the bottom part, and each of which comprises a front crawler and a rear crawler. The bottom part (4) is comprised of a front portion and a rear portion, which are movably connected with a coupling arrangement and capable of deflection with respect to each other. The crawler moving mechanism (5) further comprises movable stretching crawlers arranged respectively at outside of the front crawler, and fixed stair-climbing crawlers arranged respectively at outside of the rear crawler, wherein a free end of the fixed stair-climbing crawler forms a specific angle relative to the rear crawler.