762 results about "Traction drive" patented technology

An automatic pool cleaner is provided of the type for random travel over submerged floor and side wall surfaces of a swimming pool or the like to dislodge and collect debris. The pool cleaner includes an electric-powered traction drive system for rotatably driving cleaner wheels, and an electric-powered water management system including a water supply pump and related manifold unit for venturi-vacuuming and collection of settled debris within a porous filter bag. A directional control system including an on-board compass monitors turning movements of the pool cleaner during normal random travel operation, and functions to regulate the traction drive system in a manner to prevent, e.g., excess twisting of a conduit such as a power cable tethered to the pool cleaner.

A vehicle propulsion includes an alternating current (AC) traction drive, a first energy storage system electrically coupled to the traction drive through a direct current (DC) link, a second energy storage system electrically coupled to the traction drive such that the voltage output from the second energy storage system is decoupled from the DC link using a bi-directional boost converter, and a uni-directional current device that is poled to conduct current from the low voltage side of the boost converter to the high voltage side of the boost converter.

A vehicle propulsion includes an alternating current (AC) traction drive, a first energy storage system electrically coupled to the traction drive through a direct current (DC) link, a second energy storage system electrically coupled to the traction drive such that the voltage output from the second energy storage system is decoupled from the DC link using a bidirectional boost converter, and an energy management system configured to control said first and second energy storage systems when the vehicle is operating in at least one of a pre-charge mode and a normal operation mode with the traction drive system enabled.

A super-turbocharger utilizing a high speed, fixed ratio traction drive that is coupled to a continuously variable transmission to allow for high speed operation is provided. A high speed traction drive is utilized to provide speed reduction from the high speed turbine shaft. A second traction drive provides infinitely variable speed ratios through a continuously variable transmission.

A hybrid prolusion system comprising a first energy storage unit operable to supply power to a traction drive motor. A second energy storage unit is coupled with the first energy storage unit to provide additional power on demand to the traction drive motor. An auxiliary power unit (APU) is used to charge the first battery to maintain a desired voltage across the first energy storage unit.

A robotic mower home finding system includes a charging station connected to an outer boundary wire loop, and a vehicle control unit on the robotic mower that directs a traction drive system to drive the robotic mower along a path offset a specified distance from an outer boundary wire loop toward the charging station. The vehicle control unit changes the specified distance randomly or incrementally so that the robotic mower does not take the same path to the charging station each time.

The invention discloses an exoskeleton with the function of assisting in jumping through energy storage of springs, relates to an exoskeleton, and solves the problems that a conventional exoskeleton is mainly used for enhancing walking or running, and an exoskeleton used for improving the simple exercise capacity of a human body has not yet been provided. The exoskeleton comprises a left leg, a right leg and a back. Both the left leg and the right leg comprise thighs, calves, feet, hip joints, knee joints and ankle joints. The back is rotationally connected with the thighs through the hip joints. The thighs are rotationally connected with the calves through the knee joints. The calves are rotationally connected with the feet through the ankle joints. The exoskeleton further comprises a driving motor, a lead screw pair, an energy storage spring pulling plate, an energy storage spring releasing plate, a pull ring, a stay cord, a connecting plate, an auxiliary pressure spring mechanism, return poking rods, two hooks, two guide rails, two energy storage springs, two reset springs, two first traction driving steel wire ropes, two second traction driving steel wire ropes, two auxiliary pulleys, two reserving pulleys and two connecting rods. The exoskeleton is used for assisting in walking or jumping.

The invention discloses an electric power motor train unit grouping method more flexible and belongs to the field of motor train unit grouping methods of electric power motor train unit vehicles based on electric power electronic transformers. According to the electric power motor train unit grouping method, carriages, except a train head and a train tail, of a motor train unit are provided with novel electric power electronic transformers which have the functions of transformers and also the functions of traction convertors and serve as novel power supply devices so that a traction drive system of the whole train can be more efficient, capable of better saving energy and lighter, the pantograph layout and the grouping method of basic motor train units are improved based on the fact, and the electric power motor train unit grouping method is more flexible. In addition, the industrial Ethernet serves as a new communication bus between all novel motor train carriages and a drive control system to replace a traditional rail vehicle MVB communication bus, the data transmission efficiency is improved, the congestion probability is reduced, the overall system reliability of coupling or decoupling of the motor train is improved, and safety of the train during running is improved.

The prsent invention discloses a multistoried domestic building staircase safety elevator which is installed according to multistoried domestic building staircase, variable-frequency speed regulated and controlled by computer. It mainly includes passenger-carrying device, suspended mechanism, traction drive device, control system and spiral guideway. Said invention also provides their assembly scheme and construction method and steps. Said invention elevator is safe and reliable, and its cost is low.

An active control stick assembly is provided. In one embodiment, the active control stick assembly includes a housing assembly, a control stick coupled to the assembly housing for rotation about at least a first rotational axis, a first artificial force feel (AFF) motor disposed in the housing assembly, and a first traction drive mechanically coupling the first AFF motor to the control stick. A controller is operatively coupled to the first AFF motor. The controller is configured to selectively activate the first AFF motor to supply a torque through the first traction drive and acting on the control stick about the first rotational axis.