Abstract: An autonomous wheeled mobile robot (1) comprising at least one wheel-driving motor, an on-board computer, means for navigation, orientation, and maneuvering in an environment with moving obstacles; a sensor system; and a wireless communication system for receiving and sending.

Abstract: An autonomous wheeled mobile robot (1) comprising at least one wheel-driving motor, an on-board computer, means for navigation, orientation, and maneuvering in an environment with moving obstacles; a sensor system; and a wireless communication system for receiving and sending.

Abstract: An industrial robot having a gimbal-ring type suspension incorporating two axes renders therewith a translatorily movable arm swingable. According to the invention, the translatory movement is achieved in that the gimbal-ring type suspension, which can be swung with the aid of two motors, carries a part in the form of a box-like structure in which a platform provided with a rack can be slidably moved on guides, the platform being driven to translatory motion by a pinion. The platform carries a fourth, a fifth and a sixth motor, of which the fourth motor is able to rotate the arm about its longitudinal axis while the fifth and sixth motor drive their respective drive shafts for swinging the tool holder and rotating the same.

Abstract: A vehicle includes drive wheels and a motor connected thereto with torque controlling apparatus and a slip indicating device. Excessive slip indications per unit time are monitored and cause reduction in the torque applied by the motor until the slipping is overcome at which time torque is gradually increased.

Abstract: A static convertor with DC terminals for connection to a load object with a variable electromotive force includes a control arrangement for controlling the direct voltage of the convertor between maximum and minimum values, an arrangement for controlling the minimum value being connected to and dependent on the output of a sensing device which senses a quantity corresponding to the e.m.f. of the load object. The minimum value is limited to an upper value at which the commutation ability of the convertor is at least as great as the expected maximum direct current.