Fault-tolerant electromechanical actuating device
AssigneeRENK Aktiengesellschaft
InventorAlexander Walter
Life of this patent
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Abstract
A fault-tolerant electromechanical actuating device for converting an electrical actuating signal into a mechanical output actuating value for use in vehicles, having two mutually independent control loops. Each loop has at least one controller and at least one electric motor which is driven by this controller and which, in each case via a self-locking transmission, drives the input to a summing transmission, which superimposes the actuating values of the actuating motors to form the output actuating value. The fault tolerance or reliability of the actuating device is ensured by a comparator controller, which monitors the functions of the other controllers. Interfaces between the controllers and between the subsystems ensure stringent isolation of electrical potential.
Claims10
An electromechanical actuating device for converting an electromechanical actuating signal into a mechanical output actuating value for a vehicle, said apparatus comprising
- two mutually independent control loops, each control loop comprising a controller, an actuating motor driven by the controller, a self-locking transmission driven by the actuating motor and providing an actuating value of the motor, and a common summing transmission which is driven by the self-locking transmissions and superimposes the actuating values of the actuating motors to form a mechanical output actuating value,
- a comparator controller which monitors the control loops, and
- interfaces between the comparator controller and each of the controllers of the control loops, and between the control loops, the control loops being electrically isolated from each other.
Dependencies are inferred from the claim text.