Abstract: Disclosed herein is a method for determining if icing has occurred on a surface of an aircraft, the method comprising: heating a surface of an air craft, after the heating has stopped, measuring the temperature of the surface as it cools, and determining if icing has occurred on the surface in dependence on the measured temperature. Advantageously, embodiments provide improved techniques for the detection of icing and the prevention, or mitigation, of icing when it has formed. Embodiments are particularly advantageous when implemented on small UAVs in civilian applications for which autonomous and energy efficient operation is particularly important.

Abstract: Disclosed herein is a method for determining if icing has occurred on a surface of an aircraft, the method comprising: heating a surface of an air craft, after the heating has stopped, measuring the temperature of the surface as it cools, and determining if icing has occurred on the surface in dependence on the measured temperature. Advantageously, embodiments provide improved techniques for the detection of icing and the prevention, or mitigation, of icing when it has formed. Embodiments are particularly advantageous when implemented on small UAVs in civilian applications for which autonomous and energy efficient operation is particularly important.

Abstract: A system for testing a vessel control system includes sensors on board the vessel to send one or more sensor signals over a signal line to the control system; command input devices on board the vessel to send one or more of desired position, course, velocity, etc. over a command signal line to the control system; an algorithm in the control system to compute control signals to based on sensor data, communication lines for sending of one or more simulated signals and/or simulated command signals from a remote test laboratory to the control system; and a simulator including an algorithm for the simulation of the new dynamic state of a vessel model based on a previous state, the control signals, and the dynamic parameters of the vessel. The control system continues to compute the control signals to achieve at least one of desired position, course, velocity, etc. based on real and/or simulated sensor signals and real and/or simulated command signals.

Abstract: A system for testing whether a control system (2) is capable of detection and handling of faults, failures or failure modes (8) in a petroleum process plant (1), said control system (2) arranged for being connected with input signal lines (30) for receiving sensor and other input signals (30) from said petroleum process plant (1), and connected with control signals lines (40) for transmitting control signals (4) to said petroleum process plant (1), comprising the following features said control system (2) arranged for receiving simulated sensor signals or other input signals (3s) from a simulated petroleum process plant (10) over said input signal line (30), said control system (2) arranged for transmitting control signals (4) to said petroleum process plant simulator (10) over said control signal line (40), The novel and inventive of the invention comprises the following features: an input signal modifier (9) arranged for being connected to said input signal line (30), said input signal modifier (9)

Abstract: A system for testing a control system (2) in a vessel (4), in which the control system (2) is arranged to control and monitor the vessel (4), comprising the following features: one or more sensors (8) on board the vessel (4) to send one or more sensor signals (7) over a signal line (12) to the control system (2); command input devices (10) on board the vessel (4) arranged to send one or more of desired position, course, velocity, (9) etc.

Abstract: A method for testing a marine vessel (0) control system (2), said system (2) receiving real measurement signals (7) from sensors (8) and providing control signals (13) to actuators (16, 17, 18), characterized in connecting a signal modifying computer (80) and receiving one or more of said real measurement signals (7), said signal modifying computer (80) modifying said real measurement signals (7) into modified measurement signals (70) that depend on the real value of said real measurement signals (7); said signal modifying computer (80) sending said modified measurement signals (70) to said control system (2), said one or more modified measurement signal (70) input replacing some or all of said real measurement signal (8) input; said control system (2) acting upon said one or more modified measurement signals (70) and remaining unaffected real measurement signals (7); for testing whether said control system (2) acts in a desired way on errors represented by said modified measurement signal (70) imagined

Abstract: The invention relates to a method for testing a control system (5) of a marine vessel (0). The control system (5) receives input commands (51) like desired position, heading, and speed from an input command device (50). The control system sends control signals (6, 62) to actuators (3). Such actuators may be electrical thruster drive motors (32) for thrusters (31) and electrical propeller motors (35) for fixed-shaft propellers (34). The vessel (0) comprises sensors (8) like position reference sensors (81, 82, . . . ) providing sensor signals (7, 71, 72, . . . ) back to said control system (5). The actuators (3) receive electrical energy provided by an on-board power system (1) that is controlled by a power management system (2).