摘要:
Absolute position data (605) of a machine are determined for respective multiple times (t.1, t.3, t.5, t.8, t.11), and odometry position data of the machine are alsodetermined. A pose graph (661) is generated, wherein edges (672) of the pose graph (661) correspond to the odometry position data, and nodes (671) of the pose graph (661) correspond to the absolute position data (605). The pose graph (661) is optimised to obtain an estimated position. Optionally, the odometry can also be estimated. A driver assistance functionality of the machine, for example a motor vehicle, can be controlled optionally on the basis of the estimated position. For example, the driver assistance functionality can relate to autonomous driving.
摘要:
The invention is intended for conserving energy expended by railway rolling stock, for instance by a locomotive when carrying out train operations and shunting, when trains are run in an automatic mode or in a train operator assistance mode. A method for increasing the efficiency of rolling stock includes the following steps: obtaining the parameters of the rolling stock, including at least the following: speed, coordinates, overhead system voltage, traction engine current voltage, brake line discharging; in addition, determining at least the dependence parameters of an active traction force, braking force, motion resistance force, force of wheel adherence to the rails, and the mass of the rolling stock; then, determining the optimal control to be carried out by traction and braking equipment of railway rolling stock based on the dependence parameters obtained during the previous step; then, transmitting the optimal control, determined during the previous step, to a rolling stock control system for implementation or for displaying to the train operator.
摘要:
A differential odometer includes a left wheel sensor (503) coupled to a left wheel (103), and a right wheel sensor (513) coupled to a right wheel (105). The left wheel sensor (503) provides a left wheel pulse count (505) as the left wheel (103) rotates. A left wheel distance traversed is determined by a product of the left wheel pulse count and a left distance per pulse coefficient. The right wheel sensor (513) provides a right wheel pulse count (515) as the right wheel rotates. A right wheel distance traversed is determined by a product of the right wheel pulse count and a right distance per pulse coefficient. A vehicle heading (601'), and vehicle distance traversed (1201), are determined using the left wheel distance traversed and the right wheel distance traversed. A correction value (901, 1001) is provided corresponding to a measured relationship between the left wheel pulse count and the right wheel pulse count. Then a new left distance per pulse coefficient (1105), corresponding to the provided correction value (901, 1001), and a new right distance per pulse coefficient (1101), corresponding to the provided correction value (901, 1001) are provided. Then the left distance per pulse coefficient (605) is substituted with the new left distance per pulse coefficient (1105), and the right distance per pulse coefficient (609) with the new right distance per pulse coefficient (1101). This substitution causes calibration of the differential odometer, consistent with the provided correction value (901, 1001).
摘要:
Un odomètre différentiel comporte un capteur (503) couplé à une roue gauche (103), et un capteur (513) couplé à une roue droite (105). Le capteur de roue gauche (503) assure un comptage d'impulsions (505) à mesure que la roue gauche (103) tourne. La distance parcourue par la roue gauche est déterminée par le produit du comptage d'impulsions de ladite roue et d'une distance à gauche par coefficient d'impulsion. Le capteur de roue droite (513) assure un comptage d'impulsions (515) à mesure que la roue distale tourne. La distance parcourue par la roue droite est déterminée par le produit du comptage d'impulsions de ladite roue et d'une distance à droite par coefficient d'impulsion. Un cap de véhicule (601') et une distance parcourue (1201) par ce dernier sont déterminés à l'aide de la distance parcourue par la roue gauche et de la distance parcourue par la roue droite. Une valeur de correction (901, 1001) est définie et correspond à une relation mesurée entre le comptage d'impulsions de la roue gauche et celui de la roue droite. Puis sont définies une nouvelle distance à gauche par coefficient d'impulsion (1105), correspondant à la valeur de correction définie (901, 1001), et une nouvelle distance à droite par coefficient d'impulsion (1101), correspondant à la valeur de correction définie (901, 1001). Puis la distance à gauche par coefficient d'impulsion (605) est remplacée par la nouvelle distance à gauche par coefficient d'impulsion (1105), et la distance à droite par coefficient d'impulsion (609) est remplacée par la nouvelle distance à droite par coefficient d'impulsion (1101). Cette substitution entraîne un étalonnage de l'odomètre différentiel, compatible avec la valeur de correction définie (901, 1001).
摘要:
Eine Fahrzeugpositions-Anzeigeeinrichtung mit einem Fahrtweg-Geber, einem Fahrtrichtungs-Geber und einer Recheneinheit, die auf der Grundlage der beiden Geber eine der jeweilien Fahrtroute entsprechende Information ausgibt verwendet als Fahrtweg- und als Fahrtrichtungs-Geber zwei gleichartige Rad-Umdrehungs-Sensoren an den beiden Rädern einer Achse. Ein weiterer Fahrtrichtungs-Geber ist zur Korrektur des mit Hilfe der Rad-Umdrehungs-Sensoren gelieferten Information über die Fahrtrichtung nur kurzzeitig einschaltbar.
摘要:
A page (BASE PAGE) modification method in a printer subsystem of the partial page buffer composing type for generation of distinct copy groups (CG #1, CG #2, CG #3) or versions of a base page. A printer subsystem receives a packet containing a page of characters, coded overlays/elisions (OL #1, OL #2, S #1, S #2) and combining data from an external source. The packet is translated into a linked list of character placement representations for each of the doubly indexed coded characters within the page. Elisions (S #1, S #2) from the page are made by inhibiting the formation of a linked list segment for each character sequence within elision markers set out in the page. In contrast, coded character overlays are appended to the list as addenda. The list governs the placement of characters into a partial page buffer, whose contents are system accessible in row major order.
摘要:
Disclosed is an apparatus generating accurate data regarding the heading of a land vehicle as it travels over terrain having changing conditions. The apparatus includes a "first sensor means, such as a differential odometer, generating data regarding the relative direction of the vehicle: Also included is a second sensor means, such as a flux gate compass, for generating data regarding the absolute direction of the vehicle relative to the earth. The relative directional data and the absolute directional data are combined in a means for generating accurate data regarding the heading of the vehicle. A means for reducing errors reflected in signals generated by the sensors is provided to insure the accuracy of the output.
摘要:
Apparatus and methods for calibrating dynamic parameters of a vehicle navigation system are presented. One method may include determining whether reference position data of a vehicle is available, and measuring composite accelerations of the vehicle. The method may further include generating distance and turn angle data based upon a wheel speed sensors data, computing distance and turn angle errors based upon the independent position data, and associating the distance and turn angle errors with composite accelerations. A second method presented includes calibrating an inertial navigation sensor within a vehicle navigation system. The second method may include determining reference position data and Inertial Navigation System (INS) data, aligning an IMU with the vehicle, and aligning the IMU with an Earth fixed coordinate system. The second method may further include computing the vehicle alignment with respect to a horizontal plane, and determining calibration parameters for distance sensors associated with the vehicle.