Hamm Ag

Baumuller Nurnberg Gmbh

Horsch Maschinen Gmbh

Sebastian Villwock

Werner Völkel

Heiko Zatocil

Fritz Kopf

Johannes Pistrol

Andreas Baumann

Matthias Rothmund

Stephan Fritsch

Christian Kagerer

Philipp Pollinger

A soil compactor includes at least one compactor roller, which is free to rotate about an axis of rotation of the roller, with a plurality of roller segments, which follow one another along the direction of the axis of rotation of the roller. In each case, at least one electromotive drive for producing an oscillating torque is assigned to each roller segment.

Soil compactor

A method for determining the compaction state of a subgrade to be compacted using a roller compactor comprising at least one compactor drum having an oscillation-inducing arrangement and rotatable about a drum axis of rotation comprising the following steps: during at least one period of oscillating movement of the compactor drum, repeatedly determining the acceleration of the compactor drum in an first direction, representing a first acceleration value; in association with each first acceleration value, determining an acceleration of the compactor drum in a second direction representing a second acceleration value in order to provide acceleration value pairs, each consisting of a first acceleration value and a second associated acceleration value; and for at least one oscillation period, defining a compaction state value representing the compaction state of the subgrade based upon the period of oscillation determined for said acceleration value pairs.

Method for determining the compaction state of substrate

A method is provided for the correction of a measured value curve by eliminating periodically occurring measurement artifacts. The method includes steps of

Method for the correction of a measured value curve by eliminating periodically occurring measurement artifacts, in particular in a soil compactor

A soil compactor, including at least one compactor roller, which is free to rotate about an axis of rotation of the roller, with a plurality of roller segments, which follow one another along the direction of the axis of rotation of the roller, wherein, in each case, at least one electromotive drive for producing an oscillating torque is assigned to each roller segment.

Device to determine a size of contact representing a contact state between a compactor roller and a substrate to be compacted, encompassing a compactor roller rotatable in at least one acquisition circumference area around a compactor roller axis and at least one contact sensor generating a contact signal, wherein the contact signal indicates a contact start and a contact end of an acquisition circumference area upon the substrate to be compacted.

Device and procedure to determine a size of contact representing the contact state of a compactor roller upon the substrate to be compacted

A method to determine a slip state of the compactor roller of a soil compactor caused by an oscillation motion of a compactor roller, comprising the steps:

Method to determine a slip state of the compactor roller of a soil compactor caused by an oscillation motion of a soil compactor

A device for detection of the motion of a compactor roller () of a soil compactor () rotatable about an axis of rotation (A), where said roller comprises on one inside of a roller mantle () a plurality of motion sensors (a) arranged in the circumferential direction around the axis of rotation (A) and at a spacing from each other and moveable with the roller mantle () around the axis of rotation (A).

Device for detecting the motion of a compactor roller of a soil compactor

A method for the identification without shaft encoder of magnetomechanical characteristic quantities of a three-phase asynchronous comprising: &#x2014;constant voltage impression Uin &#x3b1; axial direction in order to generate a constant magnetic flux; &#x2014;test signal voltage supply Uin &#x3b2; axial direction of the asynchronous motor, whereby the &#x3b1; axial direction remains supplied with constant current; &#x2014;measuring signal current measurement Iin &#x3b2; stator axial direction of the asynchronous motor; &#x2014;identification of mechanical characteristic quantities of the asynchronous motor based on the test signal voltage Uand on the measuring signal current I, whereby the rotor can execute deflection movements. Method can also be used for control of electrical drives. An identification apparatus for the determination of mechanical characteristic quantities of an asynchronous motor and for motor control, whereby the identified characteristic quantities can be used to determine, optimize and monitor a motor control.

Apparatus and method for rotating-sensorless identification of mechanical parameters of a three-phase asynchronous motor

A method for the identification without a shaft encoder of magnetomechanical characteristic quantities, in particular the mass moment of inertia J and the permanent magnetic flux &#x3c8;between rotor and stator of a three-phase synchronous motor, comprising:&#x2014;constant voltage supply Uin the d flux axial direction;&#x2014;test signal voltage supply Uin the q transverse flux axial direction;&#x2014;measuring signal current measuring Iof the q transverse flux axial direction;&#x2014;identification of magnetomechanical characteristic quantities of the synchronous motor on the basis of the test signal voltage Uand of the measuring signal current I; whereby the rotor can execute deflection movements with pre-definable maximal amplitudes. Method use also for control of electrical drives. An identification apparatus for determination of magnetomechanical characteristic quantities () of a synchronous motor () that also relates to a motor control device, whereby the identified characteristic quantities can be used for the determination, optimization and monitoring of a motor control.

Apparatus and method for rotating-sensor-less identification of magneto-mechanical parameters of an AC synchronous motor

Identification without shaft encoder of electrical equivalent circuit parameters of a three-phase asynchronous motor comprising: -standstill position search of the rotor, so that the d flux axial direction of the rotor is aligned opposite the cc axial direction of the stator; -test signal voltage supply Uin the d flux axial direction of the motor whereby the q transverse axial direction remains without current; -measuring signal current Iof the d flux axial direction of the motor; -identification of equivalent circuit parameters of the motor based on the test signal voltage Uand on the measuring signal current Iin the d flux axial direction; whereby the rotor remains torque-free. The method used to control electrical drives. An identification apparatus for a synchronous motor and a motor control device comprising the apparatus, whereby identified equivalent circuit parameters can be used to determine, optimize and monitor a motor control.

Apparatus and method for rotating-sensorless identification of equivalent circuit parameters of an AC synchronous motor

Identification of electrical equivalent circuit parameters () of a three-phase asynchronous motor () without a shaft encoder. The method comprises&#x2014;Assumption of a standstill position of the rotor ();&#x2014;Equidirectional test signal infeed U, Uin &#x3b1; and &#x3b2; in the stator axis direction of the asynchronous motor ();&#x2014;Measuring of a measuring signal I, Iof the &#x3b1; and &#x3b2; axial direction of the asynchronous motor (); and&#x2014;Identification of equivalent circuit parameters of the asynchronous motor () on the basis of the test signal voltages U, Uand of the measuring signal currents I, I; whereby the test signal feed allows the rotor () to remain torque-free. Determination of equivalent circuit parameters () of an asynchronous motor () as well relates to a motor control device (), whereby the identified equivalent circuit parameters () can be used for the determination, optimization and monitoring of a motor control and for control of electrical drives.

Apparatus and method for sensorless identification of rotating electrical equivalent circuit parameters of a three-phase asynchronous motor

A method for automated startup and/or for automated operation of controllers of an electrical drive system with vibrational mechanics with the following steps: (a) determining a preliminary value of at least one parameter; (b) determining a model of the electrical drive system by determination of initially a non-parameterized model through the recording of frequency data during operation of the drive system subject to the utilization of the preliminary value of at least one parameter and the subsequent determination of parameters of the electrical drive system based on the frequency data and subject to optimization of at least one preliminary value of at least one parameter by a numerical optimization method on the basis of the Levenberg-Marquardt algorithm and (c) parameterizing at least one controller of the electrical drive system by at least one of the determined parameters.

Method for the automated startup and/or for the automated operation of controllers of an electrical drive system with vibrational mechanics as well as an associated device

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Pechbrunn, Germany

Sebastian Villwock