Abstract: Device for measuring the axial position of a piston rod (18) relative to the cylinder housing (10) of a cylinder-piston unit that is actuated by fluid pressure, with structures having elevations or indentations formed in the jacket surface of the piston (18), which elevations or indentations form an axially extending material measure; and with a sensor device (28), which is positioned on the cylinder housing and which scans the structure with sensors that are positioned in the axial direction for the purpose of contact-free positional sensing; and with an abrasion-proof cover by means of which the structure is guided within the cylinder housing (10), where the structures are annular structures (22, 24) that concentrically surround the piston rod (18), and where the cover is a tube (26) that is coaxially slid onto the piston rod (18), and where the annular structures (22, 24) form an absolutely coded material measure.

Abstract: A kit servomotor consists of an electromotor and a rotary encoder. The electromotor has a motor stator (3, 8) and a rotor (1), which is positioned in unsupported fashion in the motor stator. The motor stator (3, 8) and the rotor (1) can be installed on the output end. The rotor (1) is designed as a hollow shaft, at least on its end opposite the end used for installation. The rotary encoder is attached to the electromotor on the end opposite the installation end and has a stator unit (4) and an encoder shaft (5). The stator unit (4) is connected to the motor stator (3, 8). The encoder shaft 5 is connected to the rotor (1) using a coupling that is isogonal with respect to the angle of rotation, but elastic in the radial and axial directions. At its motor end, which is coaxial to the hollow shaft of the rotor (1), the encoder shaft (5) has an outer diameter that is smaller than the inner diameter of the hollow shaft.

Abstract: A feedback system for controlling a servo motor comprising at least one rotary angle sensor (3.2) and at least one rotary speed sensor (3.1), wherein the rotary angle sensor (3.2) supplies a measured rotary angle value (?) to a computer (2), wherein the rotary speed sensor (3.

Abstract: A measurement apparatus (10) for the absolute value determination of lengths or of angles, said apparatus having at least one reading head (14) and a physical scale (12) is provided, which has at least a partial section (18) with a connection (28) for another partial section (18) in a sequential arrangement. In this respect the partial section (18) includes a control unit (30) for the active determination of the position of the reading head (14) proximal to the partial section (18) as well as a storage element (32) in which an own position information of the partial section (18) within the physical scale (12) can be stored.

Abstract: The invention relates to a method for synchronizing a bi-directional transmission of data between a transmitter and a receiver based on the transmission of frames (10) having a predefined bit length, with a predefined first bit length (20) being provided in each frame (10) for the transmission of data from the transmitter to the receiver and a predefined second bit length (30) for the transmission of data from the receiver to the transmitter, with a trigger pulse (40) being sent to the receiver parallel to and independently from the transmission of the data between the transmitter and receiver, which pulse triggers a data collection process at the receiver, wherein the frame (10) has a time slot (50), during which no information is transmitted from the transmitter to the receiver and also not from the receiver to the transmitter, and wherein the trigger pulse (40) is transmitted from the transmitter to the receiver during this time slot (50).

Abstract: A length measurement apparatus (10) is set forth which has a bistable magnetic element (102), an elongated physical scale (200) having a plurality of measurement graduation elements (202) spaced apart from one another as well as a reading head (100) which is movable relative to the physical scale (200) in its longitudinal extent and which includes at least one first reading head magnet (114a) and one second reading head magnet (114b) which are arranged transverse to the longitudinal extent and with opposite polarity to one another.

Abstract: The invention relates to a roller bearing (01), with a revolving bearing component (05) and a stationary bearing component (04), and with a capacitive sensor unit (02). The capacitive sensor unit (04) comprises a pivoted sensor element (08), which is connected to the revolving bearing component (05), and a stationary sensor element (09). The sensor units (08, 09) form a capacitor. At least one of the sensor elements (08, 09) bears a first material measure (14, 16 [sic]), so that a change arises in the capacitance of the capacitor when there is a relative motion in the sensor areas (08, 09). The sensor unit also includes a means for generating a periodic electrostatic field between the sensor plates, and a processing and amplifying electronics unit for evaluating the change in capacitance.

Abstract: An encoder for detecting measured values dependent on the rotation angle of the shaft of a motor includes a rotor, which can be fixed on the shaft, and a stator housing, which can be fixed by a bearing surface on an attachment surface of the motor and has a scanning means for detecting the relative rotational position of rotor and stator. In the mounted state, the rotor is fixed on the shaft and the housing is fixed on the attachment surface in such a way that the rotor and the scanning means have a defined axial distance (h). Additionally for mounting purposes, the encoder is pushed onto the shaft until the housing is held in a mounting auxiliary position with its bearing surface at an axial distance from the attachment surface, the axial distance corresponding to the defined distance (h).

Abstract: A device for measuring the relative position of a material measure (10) and a reading head (12) is described, in which the material measure (10) has an incremental scale (14); in which the incremental scale (14) is non-magnetically scanned at a high resolution by a scanner (16) belonging to the reading head (12); in which the material measure (10) has permanent magnets (18), which are positioned at equidistant intervals in the direction of measurement and which establish continuous and adjoining segments (20) within the incremental scale (14); in which the magnetic field created by the permanent magnets (18) following each other in succession is recorded by at least one magnetic sensor (24) belonging to the reading head (12); in which the magnitude of the recorded magnetic field (22) is used to assign the position of the reading head (12) to a step of the incremental scale (14) within the segment (20) defined by these permanent magnets (18); and in which a Wiegand wire device (26, 28) belonging to the reading

Abstract: The invention relates to a sensor for the determination of the rotational speed of a shaft.

Abstract: Device for measuring the axial position of a piston rod (18) relative to the cylinder housing (10) of a cylinder-piston unit that is actuated by fluid pressure, with structures having elevations or indentations formed in the jacket surface of the piston (18), which elevations or indentations form an axially extending material measure; and with a sensor device (28), which is positioned on the cylinder housing and which scans the structure with sensors that are positioned in the axial direction for the purpose of contact-free positional sensing; and with an abrasion-proof cover by means of which the structure is guided within the cylinder housing (10), where the structures are annular structures (22, 24) that concentrically surround the piston rod (18), and where the cover is a tube (26) that is coaxially slid onto the piston rod (18), and where the annular structures (22, 24) form an absolutely coded material measure.

Abstract: To measure the rotation angle of two objects rotating in relation to each other, a transmitter (12) emits at least two linearly polarized light rays (a, b, d, c, d), whose polarization planes are rotated relative to one another. The light passes through a polarization filter (16), which revolves relative to the transmitter in dependence on the angle of rotation. The intensity of the light rays (a, b, d, c) is modulated in phase-shifted fashion. The intensity of the light that passes through the polarization filter (16) is measured by a receiver (18) and is evaluated as a signal that is dependent on the rotation angle.

Abstract: A device for measuring the relative position of a material measure (10) and a reading head (12) is described, in which the material measure (10) has an incremental scale (14); in which the incremental scale (14) is non-magnetically scanned at a high resolution by a scanner (16) belonging to the reading head (12); in which the material measure (10) has permanent magnets (18), which are positioned at equidistant intervals in the direction of measurement and which establish continuous and adjoining segments (20) within the incremental scale (14); in which the magnetic field created by the permanent magnets (18) following each other in succession is recorded by at least one magnetic sensor (24) belonging to the reading head (12); in which the magnitude of the recorded magnetic field (22) is used to assign the position of the reading head (12) to a step of the incremental scale (14) within the segment (20) defined by these permanent magnets (18); and in which a Wiegand wire device (26, 28) belonging to the reading

Abstract: Disclosed is a position measuring device, comprising: a first and second solid measure and a first and second scanning mechanism, wherein: the first and second solid measure and the first and second scanning mechanism are respectively designed identically but mirrored in a plane including the direction of measurement and perpendicular to the direction that is not measured; the first and second solid measure are mounted in a fixed opposite position in a direction that is not measured; the first and the second scanning mechanism are mounted in a fixed opposite position in the direction that is not measured; and the scanning signals generated by the first and second scanning mechanisms respectively are electronically combined into an output scanning signal.

Abstract: A positioning device for positioning a positioning element has a motor (18) that drives the positioning element (10) and has a measuring device that directly measures the positioning travel of the positioning element for controlling the motor (18). For this, a traction cable (32) is joined to the positioning element and is wound onto a drum (36). For measuring the positioning travel of the positioning element, the rotational position of the drum (36) is measured by means of an encoder (42).

Abstract: A kit servomotor consists of an electromotor and a rotary encoder. The electromotor has a motor stator (3, 8) and a rotor (1), which is positioned in unsupported fashion in the motor stator. The motor stator (3, 8) and the rotor (1) can be installed on the output end. The rotor (1) is designed as a hollow shaft, at least on its end opposite the end used for installation. The rotary encoder is attached to the electromotor on the end opposite the installation end and has a stator unit (4) and an encoder shaft (5). The stator unit (4) is connected to the motor stator (3, 8). The encoder shaft 5 is connected to the rotor (1) using a coupling that is isogonal with respect to the angle of rotation, but elastic in the radial and axial directions. At its motor end, which is coaxial to the hollow shaft of the rotor (1), the encoder shaft (5) has an outer diameter that is smaller than the inner diameter of the hollow shaft.

Abstract: A position measuring system features a position measuring device (1), an interface to transmit the position signals of the position measuring device (1) to an electronic control unit, a microcontroller (2) and a non-volatile memory (3), in which characteristic values of the position measuring system are stored, and from which said values can be read out via the interface. During the operation of the position measuring system the microcontroller (2) records state variables of the position measuring system or of a servo drive, respectively, and stores such variables in the memory (3).

Abstract: A rotary position transducer has a housing, a rotor, which is connected to a drive shaft to be measured and projects into the housing so as to rotate with it and the angular position of which within one revolution is measured, and a multi-turn unit that is mounted in the housing and measures the number of revolutions of the rotor. The multi-turn unit is coupled with the rotor by way of a gear wheel gear mechanism, which has a driving spur wheel (10) connected to the rotor, and a driven spur wheel (12) of the multi-turn unit. In the case of one of the spur wheels (10), the head of every second tooth (16) is shortened up to the reference circle. In the case of the other spur wheel (12), the base of every second gap (18) between teeth is filled up to the reference circle. The spur wheels (10, 12) are helical-geared, wherein the modulus and the helix angle (?) of the helical gearing are determined in such a manner that at least one tooth (16) is always in engagement.

Abstract: A device for measuring the position, path, or rotational angle of an object exhibits a dimensional gauge that is connected to the object and that can be scanned. The dimensional gauge assigns measured values to the object's positional range, and these measured values repeat themselves cyclically in the object's successive positional ranges. The number of the completed measured value cycles is counted by an encoding unit with code disks (3, 4, 5), which exhibit an absolute angular encoding capability (34, 44, 54). The code disks (3, 4 or 4, 5) are arranged in succession and are coupled by a differential gear (21, 30, 40 or 22, 45, 50). The number of completed measured value cycles is determined from the reciprocal angular position of the code disks (3, 4, 5).

Abstract: In a measuring device, the measured data of a data recording component (10) are transmitted to an evaluating component via an output device (12). Parameters of the measuring device are stored in a memory (18). For the purpose of parameterization, parameters from the evaluating component can be stored in the memory (18) over a data cable for transmitting the measured data. To this end, the output device (12) for this data cable (Z) is operated at high impedance.