Abstract: A rotary encoder includes a stator and a shaft having a bearing configuration arranged in a housing. The shaft is rotatable relative to the housing via the bearing arrangement, and a rotor is attached to the shaft. A strain sensor arrangement, attached to the housing, is adapted to determine a malfunction of the bearing configuration. The housing has a flexible structure that facilitates transmitting forces associated with the bearing configuration to the strain sensor arrangement. The strain sensor arrangement is adapted to detect tension and/or compression associated with the housing, and a malfunction of the bearing configuration is determined based on the detected tension and/or compression.

Abstract: A method for signal error correction of a position signal relating to a relative position of at least one sensor with respect to a reference, includes determining a set of parameter values of a parameterized approximation of a corrected relative position with respect to time based on measurements of the position signal over a duration of at least one period of a periodic signal error of the position signal. The method further includes estimating a first corrected relative position at a first time based on the parameterized approximation using the determined set of parameter values and the first time.

Abstract: A rotary encoder includes a detection device for detecting malfunction of the rotary encoder, a rotor, a stator, a shaft having a bearing configuration, and an axial bushing internally connected to the bearing configuration and rotatably arranged in a housing of the rotary encoder. A spring device is arranged for pre-stressing the bushing and the bearing configuration. A distancing arrangement is arranged to change an axial distance between the rotor and the stator by rotation of the bushing resulting from malfunction of the bearing configuration and by creating increased distance between the rotor and stator. The increased distance is sufficient to reduce detectability of angular positions of the shaft, as detected by the rotary encoder, to a level below a predetermined threshold.

Abstract: A rotary encoder includes a rotor and a stator. The rotor and the stator are arranged in the rotary encoder such that, when the rotary encoder is arranged on a machine that includes a shaft having a rotation axis, a rotation of the rotor in relation to the stator about the rotation axis of the shaft is allowed, a relative movement between the rotor and the stator along the rotation axis of the shaft is restricted to a predetermined distance, and a movement of the rotor in relation to the shaft along the rotation axis of the shaft is allowed. Additionally, movement of the stator in relation to the machine along the rotation axis of the shaft may be allowed.

Abstract: A rotary encoder includes a rotor, a stator, and a casting compound. The casting compound has a first surface facing the stator. The first surface has a first predetermined shape and is fixed in relation to the stator. The casting compound has a second surface facing away from the stator, the second surface having a second predetermined shape.

Abstract: A rotary encoder includes a rotor and a stator. The rotor and the stator are arranged in the rotary encoder such that, when the rotary encoder is arranged on a machine that includes a shaft having a rotation axis, a rotation of the rotor in relation to the stator about the rotation axis of the shaft is allowed, a relative movement between the rotor and the stator along the rotation axis of the shaft is restricted to a predetermined distance, and a movement of the rotor in relation to the shaft along the rotation axis of the shaft is allowed. Additionally, movement of the stator in relation to the machine along the rotation axis of the shaft may be allowed.

Abstract: A sensor head for an encoder assembly includes a housing and at least two detectors. The sensor head is intended for scanning directly toward a rotatable encoding member positioned on a carrier ring. The carrier ring is intended to be installed on a shaft of a machine. The detectors are arranged on detector strips are displaceably attached to the housing.

Abstract: An encoder device for optical detection of movement or position includes a first terminal for delivery of an electric measurement code signal. The encoder device further includes a first printed circuit board, a detector mounted on the first printed circuit board, and a code device provided with a pattern. The detector and the code device are displaceable relative to each other, wherein the detector is adapted to generate the electric measurement code signal in dependence on the relative displacement. The detector includes at least one light-sensitive semiconductor chip having a first light-sensitive chip surface and a second chip surface on opposing sides. The first light-sensitive chip surface has a first chip contact area for an electrical connection.

Abstract: An encoder is configured for detection of rotational movement of a rotatable shaft in relation to a part of a machine, and a method is provided for generating a reference signal by an encoder.

Abstract: A carrier ring for an encoder assembly includes a suspension device with resilient members. The encoder assembly includes a sensing device, such as a sensor head, for scanning directly toward a rotatable encoding member positioned on the carrier ring. The carrier ring is intended to be installed on a shaft of a machine.

Abstract: An encoder is configured for detection of rotational movement of a rotatable shaft in relation to a part of a machine, and a method is provided for generating a reference signal by an encoder.

Abstract: A method and an encoder are adapted to determine one or more parameters, each parameter being related to a type of vibration for the encoder. The encoder is mounted on an axis and arranged to detect rotary movement of the axis.

Abstract: A method of establishing a state of an encoder, and an encoder having a state assessment device that includes the steps of generating at least one analogue signal whose amplitude is changed in response to movement between an encoding disc and a detector, generating at least one pulse signal on the basis of the analogue signal by a comparator device, and assessing the amplitude of the analogue signal. The method further includes generating a first status signal on the basis of the amplitude assessment, and generating a second status signal on the basis of one or more of the pulse signals.