Abstract: A headlight system for a banking vehicle is provided. The headlight system includes a plurality of optical assemblies being arranged about an optical horizon and an optical vertical axis. Each of the plurality of optical assemblies includes an illumination source and an optical element. Each of the illumination sources is configured to direct light toward a corresponding one of the optical elements to produce an illumination region. The illumination regions combine to form an illumination pattern that includes at least one illumination region that is radial and is positioned relative an optical origin. The intersection between the optical horizon and the optical vertical axis defines the optical origin.

Abstract: An open-loop fluxgate-type current sensor is described. The current sensor includes a single winding around a core that combines drive and sense that is used as both an excitation source and a feedback element to measure current through a primary winding. The current sensor further includes an H-bridge driver to impress voltage to the single winding to cause current to saturate the core, the voltage being impressed with opposing polarities repeatedly causing the core to saturate at opposing polarities. The current sensor further includes an analog transconductance integrator that continuously integrates the current to infer magnetizing force being driven into the core at the opposing polarities. The current sensor further includes a microcontroller unit (MCU) that calculates residual current based on the inferred magnetizing force being driven into the core at the opposing polarities and cause remedial action to be taken when the calculated residual current exceeds a threshold.

Abstract: The present disclosure provides a system and method for detecting a resolver signal of a motor allowing accurate detection of a peak magnitude, a peak time, a peak point, etc. of a resolver output signal. A bandpass filter and a moving average processor are configured to remove noise introduced into the resolver output signal and maintain a magnitude of the resolver output signal at original magnitude without change. A phase compensation process performed by a lead phase compensator can compensate a phase delay time for the resolver output signal.

Abstract: An absolute encoder configured to, when a rotation range of a measurement target member is limited by a brake mechanism, generate an AB-phase signal and a Z-phase signal for calculating a rotation angle of the measurement target member. The absolute encoder includes a brake mechanism, a plurality of Z-phase-signal-detection-target portions each having a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion, a plurality of AB-phase-signal-detection-target portions each located between a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion that are adjacent to each other in a circumferential direction, to thereby form a plurality of restriction ranges each including at least one of the Z-phase-signal-rise-detection-target portions and at least one of the Z-phase-signal-fall-detection-target portions.

Abstract: Methods and apparatus to guide an unmanned aerial vehicle for recovery thereof are disclosed. A disclosed example apparatus includes a sensor at or proximate a tether line, the sensor to measure at least one parameter of an aircraft while the aircraft is in flight and provide sensor output corresponding to a position of the aircraft, and a transceiver to transmit data corresponding to the position to the aircraft for guiding the aircraft to engage the tether line for recovery of the aircraft or a payload carried by the aircraft.

Abstract: A scanning unit for determining a relative angular position of an angular scale that is rotatable about an axis relative to the scanning unit includes a circuit board and evaluation electronics. A detector assembly is disposed in a manner that enables scanning of the angular scale. A contact carrier encloses electrical contacts for creating a plug-and-socket connection. The contact carrier has an outer wall and is mounted on the circuit board such that the electrical contacts extend in a direction having an axial component. A housing body is provided with an opening having an inner wall. A first elastic element is disposed under radial preload such that the contact carrier is centered with respect to the inner wall of the opening. The circuit board is torsionally rigidly attached to the housing body such that the circuit board is radially spaced therefrom by a first gap.

Abstract: A device for monitoring a shaft coupling coupling a first shaft to a second shaft includes an optical unit comprising a receiving element which is designed to receive an electromagnetic radiation in a form of light, and an error notification element designed for arrangement on and/or within the first shaft and on and/or within the second shaft. The error notification element is designed to notify when the first shaft runs asynchronously with respect to the second shaft.

Abstract: An encoder includes: an optical module that detects angular position information indicating an angular position of a rotating disk within one rotation thereof; a magnetic detecting unit that detects multi-rotation information indicating the number of rotations of the disk; a battery that supplies a power to the magnetic detecting unit when an external power is not supplied to the encoder; and a connector that connects connection terminals of the battery to a substrate to which at least one of the optical module and the magnetic detecting unit is connected, via solders in contact with the connection terminals.

Abstract: A system for flight control configured for use in an electric aircraft includes a sensor configured to capture an input datum. The system includes an inertial measurement unit (IMU) and configured to detect an aircraft angle and an aircraft angle rate. The system includes a flight controller including an outer loop controller configured to receive the input datum from the sensor, receive the aircraft angle from the IMU, and generate a rate setpoint as a function of the input datum. The system includes an inner loop controller configured to receive the aircraft angle rate, receive the rate setpoint from the outer loop controller, and generate a moment datum as a function of the rate setpoint. The system includes a mixer configured to receive the moment datum, map vehicle level control torques, received from the inner loop controller, to actuator output and generate a motor command datum as a function of the torque allocation.

Abstract: Systems and methods for calculating mobility metrics associated to a plurality of wearable sensors in various arrangements comprising a plurality of communicatively-connected sensors comprising inertial measurement units (IMU) attached to connected bodies of a hinge or ball joint in communication with a computing device. Systems and methods for quaternion calculations comprising a first sensor's quaternion output as estimate into another sensor's quaternion calculation to improve the other sensor's quaternion estimate and vice versa. Systems and methods for data synchronization of a plurality of sensors involving building an external reference time vector and interpolating the sensor's data based on the reference time vector. Systems and methods for calculating a sensor's orientation and position based on the inertial measurements captured by the wearable sensors during hinge or ball joint movements to, at least, calculate a joint angle.

Abstract: A method can include receiving sensor data, receiving satellite observations, determining a positioning solution (e.g., PVT solution, PVA solution, kinematic parameters, etc.) based on the sensor data and the satellite observations. A system can include a sensor, a GNSS receiver, and a processor configured to determine a positioning solution based on readings from the sensor and the GNSS receiver.

Abstract: A detection system and detection method for the sensors of a robot. A detection system installs three sensors at the motor side and power output terminal of the robot. A detection unit detects the normal or abnormal state of three sensors to index the abnormal sensor for maintenance, and two normal sensors are selected for keeping the robot safety operation without stop.

Abstract: In various embodiments, methods, systems, and vehicle apparatuses are provided. A method for estimating a Hitch Articulation Angle (HAA) using Ultra-Sonic Sensors (USSs) while ensuring quality detected echo signal performance using plausibility filtering, generating at least one set of USS data based on detecting a set of echo signals generated by a plurality of USSs configured about a vehicle coupled to a trailer; determining based on a set of USS data using a selected set of geometric equations in a plausibility filtering process for an arbitrary frontal shape of the trailer; and generating at least one comparison based on at least one set of USS data estimations to a kinematic model at low speeds for ensuring that results of the kinematic model to the HAA associated with the determined trailer shape is based on a pair of detected echo signals that are deemed to have a higher signal performance.

Abstract: A method including monitoring an amount of angular motion of an electronic device for a movement (e.g., casting motion) of the electronic device and determining that the amount of angular motion for the movement exceeds a threshold. A geographic location and a pointing direction of the electronic device may be determined for the movement. A geographic region may be determined based at least in part on the geographic location and the pointing direction of the electronic device. In some implementations, the geographic region may be determined based on the amount of angular motion for the movement. The geographic region may be used as part of a search query. Places of interest corresponding to the geographic region may be determined and provided for display and selection via a user interface of the electronic device. Selectable transactions for the geographic region may also obtained and presented by the electronic device.

Abstract: A system for flight control configured for use in an electric aircraft includes a sensor configured to capture an input datum. The system includes an inertial measurement unit (IMU) and configured to detect an aircraft angle and an aircraft angle rate. The system includes a flight controller including an outer loop controller configured to receive the input datum from the sensor, receive the aircraft angle from the IMU, and generate a rate setpoint as a function of the input datum. The system includes an inner loop controller configured to receive the aircraft angle rate, receive the rate setpoint from the outer loop controller, and generate a moment datum as a function of the rate setpoint. The system includes a mixer configured to receive the moment datum, perform a torque allocation as a function of the moment datum, and generate a motor command datum as a function of the torque allocation.

Abstract: Methods, apparatuses, and embodiments related to a technique for monitoring construction of a structure. In an example, a robot with a sensor, such as a LIDAR device, enters a building and obtains sensor readings of the building. The sensor data is analyzed and components related to the building are identified. The components are mapped to corresponding components of an architect's three dimensional design of the building, and the installation of the components is checked for accuracy. When a discrepancy above a certain threshold is detected, an error is flagged and project managers are notified. Construction progress updates do not give credit for completed construction that includes an error, resulting in improved accuracy progress updates and corresponding improved accuracy for project schedule and cost estimates.

Abstract: The measuring jig for the rotary machine is a measuring jig for a rotary machine including a casing that extending about an axis, a rotor that is disposed in the casing and extends in an axial direction about the axis, and a plurality of bearings that are disposed at intervals in the axial direction and supports the rotor in the casing. The measuring jig includes a plurality of casing fixing portions that are respectively attachable to and detachable from bearing holding portions to which the bearings are attached in the casing; a main member that extends in the axial direction so as to connect the plurality of casing fixing portions to each other; an arm that extends from the main member in an orthogonal direction orthogonal to the axial direction; and a reference surface that is disposed at a distance from a measurement target part of the casing.

Abstract: Methods and systems monitor and assess brain bioimpedance through the use of an ocular window that assesses dynamic changes in cerebral blood volume (CBV). That ocular window is implemented through an ocular bioimpedance device that, in a non-invasive manner, measures numerous different brain health indicators using the bioimpedance measurements collected through the regions around the eyes. The ocular bioimpedance device may be goggles with localized measurement electrodes that include cathodes and anodes.

Abstract: In a patient simulator in particular premature infant, newborn or infant simulator, comprising a thorax replication, which comprises a chest replication with at least one liftable and lowerable chest element for simulating a lifting and lowering of the thorax, abdominal wall mechanics, which comprise an abdominal wall replication with at least one liftable and lowerable abdominal wall element for simulating a lifting and lowering of the abdominal wall, a lung simulator, an anatomical trachea replication opening out into a cavity, an anatomical oesophagus replication opening out into a cavity and a control unit, the patient simulator includes at least one sensor whose sensor data is transmitted to the control unit to determine whether the ventilation gas supplied to the patient simulator is conducted into the trachea replication or into the oesophagus replication.

Abstract: A handheld mobile device may be configured for use within a cockpit or cabin of an aircraft. The handheld mobile device may include a display and memory that includes an application configured to utilize the display. The handheld mobile device may also include a processor coupled to the memory. The application, via the processor, may be configured to receive aircraft-specific configuration data. The application may also receive, from a tracker module, input data corresponding to blade height and position. The application may additionally receive airframe vibration data from an accelerometer module. The application may further calculate recommendations regarding track and balance. The application may also further output, via the display, the track and balance recommendations.

Abstract: Systems, methods, and computer program products for sinusoidal nulling are provided. Aspects include transmitting, by a controller, an excitation signal to a first sensor, determining, by the controller, a target harmonic based at least on one or more characteristics of the excitation signal, receiving a return signal from the first sensor, sampling the return signal at a first sample rate based on the target harmonic, and adjusting a phase of the sampled return signal to null the target harmonic amplitude to form an adjusted return signal.

Abstract: The disclosed embodiments include a method for automating alignment of image data captured of a three-dimensional (3D) physical structure with a computer model of the 3D physical structure. The method can include obtaining two-dimensional (2D) images of the 3D physical structure undergoing construction, detecting fiducial markers corresponding to control points in the 2D images, and determining a transformation function based on the control points. The method can further include obtaining more 2D images, detecting other fiducial markers, and aligning image data to a computer model by utilizing the transformation function. The method can further include refining an alignment by utilizing a refinement transformation based on 3D physical elements of the 3D physical structure.

Abstract: A system and method for detecting a level of misalignment of a vehicle sensor, such as a radar sensor, compared to a reference sensor also associated with the vehicle. The reference sensor may comprise a different type of sensor, such as an optical sensor, motion sensor, or position sensor. One or more reference sensors may be utilized in detecting a level of misalignment.

Abstract: A device with position detection includes: a first hall element; a second hall element; a differential amplifier configured to generate a subtraction voltage by differentially amplifying a first hall voltage generated by the first hall element and a second hall voltage generated by the second hall element; a summing amplifier configured to generate a sum voltage by summatively amplifying the first and second hall voltages; a comparer configured to compare a reference voltage with the subtraction voltage to generate an error voltage; and a current converter configured to generate a bias current provided to the first and second hall elements, based on the error voltage, wherein the device is configured to detect a position of a detection object based on the sum voltage.

Abstract: An angle sensor generates an angle detection value based on a first and a second detection signal. A correction apparatus performs correction processing for generating a first corrected detection signal by adding a first correction value to the first detection signal and generating a second corrected detection signal by adding a second correction value to the second detection signal. When an angle to be detected varies with a period T and if no correction processing is performed, the angle detection value contains an Nth-order angle error component varying with a period of T/N. Each of the first and second detection signals contains an (N?1)th-order signal error component and an (N+1)th-order signal error component. The order of the first and second correction values is N?1 or N+1.

Abstract: A total pitch deviation measurement device that determines a total pitch deviation of an annular product having at least a magnetic ring. The device providing a frame; a pallet conveyor fixed to the frame and designed to support the rotor positioning bearing unit; a spindle unit mounted in translation compared to the frame along a vertical axis, the spindle unit including a spindle shaft, a motor driving the spindle shaft, and an encoder connected to the spindle shaft; the spindle shaft having a free lower end having a tapered shape that fits into a bore of the annular product; a sensor fixed to the frame that measures a magnetic field signal at a position of the magnetic ring and transmits the signal measured to an control unit that determines the total pitch deviation of the annular product. Also, a method for carrying out the function of the intended device.

Abstract: An inertial measurement device includes a sensing module including a support and a measuring circuit board, a housing containing the sensing module, and one or more damping units arranged between the sensing module and the housing. The support includes a plurality of external surfaces facing away from one another. The measuring circuit board includes a plurality of panels configured to be bent along edges of the support. Each of the plurality of panels includes a front surface that (1) supports one or more electrical components and (2) faces an external surface of the plurality of external surfaces of the support. A gyroscope and an accelerometer are positioned on at least one of the plurality of panels facing a corresponding external surface of the support.

Abstract: A magnetic angle sensor system includes a first magnetic sensor configured to generate a first sensor signal, a second magnetic sensor configured to generate a second sensor signal, and at least one signal processor configured to: generate an angle signal including an angular value corresponding to an orientation of a magnetic field based on the first sensor signal and the second sensor signal; generate a vector length signal comprising a plurality of vector lengths corresponding to the first sensor signal and the second sensor signal; determine a vector length variance between at least two consecutively sampled vector lengths of the plurality of vector lengths; compare the determined vector length variance to a tolerance range defined by at least one of a minimum tolerance threshold and a maximum tolerance threshold; and generate a warning signal on a condition that the determined vector length variance is outside the tolerance range.

Abstract: A clock monitoring circuit and an integrated circuit including the clock monitoring circuit, the clock monitoring circuit including a first duty ratio detector that detects a variation of a duty ratio of a clock signal based on a first upper limit voltage and a first lower limit voltage, a second duty ratio detector that detects a variation of a duty ratio of a monitoring clock signal based on a second upper limit voltage and a second lower limit voltage, and a first frequency detector that detects a frequency variation of the clock signal using the second upper limit voltage and the second lower limit voltage.

Abstract: A method for operating an electric machine for a vehicle. A target torque of the electric machine is regulated during a driving process depending on a detected time-dependent rotational speed of the electric machine. In the process, the detected rotational speed is differentiated by means of a first high-pass filter over time, the detected rotational speed is then differentiated again over time in a limited manner to positive rotational speed values and using a second high-pass filter, and the target torque is regulated depending on the output value of the second high-pass filter.

Abstract: Processing a resolver signal by a microcontroller includes generating, by a carrier signal generator, a carrier signal for output to a resolver; receiving modulated carrier signals from a resolver via hardware that is external to the microcontroller; integrating, by an integrator, respective integrator input signals which are based on the modulated carrier signals, to generate respective envelope signals, wherein a start of an integration window of the integrator is set with respect to a start of the carrier signal; and determining an angular position sensed by the resolver based on the envelope signals.

Abstract: A low-power pointing method and an electronic device are disclosed. In an embodiment, an electronic device includes a first processor configured to receive attitude quaternion data, indicative of an orientation of the electronic device in a 3D-space, generated by a sensor-fusion algorithm from joint processing of an acceleration signal, indicative of acceleration acting on the electronic device along three reference axes of the 3D-space, and of a gyroscope signal, indicative of angular rate of rotation of the electronic device about the three reference axes of the 3D-space, process the quaternion data to determine an orientation difference between a current orientation and a previous orientation of the electronic device in the 3D-space, translate the orientation difference from the quaternion space to a tilt-compensated angular rate of rotation of the electronic device in the 3D-space and generate screen-frame displacement data based on the tilt-compensated angular rate of rotation.

Abstract: A method of tracking a movement of a target by an unmanned aerial vehicle (UAV) includes determining a distance between the target and the UAV, acquiring image data of the target by a camera of the UAV, determining two-dimensional pixel coordinate data associated with a plurality of features of the target from the image data, determining a physical dimension based on the two-dimensional pixel coordinate data and the distance, and determining three-dimensional location coordinate data of the target with respect to the UAV based on the physical dimension and at least one of the two-dimensional pixel coordinate data or the distance.

Abstract: One aspect of the present disclosure relates to a physical training system for injury prevention and rehabilitation. The training system can include a wearable device in communication with an external device, which can be used to train at least the athlete wearing the wearable device. The wearable device can reduce the number of sensors needed to capture motion data required for the training. For example, the wearable device can include an inertial measurement unit (IMU) device located at a position relative to a joint of an athlete to measure an inertial displacement of the joint and an optical sensor to measure an angle of the joint. The wearable device can include a wireless transceiver to communicate a characteristic of motion of the joint (determined based on data from the IMU and the optical sensor) to an external device.

Abstract: A head-up display for a vehicle provides image warping. The head-up display comprises at least one sensor, an image generator, a display unit and a mirror unit. A correction unit is furthermore arranged following the image generator.

Abstract: An accurate position sensor is presented. The sensor operates over 360-degree motion angular motion and includes a coil structure formed on a substrate and a target mounted to be angularly moved over the coil structure, the target being formed of a conducting material in a shape of a spiral of Archimedes. The coil structure includes coils with an arc sufficient to operate over a 360 degree motion of the target, for example between 120 degrees and 360 degrees. Some embodiments include coils with a 180 degree arc. A method of operating the position sensor includes rotating a target formed of a conducting material in a shape of a spiral of Archimedes over a coil structure and providing a linearized and calibrated response indicating the angular position of the target relative to the coil structure.

Abstract: In example implementations, an apparatus includes a plurality of nodes, a pump coupled to the plurality of nodes and a connection network. In one example, each one of the plurality of nodes may store a value. The pump provides energy to the each one of the plurality of nodes. The connection network may include a two dimensional array of elements, wherein each group of the two dimensional array of elements is in communication with a respective one of the plurality of nodes, wherein the connection network may be tuned with parameters associated with encoding of an Ising problem. The connection network may process the value stored in each one of the plurality of nodes. The Ising problem may be solved by the value stored in each one of the plurality of nodes at a minimum energy level.

Abstract: The present invention relates to an inertial measurement apparatus and a mechanical device. The inertial measurement apparatus includes a PCB board and an inertial measurement unit (IMU). The PCB board includes a PCB body portion and an isolation portion that is formed by slotting a side of the PCB board and fixedly connected to the PCB body portion. The IMU is disposed on the isolation portion.

Abstract: The invention relates to a method for operating a rotating electric machine (1) having a rotor (3), a polyphase excitation winding (5) and a commutation apparatus (9) for commutating excitation winding currents of the excitation winding (5) depending on rotor position values (R) for rotor positions of the rotor (3). First measurement values (A) for the rotor positions are detected by means of a first sensor apparatus (13) and second measurement values (B) for the rotor positions are detected by means of a second sensor apparatus (15). For the commutation of the excitation winding currents, the rotor position values (R) are formed from weighted mean values (M) of the first measurement values (A) and the second measurement values (B).

Abstract: Systems and methods for treatment of a spine of a patient. The system includes a treatment device comprising a probe tip at a distal end of the device. The system further includes a display device configured to display information associated with the treatment. The system further includes at least one computing device in electrical communication with the display device and the treatment device. The memory of the computing device includes software for operating a GUI. The at least one computing device configured to display the GUI comprising a virtual representation of: a first skeletal structure; at least one of an organ and a muscle; and a nerve network. The device also configured to display a graphic along a portion of the neural pathways associated with a user selected vertebra of the vertebrae when the treatment device is actuated to deliver the treatment.

Abstract: A rotation angle detection device includes a driving gear rotated integrally with a rotary body, a first driven gear and a second driven gear coupled to the driving gear and rotated in cooperation with the driving gear, a first sensor that detects rotation of the first driven gear and generates a first sensor output, and a second sensor that detects rotation of the second driven gear and generates a second sensor output. An initialization method includes adjusting zero points of the first and second sensor output obtained at positions of rotation references of the first and second driven gears, measuring a deviation amount occurring in a calculation of rotation information of at least one of the first and second driven gears, and correcting the zero point of at least one of the first and second sensor outputs based on the measured deviation amount.

Abstract: The present invention relates to systems and methods for providing location and guidance, and more particularly for providing location and guidance in environments where global position systems (GPS) are unavailable or unreliable (GPS denied and/or degraded environments). The present invention further relates to systems and methods for using inertial measurement units IMUs to provide location and guidance. More particularly, the present invention relates to the use of a series of low-accuracy or low-resolution IMUs, in combination, to provide high-accuracy or high-resolution location and guidance results.

Abstract: The purpose is to accurately and promptly calculate an error of a magnetic sensor. A sensor error calculating device may include a GNSS attitude angle calculating module, a GNSS geomagnetism calculating module, and an error estimating module. The GNSS attitude angle calculating module may calculate a GNSS attitude angle of a movable body based on positioning signals of a GNSS. The GNSS geomagnetism calculating module may calculate a GNSS geomagnetism based on the GNSS attitude angle. The error estimating module may estimate a sensitivity error, a misalignment error and a bias error of the magnetic sensor by using a magnetic detection value of the magnetic sensor and the GNSS geomagnetism.

Abstract: A rotation detecting device includes first and second magnetic detection elements that output first and second signals and a detection circuit having the first and second signals input thereto. The detection circuit includes an automatic correction circuit that performs generating and updating of a correction value for correcting the and second signals. The automatic correction circuit is configured to stop the generating or the updating of the correction value in at least one of a case where a rotation direction of an object is changed to a reverse rotation direction from a normal rotation direction and a case where a rotation direction of the object is changed to the normal rotation direction from the reverse rotation direction.

Abstract: A controlling system and a controlling method for virtual display are provided. The controlling system for virtual display includes a visual line tracking unit, a space forming unit, a hand information capturing unit, a transforming unit and a controlling unit. The visual line tracking unit is used for tracking a visual line of a user. The space forming unit is used for forming a virtual display space according to the visual line. The hand information capturing unit is used for obtaining a hand location of the user's one hand in a real operation space. The transforming unit is used for transforming the hand location to be a cursor location in the virtual display space. The controlling unit is used for controlling the virtual display according to the cursor location.

Abstract: A construction management system for constructing a building including at least one heavy lifting machine for moving a one building element to a mounting position on the building, a central computing unit providing a building information model comprising at least a construction plan comprising a target state of the construction of the building, a three-dimensional model of an actual construction state of the building, and a three-dimensional model of the element, wherein the central computing unit is adapted to determine the mounting position for the element based on the construction plan, the model of the current construction state and on the model of the element.

Abstract: Disclosed herein are electronic devices, and methods for their operation, that identify user inputs based on interaction of an object with input surfaces separate from the electronic devices. The electronic devices may include one or more self-mixing interferometry sensors that scan a field of view containing the input surface with a light beam, such as a laser beam emitted laser diode. Self-mixing of the emitted light with reflections can generate a self-mixing interferometry signal. Analysis of the self-mixing interferometry signal can allow for identification of an object, such as a user's finger, in the field of view. Deformation of the finger can be detected with the self-mixing interferometry sensor, and a user input identified therefrom.

Abstract: An apparatus includes at least one processor or circuit programmed to function as a detection unit that detects a rotational position of a rotor, and a generation unit that generates a driving waveform for a motor based on the detected rotational position. The generation unit includes a phase difference setting unit that sets a phase difference between the rotational position and the driving waveform, a changing time setting unit that sets a changing time, which is a time required for changing the phase difference from a phase difference before the change to a phase difference after the change, in a case where the set phase difference is changed, and a determination unit that determines a phase of the driving waveform based on the phase difference before the change, the phase difference after the change, and the changing time.

Abstract: An inertial measurement system is disclosed. The inertial measurement system has an accelerometer processing unit that generates a calibrated accelerometer data. The inertial measurement system further includes a magnetometer processing unit generates a calibrated magnetometer data, and a gyroscope processing unit generates a calibrated gyroscope data. Using the calibrated accelerometer data, the calibrated magnetometer data, and the calibrated gyroscope data, the inertial measurement system generates a heading angle error indicative of the accuracy of the heading angle error.

Abstract: An example game system includes a main body apparatus and a game controller. The game controller has an analog stick, a memory storing correction parameter information including a first manufacturing process correction parameter value determined in a manufacturing process in connection with the analog stick, a first user correction parameter value determined in accordance with an operation by a user onto the analog stick, and a first model adjustment value corresponding to a model of the game controller, and a first control circuit transmitting the correction parameter information to the main body apparatus. The main body apparatus has a second control circuit which selects any of the first manufacturing process correction parameter value and the first user correction parameter value and performs game processing based on the selected correction parameter value, the first model adjustment value, and input data from the analog stick.