This encoder comprises: an encoder main circuit that is driven using an encoder main circuit driving voltage supplied from at least one internal power source to generate rotation information of a rotating element; an overvoltage breakdown prevention circuit that generates an abnormality detection unit driving voltage on the basis of a voltage supplied from a main power source; an abnormality detection unit that is driven using the abnormality detection unit driving voltage outputted from the overvoltage breakdown prevention circuit to detect an abnormality related to the internal power source; and a cut-off circuit that cuts off supply of the encoder main circuit driving voltage from the internal power source to the encoder main circuit upon detection by the abnormality detection unit of an abnormality.

A method of operating an intermittently measuring or pulsed incremental position sensor, and a position sensor that has noise detecting circuitry activated during each measurement, triggering corrective measurements as long as the influence of noise is detected. Corrective measurements immediately follow and replace a noise-influenced measurement well before the next scheduled measurement. Noise can be detected as a differential amplifier's common-mode input signal, thus clearly separating the influence of noise from the sensor's differential input signal.

A method includes writing vehicle data parameters (VDPs) into a memory in order of a vehicle outputting the VDPs. The method also includes displaying a first view of a graphical user interface (GUI) on a display. The GUI includes one or more VDP graphs, a graph-axis control, and a first vehicle operating condition (VOC) indicator at the graph-axis control. The method also includes displaying a second view of the GUI on the display in response to a selection of the first VOC indicator. The first and second views include first and second sets of VDP graphs, respectively. The second set of VDP graphs includes VDPs not represented in the first set of VDP graphs. Graph-axis control segments within the graph-axis control in the first and second views cover different portions of the graph-axis control. The graph-axis control segments correspond to different portions of the VDPs written into the memory.

There is provided a light control circuit including a light detector, a frequency detector, an error amplifier, an NMOS driver and a light source. The frequency detector identifies a signal frequency according to detected voltage signals outputted by the light detector and generates a control signal accordingly. The NMOS driver changes a drive current of the light source according to an output of the error amplifier. The error amplifier changes a bandwidth thereof according to the control signal from the frequency detector to regulate a response time of the drive current of the light source.

A rotation angle detection apparatus includes a driving gear, two driven gears, two sensors, and an arithmetic circuit. The two driven gears have different numbers of teeth and each are in mesh with the driving gear. The arithmetic circuit is configured to compute a rotation angle of the driving gear based on the rotation angles of the two driven gears, detected through the two sensors. The arithmetic circuit is configured to, when a relationship between the rotation angles of the two driven gears, detected through the two sensors, is different from the relationship when the rotation angle of the driving gear, computed by the arithmetic circuit, is normal, detect an abnormality in the rotation angle of the driving gear, computed by the arithmetic circuit.

There is provided a light control circuit including a light detector, a frequency detector, an error amplifier, an NMOS driver and a light source. The frequency detector identifies a signal frequency according to detected voltage signals outputted by the light detector and generates a control signal accordingly. The NMOS driver changes a drive current of the light source according to an output of the error amplifier. The error amplifier changes a bandwidth thereof according to the control signal from the frequency detector to regulate a response time of the drive current of the light source.

A capacitive sensor includes a first conductive structure; a second conductive structure movable relative to the first conductive structure in response to an external force acting thereon, wherein the first and the second conductive structures form a first capacitor having a first capacitance that changes with a change in a distance between the first conductive structure and second conductive structure, wherein the first capacitance is representative of the external force; and a diagnostic circuit configured to detect a first leakage current in the capacitive sensor by measuring an first electrical parameter that is affected by the first leakage current and comparing the measured first electrical parameter to a first predetermined error threshold, wherein the diagnostic circuit is further configured to generate a first error signal in response to the measured first electrical parameter being greater than the first predetermined error threshold.

The invention relates to a method for checking a measurement supplied by a sensor (2) of a turbine engine, said method being implemented by a computer (5) of the turbine engine. The method comprises the processing steps of: acquiring a first value of the measurement; comparing an increment with an increment threshold; and transmitting a measurement to be processed to the processing interface (6), said measurement being selected so as to be: equal to the value of an estimation model for the received measurement, if the increment is higher than the increment threshold, or equal to the acquired first value of the measurement if the increment is lower than the increment threshold, the method then comprising additional processing steps.

In a robot including a motor and an encoder for detecting the rotational position of the motor, the controller outputs a speed command indicating the rotational position of the motor and sends commanded-position information indicating the rotational position of the motor according to the speed command to a safety unit for detecting a fault in the encoder. When the controller is holding modified point-of-origin information of the motor and the safety unit is holding the original point-of-origin information, the controller sends commanded-position information generated based on the original point-of-origin information to the safety unit.

Provided is a highly reliable abnormal state determination system that can prevent erroneous determination even in a case where a determination condition for determining an abnormal state in measurement using a sensor cannot be changed. Provided is an abnormal state determination system 100 including: an abnormal state determination unit 40 configured to determine an abnormal state by using a detection signal based on a signal output from a sensor 10; and a specific processing unit 50 configured to, when a predetermined condition is satisfied, perform control processing for adjusting strength of the detection signal before the detection signal is input to the abnormal state determination unit 40.