Abstract:
Das System besitzt wenigstens zwei Gruppen (7, 8) von opto-elektronischen Abtasteinrichtungen, die zur Erzeugung phasenverschobener Meßsignale (1, 2) entlang einer Meßteilung (5, 5a) verstellbar sind, wobei die Meßsignale (1, 2) einer Vervielfacherschaltung (13) und einer Richtungserkennungsstufe (15) zur Erzeugung von Zähl- bzw. Steuersignalen für einen Vor-Rückwärtszähler (16) mit nachgeordneter Anzeigeeinheit (17) zuführbar sind und der Zählbeginn des Zählers (16) auf vorwählbare Meßteilungsstellen einstellbar ist. Zur Erkennung und Anzeige bzw. Korrektur von Zählfehlern ist eine von den Meßsignalen (1, 2) und den Zählsignalen (3, 3a) beaufschlagte Überwachungsschaltung (14, 20 - 28) vorgesehen, die einen Korrekturzähler (21), einen Sollwertspeicher (22) und einen Vergleicher (23) aufweist, der periodisch den Zählerstand des Korrekturzählers (21) mit dem gespeicherten Sollwert vergleicht und bei Abweichungen Korrektursignale erzeugt.
Abstract:
A method and system for monitoring an output of an electronic processing component (12) and which detects an out-of-range value in the output of the electronic processing component (12) during one time period during which one channel of input channels of a time multiplexer (14) provides an input signal to the electronic processing component. Corrective actions are performed based on the detected out-of-range value. The corrective actions including excluding further multiplexing of signals from the one channel of the input channels.
Abstract:
Provided is a semiconductor device capable of performing fault detection on a circuit executing an AD conversion operation during the AD conversion operation. The semiconductor device includes an analog to digital conversion unit that converts a second analog signal into a first digital signal, in which the second analog signal is obtained by adding a first analog signal and an offset signal with a signal band different from the first analog signal, a signal extraction unit that extracts from the first digital signal a second digital signal corresponding to the signal band of the offset signal, and a fault detection unit that detects a fault in the analog to digital conversion unit based on the second digital signal and a setting value that is set upon generating the offset signal.
Abstract:
A main microcomputer abnormality determination section checks whether or not a voltage value of Vcc based on digital data output from a main microcomputer analog-to-digital converter is equal to or higher than a threshold value to thereby perform abnormality determination for the main microcomputer analog-to-digital converter and Vref. A sub microcomputer abnormality determination section checks whether or not the voltage value of Vcc is equal to or higher than a threshold value based on digital data output from a sub microcomputer analog-to-digital converter to thereby perform abnormality determination for the sub microcomputer analog-to-digital converter and Vref. An abnormality identifying section identifies an abnormality occurring site by using both results of the abnormality determination performed by the main microcomputer abnormality determination section and the sub microcomputer abnormality determination section.
Abstract:
An electronic device includes a frequency variable circuit 15, a filter 16, and an output voltage decision circuit 17. The frequency variable circuit 15 changes the sampling frequency of an analog-digital converter 13. The filter 16 limits the pass band of the output signal of the analog-digital converter 13. The output voltage decision circuit 17 determines the noise level of the output signal of the analog-digital converter 13 after the output signal passes through the filter 16. The electronic device performs self-diagnosis as follows. The frequency variable circuit 15 changes the sampling frequency of the analog-digital converter 13 to a frequency outside of the pass band of the filter 16 so as to change the quantization noise level of the analog-digital converter 13. Then, the output voltage decision circuit 17 determines whether the integral of the quantization noise level is within a predetermined range.
Abstract:
A main microcomputer abnormality determination section checks whether or not a voltage value of Vcc based on digital data output from a main microcomputer analog-to-digital converter is equal to or higher than a threshold value to thereby perform abnormality determination for the main microcomputer analog-to-digital converter and Vref. A sub microcomputer abnormality determination section checks whether or not the voltage value of Vcc is equal to or higher than a threshold value based on digital data output from a sub microcomputer analog-to-digital converter to thereby perform abnormality determination for the sub microcomputer analog-to-digital converter and Vref. An abnormality identifying section identifies an abnormality occurring site by using both results of the abnormality determination performed by the main microcomputer abnormality determination section and the sub microcomputer abnormality determination section.
Abstract:
1. A motor-driven power steering apparatus, comprises a digital converting portion (2) that receives resolver signals from a resolver; an exciting signal generator (3) that generates an exciting signal and supplies said exciting signal to the resolver; a conversion trigger generator (4) that generates a conversion trigger according to said exciting signal; an A/D converter (11) that converts said resolver signals to digital values in response to said conversion trigger; a computing portion (12) that detects a failure by computing a value of electric current in a motor (8), and supplies said current value to said motor having its shaft connected to a controlled object (9) and the resolver; and a motor control apparatus for controlling the controlled obj ect (9) including a steering column and a steering mechanism, wherein a steering force is assisted according to a steering torque detected by a torque sensor (13), the assistance to said steering force is stopped when said steering torque detected by said torque sensor exceeds a predetermined threshold value.
Abstract translation:1.一种电动机动力转向装置,包括从旋转变压器接收分解器信号的数字转换部分(2) 激励信号发生器(3),其产生激励信号并将所述激励信号提供给旋转变压器; 转换触发发生器(4),其根据所述激励信号产生转换触发; A / D转换器(11),其响应于所述转换触发而将所述分解器信号转换成数字值; 计算部分(12),通过计算电动机(8)中的电流值来检测故障,并将所述电流值提供给其轴连接到受控对象(9)和旋转变压器的所述电动机; 以及用于控制包括转向柱和转向机构的受控对象(9)的电动机控制装置,其中根据由转矩传感器(13)检测到的转向转矩来辅助转向力,对所述转向力的帮助是 当由所述转矩传感器检测到的转向转矩超过预定阈值时停止。