-
81.发明授权
公开(公告)号：US5440922A
公开(公告)日：1995-08-15
申请号：US126609
申请日：1993-09-27
申请人： Akira Ichikawa
发明人： Akira Ichikawa
CPC分类号： G01M15/11
摘要： An apparatus for detecting a misfire in an internal combustion engine includes a rotational signal outputting unit for outputting a rotational signal corresponding to a rotational position of the engine, an average rotational angular speed computing unit for computing an average rotational angular speed of the engine based on the rotational signal, a deviation computing unit for computing a deviation of a computation result of the average rotational angular speed computing unit at every predetermined rotational position, and a misfire determining unit for determining occurrence of a misfire based on a pattern of the relative magnitude of three consecutive values of the deviations obtained at every predetermined rotational position. Further, the misfire determining unit may use a difference of the deviation, which is computed separately, in place of the deviation itself.
摘要翻译： 一种用于检测内燃机失火的装置，包括：旋转信号输出单元，用于输出与发动机的旋转位置对应的旋转信号;平均旋转角速度计算单元，用于计算发动机的平均旋转角速度，基于 旋转信号，用于计算平均旋转角速度计算单元在每个预定旋转位置处的计算结果的偏差的偏差计算单元，以及用于基于相对值的模式来确定失火发生的失火判定单元 在每个预定旋转位置获得的三个连续的偏差值。 此外，失火判定单元可以使用单独计算的偏差的差来代替偏差本身。
-
公开(公告)号：US5119424A
公开(公告)日：1992-06-02
申请号：US282497
申请日：1988-12-12
CPC分类号： G10L19/10
摘要： A speech signal is analyzed for each frame so that it is separated into spectral envelope information and excitation information, and the excitation information is expressed by a plurality of pulses. Judgement is conducted as to whether the current frame is a voiced frame immediately after the transition from an unvoiced frame, a voiced frame continuative from a voiced frame or an unvoiced frame, and excitation pulses are generated in accordance with the judgement result. In case of a continuing voiced frame, the excitation pulse position of the current voiced frame is determined based on the pitch period with respect to the excitation pulse position of the immediately preceding voiced frame so that the excitation pulse train is generated at a position approximated to the determined position.
摘要翻译： 针对每个帧分析语音信号，使其被分离为频谱包络信息和激励信息，并且激励信息由多个脉冲表示。 进行关于当前帧是否是从无声帧过渡之后的有声帧，从有声帧或无声帧连续的有声帧，以及根据判断结果生成激励脉冲的判断。 在连续有声帧的情况下，基于相对于紧接在前的有声帧的激励脉冲位置的音调周期来确定当前有声帧的激励脉冲位置，使得激励脉冲串在近似于 确定的位置。
-
公开(公告)号：US5077798A
公开(公告)日：1991-12-31
申请号：US412987
申请日：1989-09-26
IPC分类号： G06T9/00 , G10L19/038 , H03M7/30
CPC分类号： G10L19/038 , G06T9/008 , H03M7/3082 , Y10S706/90
摘要： A system for voice coding based on vector quantization has an apparatus in which a distribution area of parameters representative of a voice is divided into a plurality of domains so that one vector (code vector) may correspond to one domain, an apparatus for representing individual code vectors by codes specific thereto, an apparatus for converting an input voice into a vector and determining membership functions by numerically expressing the distance between the nearest code vector and each of the predetermined number of neighboring vectors, and an apparatus for transmitting, as fuzzy vector quantization information, a code of the nearest code vector and the membership functions.
-
公开(公告)号：US5050554A
公开(公告)日：1991-09-24
申请号：US512455
申请日：1990-04-23
申请人： Akira Ichikawa
发明人： Akira Ichikawa
CPC分类号： F02D41/22 , F02D41/045 , F02P5/1504 , F02P5/1553 , G01M15/11 , F02D2200/1015 , F02D41/1497 , Y02T10/46
摘要： An ignition timing control apparatus for an engine which is capable of accurately estimating an engine speed immediately following the engine coming into an acceleration condition thereby enhancing the accuracy of ignition timing control, and a faulty cylinder detecting apparatus for a multi-cylinder engine using a crank angle sensor which generates a limited number of pulses. The apparatus generates a signal which divides each ignition cycle into a first rotation angular interval where an engine speed variation is large and a second rotation angular interval where an engine speed variation is small. Corresponding first and second rotation time intervals are detected in response to the signal. In accordance with these angular intervals and time intervals, an acceleration correction is effected to estimate a second rotation angular interval in a next ignition cycle. In accordance with the estimated second rotation angular interval in the next ignition cycle, a timing for ignition signal generation is set thereby generating an ignition signal at the timing. A faulty cylinder is detected in accordance with the estimated first rotation time interval and the detected first rotation time interval. A faulty cylinder may be detected in accordance with computed first and second unit rotation time intervals.
摘要翻译： 一种用于发动机的点火正时控制装置，其能够精确地估计发动机处于加速状态之后的发动机转速，从而提高点火正时控制的精度，以及用于使用曲柄的多气缸发动机的故障气缸检测装置 角度传感器产生有限数量的脉冲。 该装置产生将每个点火循环分成发动机转速变化大的第一旋转角度间隔和发动机转速变化小的第二旋转角度间隔的信号。 响应于该信号检测相应的第一和第二旋转时间间隔。 根据这些角度间隔和时间间隔，进行加速度校正以估计下一个点火循环中的第二旋转角度间隔。 根据下一个点火周期中的估计的第二旋转角度间隔，设定点火信号产生的定时，从而在该定时产生点火信号。 根据估计的第一旋转时间间隔和检测到的第一旋转时间间隔检测故障圆筒。 可以根据计算出的第一和第二单位旋转时间间隔检测故障的气缸。
-
公开(公告)号：US4963865A
公开(公告)日：1990-10-16
申请号：US25848
申请日：1987-03-16
CPC分类号： G01C21/367 , G09B29/106
摘要： There is disclosed an apparatus for displaying a travel path of a running body in which a constantly changing location of the running body on a two-dimensional coordinates is successively computed and the current location of said running body is displayed successively, in accordance with the data thus computed, on a display screen having a map previously displayed thereon. According to this apparatus, longitude and latitude values of a reference point in a mesh consisting of lines of longitude and latitude in each map of divided areas are registered as known factors and the current location of the running body on the two-dimensional coordinates thus computed is converted to a location on longitude-latitude coordinates, whereby the current location on the map is calculated from the known longitude and latitude values of the reference point displayed on the display screen.
-
公开(公告)号：US4776015A
公开(公告)日：1988-10-04
申请号：US804938
申请日：1985-12-05
申请人： Shoichi Takeda , Akira Ichikawa , Yoshiaki Asakawa
发明人： Shoichi Takeda , Akira Ichikawa , Yoshiaki Asakawa
CPC分类号： G10L19/10
摘要： Herein disclosed is a speech analysis-synthesis apparatus which resorts to a multi-pulse exciting method using a plurality of modeled pulses as a synthetic sound source if input speech is analyzed so that speech may be synthesized on the basis of the analyzed result. A factor for effecting perpetual weighting in a manner to correspond to the sound source pulse number is made variable, and the error between the input speech and the synthesized speech is perceptually weighted so that the amplitude and location of the train of the sound source pulses are so determined as to minimize said error.
摘要翻译： 这里公开了一种语音分析合成装置，如果分析输入语音，则使用多个建模脉冲作为合成声源的多脉冲激励方法，以便可以基于分析结果来合成语音。 以与声源脉冲数对应的方式进行永久加权的因素变为可变，并且输入语音和合成语音之间的误差被感知加权，使得声源脉冲的列的幅度和位置为 所以确定为最小化所述错误。
-
公开(公告)号：US4340781A
公开(公告)日：1982-07-20
申请号：US145148
申请日：1980-04-30
CPC分类号： G10L25/00
摘要： Computation of the partial correlation coefficients (PARCOR K.sub.i) of a signal, using less cascaded hardware, is implemented by first deriving a sequence of auto-correlation coefficients (v.sub.j) which are then transformed into a sequence of K.sub.i using a single section digital filter plus recirculating circuitry for data iteration.
摘要翻译： 通过首先导出自相关系数序列（vj）来实现信号的部分相关系数（PARCOR Ki）的使用较少级联硬件的计算，然后使用单个部分数字滤波器加上变换为Ki序列 用于数据迭代的循环电路。
-
公开(公告)号：US4211897A
公开(公告)日：1980-07-08
申请号：US942557
申请日：1978-09-15
申请人： Akira Ichikawa , Kazuo Nakata , Kazuhito Hirose
发明人： Akira Ichikawa , Kazuo Nakata , Kazuhito Hirose
CPC分类号： H04Q1/4575
摘要： A multifrequency signal receiving system comprising a filter for whitening a received signal, a correlator for extracting partial autocorrelation coefficients from the output of the whitening filter, a prediction error analyzer for judging the presence or absence of the multifrequency signal by analyzing prediction analysis errors from the output of the whitening filter, and a control unit responsive to the output of the analyzer indicative of the presence of the multifrequency signal for determining the frequency included in the received signal using the partial autocorrelation coefficients thereby identifying that the received signal is the multifrequency signal.
摘要翻译： 一种多频信号接收系统，包括用于白化接收信号的滤波器，用于从白化滤波器的输出中提取部分自相关系数的相关器;预测误差分析器，用于通过分析预测分析误差来判断多频信号的存在或不存在 白化滤波器的输出，以及控制单元，响应于分析器的输出，指示存在用于使用部分自相关系数确定包含在接收信号中的频率的多频信号，从而识别接收信号是多频信号。
-
-
-
-
-
-
-
搜索结果
88 条记录 (耗时 0.022 秒)