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    • 74. 发明授权
    • Self-diagnostic method for electrochemical gas sensor and gas detecting device
    • 电化学气体传感器和气体检测装置的自诊断方法
    • US07033482B2
    • 2006-04-25
    • US11025992
    • 2005-01-03
    • Tomohiro Inoue
    • Tomohiro Inoue
    • G01N27/404
    • C12P13/02G01N27/4163G01N27/4175
    • An electrochemical gas sensor is self-diagnosed on the basis of an output waveform that is generated when a power source of said gas sensor is turned on after said power source has been turned off for a short time and an output waveform that is generated when said power source is turned on after said power source has been turned off for a long time. In a normal gas sensor, when the power source is turned on after the power source has been turned off for the short time, a bottom will be generated in the potential of the sensing electrode side, and when the power source is turned on after the power source has been turned off for the long time, a peak will be generated in the potential of the sensing electrode side.A self-diagnosis of the electrochemical gas sensor can be done without pulse power source for self-diagnosis, and the dead time from self-diagnosis until start of detection can be shortened.
    • 电化学气体传感器是基于在所述电源已经短时间关闭之后所述气体传感器的电源被接通时产生的输出波形和当所述电源已经被关闭时产生的输出波形而被自诊断的 在所述电源长时间关闭之后,电源被接通。 在正常的气体传感器中,当在短时间内关闭电源之后电源被接通时,在感测电极侧的电位中将产生一个底部,并且当电源在 电源已经长时间关闭,感应电极侧的电位将产生峰值。 可以进行电化学气体传感器的自诊断,无需脉冲电源进行自我诊断,可以缩短自诊断到检测开始的死区时间。
    • 80. 发明授权
    • Velocity/phase controller for DC servo motor
    • 直流伺服电机的速度/相位控制器
    • US5192902A
    • 1993-03-09
    • US607673
    • 1990-11-01
    • Masao MizumotoKouichirou OuginoTsutomu ShimazakiTomohiro InoueYasuhiro Okada
    • Masao MizumotoKouichirou OuginoTsutomu ShimazakiTomohiro InoueYasuhiro Okada
    • H02P29/00H02P7/292
    • H02P7/293
    • A controller for properly controlling a rotating speed and a rotational phase of a DC servo motor. A velocity correction signal is obtained by comparing a rotation signal detected from the motor rotating at a predetermined rotating speed, and a phase error signal is detected from the rotation detected signal as well. Both the rotating velocity and phase of the motor are corrected by the controller supplying a signal which is a mix of the velocity error signal and the phase error signal. The invention includes: a velocity control circuit including a trigger pulse generation circuit for producing a trigger pulse, in synchronization with a reference clock signal, from a rotation signal detected in response to the rotation of a motor, a counter for counting the reference clock signal and for outputting a count termination signal when a counted value reaches a preset value, and an output circuit for outputting, in response to the trigger pulse and the count termination signal, either a fast signal representing that the motor rotates faster than a predetermined rotating speed or a slow signal representing that the motor rotates slower than the predetermined speed; the invention further includes a phase control circuit for outputting in resones to a phase difference between the reference signal representing that the motor rotates at the predetermined speed and the rotation detection signal, either an advance signal representing that a phase-angle of the motor is advanced with respect to a predetermined value or a delay signal representing that a phase-angle of the motor is retarded with respect to the predetermined value; and a mixer for mixng an output from the velocity control signal circuit and an output from the phase control circuit, whereby the velocity control of the motor is executed prior to the phase control thereof.
    • 用于正确控制直流伺服电动机的转速和转动相位的控制器。 通过比较从以预定旋转速度旋转的马达检测的旋转信号,并且从旋转检测信号检测相位误差信号,可以获得速度校正信号。 电机的旋转速度和相位均由控制器提供一个混合了速度误差信号和相位误差信号的信号来校正。 本发明包括:速度控制电路,包括触发脉冲发生电路,用于根据与电动机的旋转相关的旋转信号产生与基准时钟信号同步的触发脉冲,用于对参考时钟信号进行计数的计数器 并且当计数值达到预设值时用于输出计数终止信号;以及输出电路,用于响应于触发脉冲和计数终止信号,输出表示电动机比预定转速更快的转速的快速信号 或表示电动机转速比预定速度慢的慢信号; 本发明还包括相位控制电路,用于输出表示电机以预定速度旋转的参考信号与旋转检测信号之间的相位差,表示电动机的相位角的提前信号被提前 相对于预定值或延迟信号,其表示相对于所述预定值延迟所述电动机的相位角; 以及用于混合来自速度控制信号电路的输出和来自相位控制电路的输出的混频器,由此在其相位控制之前执行电动机的速度控制。