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11.发明公开Device for controlling rotational speed of motor 失效Regelvorrichtungfürdie Drehgeschwindigkeit eines Motors。
公开(公告)号：EP0430298A2
公开(公告)日：1991-06-05
申请号：EP90123011.0
申请日：1990-11-30
CPC分类号： H02P7/293
摘要： In a device for controlling the rotational speed of a motor according to the present invention, feedback control of the number of revolutions of the motor is carried out by a speed difference control signal and a phase difference control signal so that the motor is rotated at constant speed. The phase difference which is a basis of the phase difference control signal is found in a control portion (14) in the following manner.
A first time period from the reference time point to the time when the newest detection pulse is outputted is calculated every time a predetermined number of detection pulses are counted by detection pulse counters (131, 133, 134, 136), a second time period from the reference time point to the time when a command pulse, which is assigned an ordinal number equal to the ordinal number of the newest detection pulse, corresponding to the newest detection pulse is outputted is calculated on the basis of the total number of pulses counted by the detection pulse counters in the time period from the reference time point to the time when the newest detection pulse is outputted and the period of the command pulse, and the phase difference between the newest detection pulse and the command pulse corresponding thereto is calculated on the basis of the first time period and the second time period calculated and the period of the command pulse. A phase difference control signal proportional to the phase difference calculated is determined.摘要翻译： 在根据本发明的用于控制电动机的转速的装置中，通过速度差控制信号和相位差控制信号来执行电动机的转数的反馈控制，使得电动机恒定地旋转 速度。 作为相位差控制信号的基础的相位差以下述方式在控制部分（14）中找到。 每当通过检测脉冲计数器（131,133,134,136）对预定数量的检测脉冲进行计数时，计算从参考时间点到输出最新检测脉冲时间的第一时间段，从第 基于根据由最新检测脉冲计数的序数等于最新检测脉冲的序数的命令脉冲输出对应于最新检测脉冲的指令脉冲的基准时间点， 在从基准时间点到输出最新检测脉冲的时间期间的检测脉冲计数器和指令脉冲的周期以及最新的检测脉冲和与其对应的指令脉冲之间的相位差在 计算第一时间段和第二时间段的基准以及指令脉冲的周期。 确定与计算的相位差成比例的相位差控制信号。
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公开(公告)号：EP0424823A3
公开(公告)日：1991-05-08
申请号：EP90120118.6
申请日：1990-10-19
IPC分类号： G01P13/04
CPC分类号： G01P13/04
摘要： The present invention relates to an error detecting unit (3) of a rotational detector (1) for outputting two kinds of pulse signals (A, B) of which frequency according to rotation is equal, having a phase difference, and the error detecting unit (3) can detect an error of the rotational detector (1) without fail. For this reason, the error detecting unit (3) according to the present invention can judge whether or not either edge of upstroke or downstroke of the two kinds of pulse signals (A, B) appear alternately and can detect an error of the corresponding rotational detector (1).
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公开(公告)号：EP0316935A3
公开(公告)日：1990-09-05
申请号：EP88119215.7
申请日：1988-11-18
CPC分类号： G03G15/04 , G03B27/526 , G03G15/0435
摘要： An image forming apparatus comprises a movable optical system (28) for reading an original image, a motor (61) for driving the optical system, a motor driving circuit (70), an encoder (62) which outputs signals responsive to velocities of the motor (61), a control circuit (69) which controls the motor driving circuit (70) such that the optical system (28) starts from a home position and turns at a predetermined point to return again to the home position, and applies braking to the motor (61) when the optical system (28) is stopped at the home position, and a microcomputer for deciding timing to apply braking in response to an output of the encoder. By deciding brake timing in response to the output of the encoder, the optical system can be stopped accurately at the home position even when a moving load is increased abnormally due to stains on component members of a running path (45, 59) for the optical system, or replacement of the optical system (28).
摘要翻译： 一种图像形成设备包括用于读取原始图像的可移动光学系统（28），用于驱动光学系统的电机（61），电机驱动电路（70），编码器（62），其输出响应于 电动机61，控制电动机驱动电路70使得光学系统28从原始位置开始并在预定点转动以再次返回到原始位置的控制电路69， 当光学系统（28）停止在初始位置时，向电动机（61）输出制动信号，微型计算机根据编码器的输出确定施加制动的时间。 通过响应于编码器的输出来决定制动时间，即使由于光学运行路径（45,59）的构件上的污点而导致移动载荷异常增加，光学系统也可以在原位准确停止 系统或光学系统（28）的更换。
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公开(公告)号：EP0316935B1
公开(公告)日：1993-09-08
申请号：EP88119215.7
申请日：1988-11-18
CPC分类号： G03G15/04 , G03B27/526 , G03G15/0435
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16.发明公开Error detecting unit of a rotational detector 失效FehlererkennungseinrichtungfürDrehrichtungsdetektor。
公开(公告)号：EP0424823A2
公开(公告)日：1991-05-02
申请号：EP90120118.6
申请日：1990-10-19
IPC分类号： G01P13/04
CPC分类号： G01P13/04
摘要： The present invention relates to an error detecting unit (3) of a rotational detector (1) for outputting two kinds of pulse signals (A, B) of which frequency according to rotation is equal, having a phase difference, and the error detecting unit (3) can detect an error of the rotational detector (1) without fail. For this reason, the error detecting unit (3) according to the present invention can judge whether or not either edge of upstroke or downstroke of the two kinds of pulse signals (A, B) appear alternately and can detect an error of the corresponding rotational detector (1).
摘要翻译： 本发明涉及一种旋转检测器（1）的误差检测单元（3），用于输出具有相位差的旋转频率相等的两种脉冲信号（A，B），并且误差检测单元 （3）可以毫不费力地检测旋转检测器（1）的误差。 因此，根据本发明的误差检测单元（3）可以判断两种脉冲信号（A，B）的上升沿或下降沿是否交替出现，并且可以检测相应旋转的误差 检测器（1）。
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17.发明公开Method of calculating motor control voltage and motor control device using the method 失效Verfahren zur Berechnung der Regelspannung und Motorregelvorrichtung，死了Verfahren anwendet。
公开(公告)号：EP0409185A2
公开(公告)日：1991-01-23
申请号：EP90113706.7
申请日：1990-07-17
CPC分类号： H02P7/2855 , H02P23/16
摘要： A motor control device carries out feedback control of a motor such that the rotational speed of the motor is equal to the command speed. A control voltage is first calculated as the sum of a first constant times the difference between the command speed and the actual rotational speed, a second constant times the actual rotational speed and a predetermined offset value. The calculated control voltage is corrected on the basis of the phase difference between the command speed and the actual rotational speed and a voltage after the correction is outputted as a motor control voltage. The rotational speed of the motor can be caused to rapidly follow the target speed by adjusting the first and second constants and the offset value whether the command speed is relatively low or high, thereby to make it possible to control the motor at a constant speed.
摘要翻译： 马达控制装置执行马达的反馈控制，使得马达的转速等于指令速度。 首先将控制电压计算为第一常数与指令速度与实际转速之间的差乘以第二常数乘以实际转速和预定偏移值的和。 基于指令速度与实际转速之间的相位差，输出校正后的电压作为电动机控制电压来校正计算出的控制电压。 通过调整第一和第二常数以及偏移值，可以使电机的转速快速地跟随目标速度，无论指令速度是相对低还是高，从而能够以恒定的速度控制电动机。
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18.发明授权
公开(公告)号：EP0168148B1
公开(公告)日：1989-04-12
申请号：EP85303708.3
申请日：1985-05-28
IPC分类号： G03G15/00
CPC分类号： G03G15/751
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