-
公开(公告)号：US4980617A
公开(公告)日：1990-12-25
申请号：US310197
申请日：1989-02-14
申请人： Fumio Tajima , Hiroshi Katayama , Tunehiro Endo , Kunio Miyashita , Seiichi Narushima , Jun Ohya , Kouchi Saito
发明人： Fumio Tajima , Hiroshi Katayama , Tunehiro Endo , Kunio Miyashita , Seiichi Narushima , Jun Ohya , Kouchi Saito
摘要： A speed control apparatus is provided for controlling a speed of a movable equipment in such a way that the speed of the movable equipment is detected, calculates a deviation value between a detected speed of the movable equipment and a speed instruction signal, and controls the speed of the movable equipment based on the deviation value. The speed control equipment detects harmonic wave components included in the detected speed and reduces the harmonic wave components from the speed instruction signal so as to control the speed of the movable equipment.
摘要翻译： 提供一种速度控制装置，用于以可检测的可移动设备的速度来控制可移动设备的速度，计算可移动设备的检测速度与速度指令信号之间的偏差值，并控制速度 基于偏差值的可移动设备。 速度控制设备检测包含在检测速度中的谐波成分，并从速度指令信号中减少谐波分量，以便控制可移动设备的速度。
-
公开(公告)号：US4922175A
公开(公告)日：1990-05-01
申请号：US318688
申请日：1989-03-03
CPC分类号： G01D5/24409
摘要： Disclosed is a position detecting method and apparatus which are suitable for detecting the position of a moving body on the basis of the output of a position detector for generating two-phase periodic waves having a phase difference of a quarter period, the method comprising the steps of: comparing either one of the two-phase periodic waves with a predetermined reference value having hysteresis to thereby obtain a roughly estimated position for every half period of the one periodic wave; analog-to-digital converting the two-phase periodic waves and a zero-cross value for every sampling period to thereby obtain a finely estimated position; and detecting the position of the moving body on the basis of the roughly estimated position and the finely estimated position while correcting an error due to the hysteresis at the starting point of the roughly estimated position, by use of the relationship between the roughly estimated position and the finely estimated position. According to this method/apparatus, continuity between the roughly estimated position and the finely estimated position can be maintained, so that exact and high-resolution position detection can be performed.
摘要翻译： 公开了一种位置检测方法和装置，其适用于根据用于产生具有四分之一周期的相位差的两相周期波的位置检测器的输出来检测移动体的位置，该方法包括步骤 ：将两相周期波中的任一个与具有滞后的预定参考值进行比较，从而获得一个周期波的每半个周期的粗略估计位置; 在每个采样周期对模拟数字转换两相周期波和零交叉值，从而获得精细估计的位置; 并且通过使用粗略估计位置与粗略估计位置之间的关系，在粗略估计位置和精确估计位置的基础上检测移动体的位置，同时校正由于在粗略估计位置的起点处的滞后导致的误差 精细估计的位置。 根据该方法/装置，能够维持粗略估计位置与精细估计位置之间的连续性，从而能够进行精确，高分辨率的位置检测。
-
公开(公告)号：US4855652A
公开(公告)日：1989-08-08
申请号：US147987
申请日：1988-01-25
CPC分类号： H02M1/4225 , H02M5/458 , H02P25/03 , H02P2201/09 , Y02B70/126 , Y10S388/907
摘要： AC power supply is converted to DC by a rectifier circuit. The DC is stepped up by a step-up chopper circuit. The output of the step-up chopper circuit is smoothed by a smoothing circuit. The output of the smoothing circuit is input to an inverter via a current detecting circuit and a voltage detecting circuit. A synchronous motor is connected to the inverter. When the speed of the synchronous motor is judged to be in a high speed region based on the output signal of the voltage detecting circuit, the first speed control apparatus operates the interrupting control of the switching element of the step-up chopper circuit in such a manner that a deviation speed between an instruction speed signal to the motor and the detected speed of the motor reaches to zero. When the duty ratio of the inverter reaches to 100%, that is, when the speed of the motor reaches to a low speed region, the first control speed apparatus controls the switching element of the step-up chopper circuit based on the output signal of the current detecting circuit, and the second control speed apparatus carries out the pulse width modulation control of the inverter in such a manner that a deviation speed signal between an speed instruction signal to the motor and the detected speed of the motor reaches to zero.
摘要翻译： 交流电源由整流电路转换为直流电。 DC由升压斩波电路升压。 升压斩波电路的输出由平滑电路平滑。 平滑电路的输出经由电流检测电路和电压检测电路输入到逆变器。 同步电机连接到变频器。 当基于电压检测电路的输出信号将同步电动机的速度判定为高速区域时，第一速度控制装置对升压斩波电路的开关元件的中断控制进行动作 使得电动机的指令速度信号与电动机的检测速度之间的偏差速度达到零的方式。 当逆变器的占空比达到100％时，即当电机的速度达到低速区时，第一控制速度装置基于输出信号的输出信号控制升压斩波电路的开关元件 电流检测电路和第二控制速度装置以使得与电动机的速度指令信号和电动机的检测速度之间的偏差速度信号达到零的方式执行逆变器的脉宽调制控制。
-
74.发明授权Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements 失效利用具有串联连接的MR元件的桥接电路来磁性检测位置或速度或移动体的装置
公开(公告)号：US4818939A
公开(公告)日：1989-04-04
申请号：US19545
申请日：1987-02-26
IPC分类号： G01B7/00 , G01D5/14 , G01D5/16 , G01D5/18 , G01D5/244 , G01D5/245 , G01P3/487 , G01B7/14 , G01P3/42
CPC分类号： G01D5/145 , G01D5/24438 , G01D5/24476 , G01D5/2451 , G01P3/487
摘要： Magnetic poles are provided continuously with a pitch .lambda. on the peripheral portion of a drum rotated in accordance with a movement of a moving body. A magnetic sensor is provided in opposition to these poles. The sensor is formed of two magnetoresistive element pairs which are spaced from each other at .lambda./6, and the two elements in each pair are arranged in positions spaced from each other at .lambda./2. The two elements in each pair are connected in series to form a bridge circuit. The signals obtained from the nodes of the series-connected elements in the two element pairs are differentially amplified so that third harmonic wave components are eliminated, and a signal having no distortion and representative of the position or speed of the moving body can be obtained.
摘要翻译： 在根据移动体的运动旋转的滚筒的周边部分上连续地设有螺距λ的磁极。 提供与这些极相对的磁传感器。 传感器由两个磁阻元件对形成，它们以λ/ 6彼此间隔开，并且每对中的两个元件被布置在以λ/ 2彼此间隔开的位置。 每对中的两个元件串联连接以形成桥接电路。 从两个元件对中的串联元件的节点获得的信号被差分放大，从而消除了三次谐波分量，并且可以获得没有失真并且代表移动体的位置或速度的信号。
-
75.发明授权Position-detecting sensor for detecting position of a moving object utilizing magnetism 失效位置检测传感器，用于利用磁力检测运动物体的位置
公开(公告)号：US4677377A
公开(公告)日：1987-06-30
申请号：US762824
申请日：1985-08-06
CPC分类号： G01D5/145 , G01B7/003 , G01D5/24485 , G01P3/487
摘要： A position-detecting sensor comprises a magnetic recording medium carried on a moving object and having a signal track recording a magnetic signal, a first MR element disposed nearby the magnetic recording medium and varying its internal resistance by sensing the magnetism of the magnetic recording medium, and a magnetic sensor electrically picking up resistance variation of the MR element and detecting the magnetic signal of the magnetic recording medium. In the position-detecting sensor, the present invention is arranged by providing a second magnetic signal track on the magnetic recording medium in addition to the signal track, disposing a second MR element nearby the second magnetic signal track. The variation of a gap between the magnetic recording medium and the magnetic sensor is detected as resistance variation of the second MR element. And the detected signal is serviceable as correcting the output picked up by the first MR element.
摘要翻译： 位置检测传感器包括承载在移动物体上并具有记录磁信号的信号轨道的磁记录介质，设置在磁记录介质附近的第一MR元件，并且通过感测磁记录介质的磁性来改变其内阻， 以及磁传感器电拾取MR元件的电阻变化并检测磁记录介质的磁信号。 在位置检测传感器中，除了信号轨道之外，通过在磁记录介质上设置第二磁信号轨道来设置本发明，在第二磁信号轨道附近设置第二MR元件。 检测磁记录介质和磁传感器之间的间隙的变化作为第二MR元件的电阻变化。 并且所检测的信号可用于校正由第一MR元件拾取的输出。
-
公开(公告)号：US4628259A
公开(公告)日：1986-12-09
申请号：US306233
申请日：1981-09-28
CPC分类号： G01D5/145 , G01D5/16 , G01P13/045 , G01P3/487
摘要： The invention discloses a movement detecting device for detecting the movement state of a moving body such as a rotating body, in which a magnetic recording medium on which N and S magnetic poles are alternately recorded at a constant interval is fixed symmetrically with respect to a rotary shaft of a rotating body whose rotation state is to be detected, and an MR element comprising magnet-resistive elements is mounted at a fixed position relative to the magnetic recording medium so that the rotation state of the rotating body can be detected from variation of the values of resistance of the magnet-resistive elements caused by the rotation of the body. N and S poles are recorded on the magnetic recording medium with a small pole pitch P. The magnet-resistive elements are formed to have a width sufficiently smaller than the pole pitch. The magnet-resistive elements constitute a first group and a second group, the magnet-resistive elements of each group being disposed with an interval equal to the pole pitch or half the pole pitch. The magnet-resistive elements are disposed in such a manner that the interval between the groups is deviated from the pole pitch, whereby a circuit comprising these magnet-resistive elements can detect the rotation of the rotating body.
摘要翻译： 本发明公开了一种用于检测诸如旋转体的移动体的运动状态的运动检测装置，其中以一定间隔交替记录N和S磁极的磁记录介质相对于旋转体对称地固定 轴，其旋转状态要被检测，并且包括磁阻元件的MR元件安装在相对于磁记录介质的固定位置处，从而可以根据变化来检测旋转体的旋转状态 由身体的旋转引起的磁阻元件的电阻值。 N极和S极以小的极间距P记录在磁记录介质上。磁阻元件形成为具有足够小于极间距的宽度。 磁阻元件构成第一组和第二组，每组的磁阻元件以等于极间距或极间距的一半的间隔设置。 磁阻元件以这样的方式设置，使得组之间的间隔偏离极间距，由此包括这些磁阻元件的电路可以检测旋转体的旋转。
-
77.发明授权
公开(公告)号：US4599561A
公开(公告)日：1986-07-08
申请号：US432685
申请日：1982-10-04
IPC分类号： G01D5/249 , G01B7/00 , G01B7/30 , G01D5/14 , G01D5/16 , G01D5/245 , H02K29/08 , G01B7/14 , H01L43/08
摘要： An encoder with a position detecting device is disclosed which is applicable to a brushless motor or the like, and includes a rotating body provided on a surface thereof with a magnetic material and magnetoresistive elements disposed opposite to and in close proximity to said magnetic material. The rotating body is provided with an encoding track in which a magnetic signal has been recorded in a predetermined direction of magnetization, and a position detecting track in which a magnetic signal has been recorded in a direction of magnetization intersecting with the predetermined direction of magnetization. The magnetoresistive elements are formed on an insulating substrate and face the tracks. Further, the magnetoresistive elements are arranged side by side in a radial direction of the rotating body and each of the magnetoresistive elements is placed so that the magnetoresistive element intersects the direction of magnetization in a track facing the magnetoresistive element, to make small the magnetoresistive element supporting substrate, thereby making the whole of the encoder small in size, and to prevent magnetic interference between the encoding track and position detecting track, thereby enhancing the performance of the encoder with the position detecting device.
摘要翻译： 公开了一种具有位置检测装置的编码器，其可应用于无刷电动机等，并且包括在其表面上设置有磁性材料的旋转体和与所述磁性材料相对并且紧邻设置的磁阻元件。 旋转体设置有编码轨道，其中磁信号已经沿预定的磁化方向记录，并且其中磁信号已经沿着与预定磁化方向相交的磁化方向记录的位置检测轨迹。 磁阻元件形成在绝缘基板上并面向轨道。 此外，磁阻元件沿着旋转体的径向方向并排布置，并且每个磁阻元件被放置成使得磁阻元件与面向磁阻元件的轨道中的磁化方向相交，以使磁阻元件小 从而使整个编码器的尺寸小，并且防止编码轨迹和位置检测轨迹之间的磁干扰，从而通过位置检测装置提高编码器的性能。
-
78.发明授权Multi phase magnetic sensor apparatus for detecting the position of moving member 失效用于检测移动部件的位置的多相磁传感器装置
公开(公告)号：US4594548A
公开(公告)日：1986-06-10
申请号：US547259
申请日：1983-10-31
CPC分类号： G01D5/145
摘要： An apparatus for detecting the position of a moving member comprising a moving member having a magnetic substance with magnetical signals recorded thereon, and a stationary magnetic sensor confronting the moving member and having a plurality of magnetoresistive elements, wherein the magnetoresistive elements are disposed in the magnetic sensor such that the elements have a phase difference of .pi./m in electrical angle, where m is an even number larger than or equal to four, for obtaining the positional signal of the moving member.
摘要翻译： 一种用于检测移动构件的位置的装置，包括具有记录有磁信号的磁性物质的移动构件和面对移动构件并具有多个磁阻元件的固定磁传感器，其中磁阻元件设置在磁 传感器，使得元件具有电角度的π/ m的相位差，其中m是大于或等于4的偶数，用于获得移动构件的位置信号。
-
公开(公告)号：US4580084A
公开(公告)日：1986-04-01
申请号：US396877
申请日：1982-07-09
CPC分类号： H02P1/18 , H02P7/04 , Y10S388/90 , Y10S388/906
摘要： A motor speed control method and system allow the motor to be accelerated to the steady state in the minimum time even under conditions of varying load torque, varying load inertia and varying power voltage. The motor is controlled by a voltage including a component of proportional term which is a function of a difference between a command speed and a detected speed, and a component of integral term which is summed during an acceleration phase. The acceleration of the motor during the starting process is measured and the integral term is modified basing on the result. The integral term may be memorized so that it is used as the integral term when the subsequent starting phase is completed. The integral term may be obtained from the acceleration and deceleration in the starting process.
摘要翻译： 电动机速度控制方法和系统允许电动机在最小时间内加速到稳定状态，即使在变化的负载转矩，变化的负载惯量和变化的电力电压的条件下。 电动机由包括作为指令速度和检测速度之间的差的函数的比例项的分量和在加速阶段期间相加的积分项的分量的电压控制。 测量启动过程中电机的加速度，并根据结果对积分项进行修正。 积分项可以被记住，以便当后续的起始阶段完成时被用作积分项。 积分项可以从启动过程中的加速和减速获得。
-
公开(公告)号：US4558265A
公开(公告)日：1985-12-10
申请号：US471434
申请日：1983-03-02
CPC分类号： G05B19/416 , G05B2219/34215 , G05B2219/37388 , G05B2219/41021 , G05B2219/41245 , G05B2219/42237
摘要： A control process and apparatus for positioning an electric motor provided with a rotation angle detector at a designated position positively at a high speed without being accompanied with hunting notwithstanding variation in the motor current and inertia of a load. The control process activated upon starting of the motor and ending at the stoppage of the motor at the designated position includes a first control region in which acceleration of the motor having been started is detected and subsequently a constant speed operation of the motor is effected at a maximum speed. A deceleration initiating time point is determined in dependence on the acceleration. A second control region is provided in which the motor is decelerated in accordance with a deceleration pattern determined in dependence on a rotation angle extending between a position corresponding to the deceleration initiating time point and the commanded stop position, and motor torque and inertia of load is detected at the deceleration initiating time point. During a third control region the motor is progressively decelerated by reducing correspondingly the gain of voltage (current) applied to the motor when the motor position approaches to the commanded stop position. The control process also includes a fourth control region in which, when the motor stops short of or beyond the commanded position, the duty ratio of voltage applied to the motor is progressively increased to thereby re-start the motor toward the commanded position, and a fifth control region in which the motor is held at the commanded stop position.
摘要翻译： 一种用于将设置有旋转角度检测器的电动机定位在指定位置的高速控制处理和装置，而不伴随着电动机电流和负载惯性的变化。 在指定位置启动电动机并停止电动机时启动的控制过程包括检测到起动电动机的加速度的第一控制区域，随后电动机的恒定速度运行在 最大速度。 根据加速度确定减速启动时间点。 提供第二控制区域，其中电动机根据根据与减速起始时间点对应的位置和指令停止位置之间延伸的旋转角度确定的减速度图形减速，电动机转矩和负载惯量为 在减速启动时间点检测。 在第三控制区域期间，当电动机位置接近指令停止位置时，通过相应地减小施加到电动机的电压（电流）的增益，电动机逐渐减速。 控制处理还包括第四控制区域，其中当电动机停止或超过指令位置时，施加到电动机的电压的占空比逐渐增加，从而将电动机重新启动到指令位置，并且 第五控制区域，其中马达保持在指令停止位置。
-
-
-
-
-
-
-
-
-
搜索结果
82 条记录 (耗时 0.024 秒)
