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公开(公告)号：US20030075992A1
公开(公告)日：2003-04-24
申请号：US10041793
申请日：2001-10-19
发明人： Heath Elliot Kouns
IPC分类号： H02J001/00
CPC分类号： G05D3/18 , G02B6/3512 , G02B6/3576 , G02B6/358 , G02B6/359 , H01H2001/0042 , H01H2061/006
摘要： A varying signal, which may be a feedback signal, is combined with a control signal to control the actuators (117 and 119) of a switch. The method compensates for varying temperature conditions as well as variations in the manufacturing process of the actuators (117 and 119) and a member (101) of the switch that is attached to the actuators (117 and 119), which member (101) changes positions to change the state of the switch. The varying signal, in combination with the control signal, determines a pulse width, during which time energy is applied to the actuators (117 and 119).
摘要翻译： 可以是反馈信号的变化信号与控制信号组合以控制开关的致动器（117和119）。 该方法补偿变化的温度条件以及致动器（117和119）的制造过程的变化以及附接到致动器（117和119）的开关的构件（101），该构件（101）变化 改变开关状态的位置。 变化信号与控制信号结合确定脉冲宽度，在此期间能量被施加到致动器（117和119）。
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2.发明授权
公开(公告)号：US5454291A
公开(公告)日：1995-10-03
申请号：US78543
申请日：1993-06-19
申请人： Michael Ulm , Franz-Xaver Lacher
发明人： Michael Ulm , Franz-Xaver Lacher
摘要： An electrohydraulic regulating device, particularly for a motor vehicle rear axle steering assembly, includes an adjusting cylinder. An electrically actuated control valve controls a hydraulic fluid flow to the adjusting cylinder. At least one electrically actuated switching valve blocks or admits a hydraulic fluid flow. A control unit generates control signals for the control valve and the switching valve. A regulating circuit supplies a pulse-width-modulated regulating signal for regulating a mean current of the control valve. A pulse-width-modulated control signal controls a mean current of the switching valve. The same supply voltage is applied to the switching valve and to the control valve. A pulse-duty factor of the control signal for the switching valve is referred to a pulse-duty factor of an adjusting signal for the control valve.
摘要翻译： 电动液压调节装置，特别是用于机动车后桥转向组件，包括调节气缸。 电动控制阀控制到调节气缸的液压流体流。 至少一个电动切换阀阻塞或承认液压流体流。 控制单元产生用于控制阀和切换阀的控制信号。 调节电路提供用于调节控制阀的平均电流的脉冲宽度调制调节信号。 脉冲宽度调制控制信号控制切换阀的平均电流。 向切换阀和控制阀施加相同的电源电压。 切换阀的控制信号的脉冲占空因数称为控制阀的调节信号的脉冲占空因数。
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公开(公告)号：US4813443A
公开(公告)日：1989-03-21
申请号：US178132
申请日：1988-04-06
申请人： Edwin Pounder
发明人： Edwin Pounder
CPC分类号： G05D7/0635 , G05D3/18 , Y10T137/0318 , Y10T137/7737 , Y10T137/7759 , Y10T137/7761
摘要： An improved method for controllably positioning the plunger of a solenoid apparatus at a target position between its two extreme positions. The plunger is spring biased to a retracted position, and an electrical coil is intermittently pulsed to drive the plunger against the spring bias toward an extended position, such that the plunger oscillates about the target position. A precise, stable control of the plunger's oscillating motion about the target position is achieved by continuously measuring the plunger's actual position, in real time, based on a series of measurements of electrical current conducted through the electrical coil when it is being pulsed.
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公开(公告)号：US4625622A
公开(公告)日：1986-12-02
申请号：US765796
申请日：1985-08-15
申请人： Rajamouli Gunda , Melvin A. Rode
发明人： Rajamouli Gunda , Melvin A. Rode
CPC分类号： G05D3/18 , F15B21/087 , G05B19/351 , G05B2219/34215 , G05B2219/34236 , G05B2219/35438 , G05B2219/36429 , G05B2219/37462 , G05B2219/41302 , G05B2219/42237
摘要： A system and method for pulse-width modulation of multiple solenoid-operated valves in an electrohydraulic servo system employing a microprocessor-based digital controller. Solenoid-energization pulse widths are identified by comparison of operator command input signals to feedback signals responsive to actual motion at the actuators and loads. During each modulation period, all solenoids are initially selectively simultaneously energized as a function of binary information stored in an energization control register, and the shortest energization pulse duration is identified. After a delay corresponding to such shortest duration, during which the microprocessor may perform other control functions, the solenoids associated with such shortest duration are selectively de-energized as a function of binary information stored in a de-energization control register. The next-shortest duration is then identified, and the process again delays for a time equal to the difference between such next-shortest duration and the previous duration. The process of identifying pulse durations of increasing length and correspondingly deenergizing the solenoids continues until all pulse durations have been accommodated or until the modulation period terminates, at which point the entire control process rebegins.
摘要翻译： 一种采用基于微处理器的数字控制器的电动液压伺服系统中多个电磁阀的脉宽调制系统和方法。 通过将操作员命令输入信号与响应于执行器和负载处的实际运动的反馈信号进行比较来识别电磁阀通电脉冲宽度。 在每个调制周期期间，根据存储在通电控制寄存器中的二进制信息的函数，所有螺线管最初被选择性地同时通电，并且识别最短的通电脉冲持续时间。 在对应于这样最短持续时间的延迟之后，微处理器可以执行其他控制功能，与这样最短持续时间相关联的螺线管根据存储在断电控制寄存器中的二进制信息的功能被选择性地断电。 然后识别下一个最短的持续时间，并且处理再次延迟等于这样的下一个最短持续时间和先前持续时间之间的差值的时间。 识别增加长度的脉冲持续时间并相应地断电螺线管的过程继续进行，直到所有脉冲持续时间已经被适应或者直到调制周期终止为止，在整个控制过程进行到达时间。
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5.发明授权
公开(公告)号：US4587883A
公开(公告)日：1986-05-13
申请号：US701799
申请日：1985-02-15
摘要： Two magnetic valves, one of which reduces the pressure and the other one of which increases the pressure by which the displacement of a positioning member is controlled, only one of them operated at a time in accordance to the sign of the error signal, are operated in a pulsed mode with variable pulse width when the error signal is within a range of low absolute value and in a continuous mode of operation when the error signal has a higher absolute value. Variation of the magnitude of the error signal within the intermittent valve operation range controls pulse width variation. Hysteresis is provided in a transition between operating modes of a valve by a time delay of the mode change after the error signal has risen or fallen past a threshold value of signal. High displacement resolution is obtained as well as independence from effect of temperature drifts and magnetic valve characteristics.
摘要翻译： 两个电磁阀，其中一个减小了压力，另一个电磁阀增加了定位部件的位移被控制的压力，其中只有一个按照误差信号的符号一次操作， 当误差信号在低绝对值的范围内时，并且当误差信号具有较高的绝对值时，以连续工作模式，以脉冲宽度可变的脉冲模式。 在间歇阀操作范围内的误差信号幅度的变化控制脉冲宽度变化。 在误差信号上升或下降超过信号阈值之后，通过模式改变的时间延迟，在阀的工作模式之间的过渡中提供迟滞。 获得高位移分辨率，并且不受温度漂移和磁阀特性的影响。
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公开(公告)号：US4366743A
公开(公告)日：1983-01-04
申请号：US200870
申请日：1980-10-27
摘要： A control system 54 for a doser type hydraulic actuator 56 is disclosed. The doser actuator includes a pair of unequal area pistons 18, 20 on a common shaft 16 which are moved incrementally by injecting into or removing from a control pressure chamber metered quantities or doses of fluid. The doses are metered by timed openings of solenoid valves 32, 34 connecting the control pressure chambered to a supply 44 or return 48 pressure sources. The control system includes a base pulse width signal generator 106 which pulse modulates the solenoids as a function of the error between a requested position and an actual position. The base pulse width is modified by a correction means 108, 110, 112 when the error is within a predetermined band width. The correcting means compensates for the variations of the actuator when its response is uncertain with respect to the base pulse width.
摘要翻译： 公开了一种用于加料器型液压致动器56的控制系统54。 加料器致动器包括在公共轴16上的一对不相等的活塞18,20，它们通过注入或从控制压力室中移出计量量或剂量的流体来逐渐移动。 剂量由电磁阀32,34的定时开口计量，电磁阀32,34将控制压力连接到电源44或返回48个压力源。 控制系统包括基本脉冲宽度信号发生器106，其根据请求位置和实际位置之间的误差脉冲调制螺线管。 当误差在预定带宽内时，校正装置108,110,112修改基本脉冲宽度。 当其响应相对于基本脉冲宽度不确定时，校正装置补偿致动器的变化。
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公开(公告)号：US4295082A
公开(公告)日：1981-10-13
申请号：US127744
申请日：1980-03-06
申请人： Masato Moto , Seigo Ito
发明人： Masato Moto , Seigo Ito
CPC分类号： G05D1/0206 , G05D3/18 , H02P7/00
摘要： A motor servo circuit is disclosed. The motor in the motor servo circuit is driven by an output which is obtained by logically adding output pulses of a pulse stretcher circuit which stretches a pulse width of error pulses generated from an OR circuit when pulses inputted to the motor servo circuit and pulses outputted from a pulse generator in response to the input pulses are different in the pulse width to pulses having a predetermined pulse width which are generated at intervals of a predetermined member of the error pulses synchronizing therewith.
摘要翻译： 公开了一种电动机伺服电路。 马达伺服电路中的马达由输出驱动，该输出通过逻辑地加上脉冲拉伸器电路的输出脉冲而获得，该脉冲拉伸电路在输入到马达伺服电路的脉冲和从马达伺服电路输出的脉冲中延伸由或电路产生的误差脉冲的脉冲宽度 响应于输入脉冲的脉冲发生器在脉冲宽度上与具有与其同步的误差脉冲的预定成员的间隔产生的具有预定脉冲宽度的脉冲是不同的。
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公开(公告)号：US4232259A
公开(公告)日：1980-11-04
申请号：US864817
申请日：1977-12-27
申请人： Nobuo Kaieda , Yoshihiro Okano
发明人： Nobuo Kaieda , Yoshihiro Okano
摘要： A servo-system includes a high-gain direct-coupled direct current (dc) differential amplifier to which a dc input signal is fed. An adder adds the dc amplifier output to a comparison voltage, and the adder output is applied through a filter circuit to a second input of the differential dc amplifier. A servo-amplifier drives a servo-motor in accordance with the dc amplifier output. Means are provided for zero-balancing the dc amplifier output while varying the comparison voltage by the servo-motor.
摘要翻译： 伺服系统包括直流输入信号被馈送到的高增益直流耦合直流（dc）差分放大器。 加法器将直流放大器输出加到比较电压，加法器输出通过滤波电路施加到差分直流放大器的第二输入。 伺服放大器根据直流放大器输出驱动伺服电机。 提供了通过伺服电机改变比较电压来平衡直流放大器输出的装置。
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公开(公告)号：US4147968A
公开(公告)日：1979-04-03
申请号：US836662
申请日：1977-09-26
申请人： William M. Goble
发明人： William M. Goble
CPC分类号： G05D3/18
摘要： A stepper motor control system is described for positioning a mechanical element connected to a stepper motor which includes an electric analog signal producing system connected to a stepper motor with a variable speed mode of driving the motor and which includes a power saver circuit for electrical de-energization of the motor when not in use.
摘要翻译： 描述了一种步进电动机控制系统，用于定位连接到步进电动机的机械元件，该机械元件包括连接到具有驱动电动机的可变速度模式的步进电动机的电模拟信号产生系统，并且包括用于电去耦的节电电路， 不使用时电机通电。
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公开(公告)号：US4006391A
公开(公告)日：1977-02-01
申请号：US535149
申请日：1974-12-20
CPC分类号： G05D3/18
摘要： A typical alternating current two phase servomotor has two windings displaced 90.degree.; these windings are normally identified as the reference winding and the control winding. Rotational direction and speed of the motor may be controlled by applying AC voltages of the proper waveform amplitude and phase relationship to these windings. When controlling the direction of rotation and speed of such alternating current servomotors in accordance with a DC error signal, pulse width modulation is utilized. The DC error signal is compared with a periodic varying function and its inverse to generate a series of pulses that are logically combined with a square wave and its complement during an enable period to generate a first and second series of pulses each having a width related to the magnitude of the error signal and coupled to energize the control winding of the alternating current servomotor. Similarly, a second periodic signal and its inverse are used to generate pulses for the reference winding. The second periodic signal is displaced 180.degree. in phase from the first periodic signal used for the control winding above. The DC error signal is compared with the second periodic function and its inverse to generate a second series of pulses each having a width related to the magnitude of the error signal. The second series of pulses is logically combined with a square wave and its complement during an enable period to produce output pulses to the reference winding. The motor energizing signals control a power switching amplifier connected to the respective windings of the motor to be controlled and responsive to the appropriate pulse width modulated signals.
摘要翻译： 典型的交流二相伺服电机有两个绕组位移90°; 这些绕组通常被标识为参考绕组和控制绕组。 电动机的转动方向和速度可以通过对这些绕组施加适当的波形幅度和相位关系的交流电压来控制。 当根据DC误差信号控制这种交流伺服电机的旋转方向和速度时，利用脉宽调制。 将DC误差信号与周期性变化函数进行比较，并将其反相生成在使能周期期间与方波及其补码逻辑组合的一系列脉冲，以产生第一和第二系列脉冲，每个脉冲具有与 误差信号的大小并耦合以使交流伺服电动机的控制绕组通电。 类似地，使用第二周期信号及其反相来产生用于参考绕组的脉冲。 第二个周期信号与上述控制绕组使用的第一个周期信号相位偏移180°。 将DC误差信号与第二周期函数及其逆相比较以产生每个具有与误差信号的幅度有关的宽度的第二脉冲序列。 第二系列脉冲在使能周期内与方波及其补码逻辑组合，以产生到参考绕组的输出脉冲。 电动机通电信号控制连接到要被控制的电动机的各个绕组的功率开关放大器并响应于适当的脉宽调制信号。
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