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公开(公告)号：US06426600B1
公开(公告)日：2002-07-30
申请号：US09802823
申请日：2001-03-10
IPC分类号： H02P154
CPC分类号： G06F3/012
摘要： Apparatus, such as a wheelchair (10) is proportionally controlled by output signals produced by an X-Y input device (26, 58, 90, 100, 110, 360, or 370), which may be attached to head (90), a hand (112) or some other body component, and which may be actuated by tilting. The output signals are conditioned prior to application to the wheelchair (10). Apparatus for conditioning the output signals includes a transistor sensitivity control (180, 382A, 382B), a transducer sensitivity adjustment (344A, 384B, or 436) a signal limiting control (226, 394, 396), a signal limiting adjustment (438), a null offset device, or null-width generator (418, 130A/#?, 150A/#?), a rate-of-change controller (144A/#?), a turn signal conditioner, or steering sensitivity control (160, 170, 398, 400, 416), a steering sensitivity adjustment (434), a nonlinear device (420) that functions as a steering sensitivity control, a nonlinearity adjustment (422) that functions as a steering sensitivity adjustment, and a microprocessor (432) that may be used to perform some, or all, of the aforesaid functions.
摘要翻译： 诸如轮椅（10）的装置由可以附接到头部（90）的XY输入装置（26,58,90,100,110,360或370）产生的输出信号成比例地控制，一只手 （112）或一些其他身体部件，并且其可以通过倾斜来致动。 输出信号在施加到轮椅（10）之前被调节。 用于调节输出信号的装置包括晶体管灵敏度控制（180,382A，382B），传感器灵敏度调节（344A，384B或436）信号限制控制（226,394,396），信号限制调节（438） ，零位偏移装置或零宽度发生器（418,130A /＃，150A /＃？），变化率控制器（144A /＃？），转向信号调节器或转向灵敏度控制（160 ，170,398,400,416），转向灵敏度调节（434），用作转向灵敏度控制的非线性装置（420），用作转向灵敏度调节的非线性调整（422）和微处理器（ 432），其可以用于执行上述功能的一些或全部。
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公开(公告)号：US4978899A
公开(公告)日：1990-12-18
申请号：US354188
申请日：1988-04-28
CPC分类号： A61G5/04 , A61G5/1032 , B60L11/1805 , B60L7/00 , B60L2200/26 , Y02T10/646 , Y02T10/648 , Y02T10/7005
摘要： A conveyance (360) is provided with: dynamic braking of electric propulsion motors (26a and 26b) that is achieved by shorting a motor winding (150a) during a portion (233a) of an interval (217a) between pulses (207a) of a pulse-width modulated driving voltage (209a); automatic limiting (233) of the rate of change in power supplied to left (26a or 232a) and right (26b) propulsion motors, whether electrically or hydraulically propelled; power-off braking that is achieved by shorting a motor winding (150a) when power pulses are not being supplied; extended life of relays (144aand 148a) that is achieved by preventing current flow to the motors during opening and closing of the relay contacts (154a and 156a); and a solid-state switching device (168a and 170a) that is controlled by a signal in a single conductor (200a) and that provides an effective delay (219a and 221a) in switching between two circuits (152a and 160a).
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公开(公告)号：US4906906A
公开(公告)日：1990-03-06
申请号：US927273
申请日：1986-11-04
CPC分类号： A61G5/04 , A61G5/1032 , B60L11/1805 , B60L7/00 , B60L2200/26 , Y02T10/646 , Y02T10/648 , Y02T10/7005
摘要： A conveyance (10) is provided with: automatic limiting (223) of the rate of change in power supplied to left (26a or 232a) and right propulsion motors, whether electrically or hydraulically propelled; dynamic braking of electric propulsion motors (26a and 26b) that is achieved by shorting a motor winding (150a) during a portion (233a) of an interval (217a) between power pulses (207a) of a pulse-width-modulated driving voltage (209a); power-off braking that is achieved by shorting a motor winding (150a) when no power pulses are being supplied; extended life of relays (144a & 148a) that is achieved by preventing current flow to the motors during opening and closing of the relay contacts (154a and 156a); and a solid-state switching device (168a and 170a) that is controlled by a signal in a single conductor (200a) and that provides an effective delay (219a and 221a) in switching between two circuits (152a and 160a).
摘要翻译： 运输工具（10）设有：自动限制（223）供给左侧（26a或232a）和右侧推进电机的动力变化率，无论是电动还是液压驱动; 通过在脉冲宽度调制驱动电压的功率脉冲（207a）之间的间隔（217a）的部分（233a）期间短路电动机绕组（150a）而实现的电动推进电动机（26a和26b）的动态制动 209a）; 断电制动，其通过在不提供功率脉冲时使电动机绕组（150a）短路来实现; 延长通过在继电器触点（154a和156a）的打开和关闭期间防止电流流向电机而实现的继电器（144a和148a）的寿命; 以及由单个导体（200a）中的信号控制并且在两个电路（152a和160a）之间切换中提供有效延迟（219a和221a）的固态开关装置（168a和170a）。
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公开(公告)号：US5012165A
公开(公告)日：1991-04-30
申请号：US482461
申请日：1990-02-21
CPC分类号： A61G5/045 , A61G5/1032 , A61G5/1054 , B60L11/1805 , B60L7/00 , A61G2203/14 , A61G5/1018 , B60L2200/26 , Y02T10/646 , Y02T10/648 , Y02T10/7005
摘要： A conveyance (10) is provided with automatic limiting (223) of the rate of change in power supplied to first (26a or 232a) and second (26b) motors, whether the motors are electrical or hydraulic; and dynamic braking of electric motors (26a and 26b) is achieved by shorting a motor winding (150a) during a portion (233a) of an interval (217a) between power pulses (207a) of a pulse-width-modulated driving voltage (209a).
摘要翻译： 运输工具（10）具有自动限制（223）供应给第一（26a或232a）和第二（26b）马达的动力变化率，电动机是电动还是液压; 并且通过在脉冲宽度调制驱动电压（209a）的功率脉冲（207a）之间的间隔（217a）的部分（233a）期间使电动机绕组（150a）短路来实现电动机（26a和26b）的动态制动 ）。
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公开(公告)号：US20160123019A1
公开(公告)日：2016-05-05
申请号：US14618752
申请日：2015-02-10
IPC分类号： E04F15/02
CPC分类号： A47G27/0481 , A47G27/0462
摘要： A clip connector seaming apparatus having upstanding projections arranged in sections to point inwardly on the lateral and longitudinal axes adapted to join a plurality of modular floor covering units comprising a modular floor covering is provided. The clip connector may comprise a releasable silicone backing and a pressure sensitive tape to affix or “tack” the clip connector to a supporting surface. The clip connector does not require any spray adhesives or additional glue to affix floor covering units to a support surface and is resistant to wear, moisture, excessive force. The clip connector may also be reusable to provide for replacing individual floor covering units.
摘要翻译： 提供了具有直立布置的突出突起的夹子连接器缝合装置，该突出部分被布置成在适于连接包括模块化地板覆盖物的多个模块化地板覆盖单元的横向和纵向轴线上向内指向。 夹子连接器可以包括可释放的硅树脂背衬和压敏胶带，以将夹子连接器固定或“固定”到支撑表面。 夹子连接器不需要任何喷雾粘合剂或附加胶水将地板覆盖单元固定到支撑表面，并且耐磨损，潮湿，过大的力。 夹子连接器也可以是可重复使用的，用于替换单个地板覆盖单元。
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公开(公告)号：US06747517B2
公开(公告)日：2004-06-08
申请号：US10177572
申请日：2002-06-21
IPC分类号： H03F368
摘要： Apparatus (70, 80, 90) and method are provided for selectively proportioning, or hot-switching, rf power to a plurality of rf outputs. The method includes: splitting a single rf signal into a plurality of split rf signals using power splitters (12, 36, 38A, 38B); separately power amplifying the split rf signals into the plurality of rf power outputs in solid-state current devices (Q1, Q2, Q3, Q4); selectively proportioning gains of the power amplifying steps; and maintaining a total rf power substantially constant during the selectively proportioning step. Preferably, the method includes series connecting the solid-state current devices (Q1, Q2, Q3, Q4) in series between a dc source-voltage (VDC) and a lower dc voltage; and performing the separate amplifying steps in the series-connected solid-state current devices (Q1, Q2, Q3, Q4). The selective proportioning step includes adjusting gate voltages of the solid-state current devices (Q1, Q2, Q3).
摘要翻译： 提供了装置（70,80,90）和方法，用于选择性地配合或热切换多个射频输出。 该方法包括：使用功率分配器（12,36,38A，38B）将单个rf信号分离成多个分离rf信号; 将分离rf信号分别功率放大到固态电流装置（Q1，Q2，Q3，Q4）中的多个rf功率输出; 选择性地配比功率放大步骤的增益; 并且在选择性配比步骤期间保持总功率基本恒定。 优选地，该方法包括串联连接直流电源电压（VDC）和较低直流电压之间的固态电流器件（Q1，Q2，Q3，Q4）的串联; 并且在串联连接的固态电流器件（Q1，Q2，Q3，Q4）中执行单独的放大步骤。 选择性配比步骤包括调整固态电流器件（Q1，Q2，Q3）的栅极电压。
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公开(公告)号：US06411237B1
公开(公告)日：2002-06-25
申请号：US09540352
申请日：2000-03-31
IPC分类号： H03M166
CPC分类号： H03L7/189
摘要： Digital-to-analog converters (282, 292, 310, 340, or 370) produce intentionally nonlinear outputs. When outputs of a plurality of lower bits are replaced by a next higher bit, a downward step (281 or 330) is produced in an output voltage (276, 332, or 336). Each of the downward steps (281 or 330) results in production of substantially equal output voltages in response to two different digital numbers being inputted. The digital-to-analog converters (282, 292, 310, 340, or 370) of the present invention are useful in frequency-hopping oscillators (72, 136, 170, or 190), in phase-locked oscillators (10, 74, 152, 172, and 196), and in other electronic systems that include a learning path (222, 224, or 226) with a digital-to-analog converter.
摘要翻译： 数模转换器（282,292,310,340或370）产生有意非线性的输出。 当多个低位的输出被下一较高位代替时，在输出电压（276,332或336）中产生向下的步（281或330）。 每个向下的步骤（281或330）导致响应于输入的两个不同数字数字产生基本上相等的输出电压。 在锁相振荡器（10,74）中，本发明的数模转换器（282,292,310,340或370）可用于跳频振荡器（72,136,170或190） ，152,172和196）以及在包括数字 - 模拟转换器的学习路径（222,224或226）的其他电子系统中。
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公开(公告)号：US5802462A
公开(公告)日：1998-09-01
申请号：US584584
申请日：1996-01-11
CPC分类号： H03C3/095 , H03C3/0925 , H03C3/0933 , H03C3/0941 , H03L7/193 , H03D3/241 , H03D3/242
摘要： Signal processing apparatus (410) includes a phase-locked oscillator (200, 236, 310, 330, 390), having a closed loop with both forward (204) and feedback (206) paths, that is a part of a larger closed loop (438). The larger loop (438) is phase locked to the phase-locked oscillator (200, 236, 310, 330, 390) by a signal derived from the larger closed loop (438) that modulates the feedback path (206), and by an output frequency of the phase-locked oscillator (200, 236, 310, 330, 390) that is delivered to the larger loop (438). Modulating the feedback path (206) either adds pulses to the feedback path (206) or removes pulses, thereby causing irregularities in the flow of pulses. A low-pass filter (210) in the feedback path (206) obviates these irregularities, thereby also obviating incidental frequency modulation (IFM) in the output of the phase-locked oscillator (200, 236, 310, 330, 390). Frequency response limitation caused by the low-pass filter (210) is obviated by using the derived signal to modulate the forward path (204) substantially simultaneously with modulation of the feedback path (206).
摘要翻译： 信号处理装置（410）包括锁相振荡器（200,236,310,330,390），其具有带有前向（204）和反馈（206）路径的闭环，其是较大闭环的一部分 （438）。 较大的环路（438）通过从调制反馈路径（206）的较大闭环（438）得到的信号与锁相振荡器（200,236,310,330,390）锁相，并且由 输出到较大环路（438）的锁相振荡器（200,236,310,330,390）的输出频率。 调制反馈路径（206）将脉冲添加到反馈路径（206）或去除脉冲，从而导致脉冲流中的不规则。 反馈路径（206）中的低通滤波器（210）消除这些不规则性，从而也避免了锁相振荡器（200,236,310,330,390）的输出中的偶然频率调制（IFM）。 通过使用导出的信号基本上与调制反馈路径（206）同时调制前向路径（204）来消除由低通滤波器（210）引起的频率响应限制。
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公开(公告)号：US5311152A
公开(公告)日：1994-05-10
申请号：US916999
申请日：1992-08-31
CPC分类号： H03C3/095 , H03C3/0925 , H03C3/0933 , H03C3/0941 , H03L7/193 , H03C2200/0079
摘要： A D.C. modulated phase locked oscillator (60, 80, 100, 140, 160, 190, 220, 264, or 290) includes a phase locking oscillator (70, 90, 128, 180, 192, 222, 266, or 292) and a D.C. modulator (72, 92, 130, 156, 182, 194, 224, 268, or 294). Both a forward path (14) and a feedback path (16) are D.C. modulated. D.C. modulation of the feedback path (16) optionally includes changing the frequency in the feedback path (16) as a function of the frequency of a modulation oscillator (64), changing the frequency in the feedback path (16) by a plurality of pulses for each cycle of the modulation oscillator (64), removing pulses from the feedback path (16), adding pulses to the feedback path (16), dividing the frequency in the feedback path (16) by higher and lower dividing ratios, preventing one cycle in the feedback path (16) from developing a "high" in the feedback path (16), holding a "high" in the feedback path ( 16) between two adjacent pulses, mixing quadrature frequencies with the feedback frequency in the feedback path (16), changing one input to a variable modulus divider (48) by means of a parallel adder (272), and using logic elements (148) to remove pulses from the feedback path (16).
摘要翻译： PCT No.PCT / US91 / 03602 Sec。 371日期：1992年8月31日 102（e）日期1992年8月31日PCT提交1991年5月22日PCT公布。 WO91 / 18444 PCT出版物 日前，1991年11月28日，DC调制锁相振荡器（60,80,100,140,160,190,226,290或290）包括锁相振荡器（70,90,128,180,192,222） ，266或292）和DC调制器（72,92,130,156,182,194,224,268或294）。 正向路径（14）和反馈路径（16）都被调制。 反馈路径（16）的DC调制可选地包括根据调制振荡器（64）的频率来改变反馈路径（16）中的频率，将反馈路径（16）中的频率改变多个脉冲 对于调制振荡器（64）的每个周期，从反馈路径（16）去除脉冲，向反馈路径（16）添加脉冲，将反馈路径（16）中的频率除以更高和更低的分频比，防止一个 在反馈路径（16）中循环在反馈路径（16）中产生“高”，在两个相邻脉冲之间的反馈路径（16）中保持“高”，将正交频率与反馈路径中的反馈频率混合 （16），通过并行加法器（272）将一个输入改变为可变模数分频器（48），并且使用逻辑元件（148）去除来自反馈路径（16）的脉冲。
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10.发明申请公开(公告)号：US20170093353A1
公开(公告)日：2017-03-30
申请号：US14626580
申请日：2015-02-19
CPC分类号： H03G3/3036 , H03F1/0216 , H03F1/301 , H03F1/56 , H03F3/16 , H03F3/19 , H03F3/193 , H03F2200/129 , H03F2200/15 , H03F2200/18 , H03F2200/222 , H03F2200/24 , H03F2200/387 , H03F2200/451 , H03F2200/462
摘要： A feedback gate bias circuit for use in radio frequency amplifiers to more effectively control operation of LDFET, GaNFET, GaAsFET, and JFET type transistors used in such circuits. A transistor gate bias circuit that senses drain current and automatically adjusts or biases the gate voltage to maintain drain current independently of temperature, time, input drive, frequency, as well as from device to device variations. Additional circuits to provide temperature compensation, RF power monitoring and drain current control, RF output power leveler, high power gain block, and optional digital control of various functions. A gate bias circuit including a bias sequencer and negative voltage deriver for operation of N-channel depletion mode devices.
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