Digital to analog converter with reduced output noise
    41.
    发明授权
    Digital to analog converter with reduced output noise 有权
    具有降低输出噪声的数模转换器

    公开(公告)号:US07106234B2

    公开(公告)日:2006-09-12

    申请号:US11038242

    申请日:2005-01-21

    CPC classification number: H03M3/368 H03M3/464

    Abstract: A DAC (1) has a switched element capacitor (7, Cr) to which charge is delivered via switches (6, S1/S2) depending on required analog voltage level (Vref1, Vref2). An output switch (S3) is closed and a ground switch (S4) is opened to deliver charge to the output according to received bi-level digital inputs (+1, −1). The control block (2) has a memory and determines an inactive output level if there is an input digital transition from +1 to −1 or from −1 to +1. For the inactive level S3 is kept open and S4 is kept closed. Thus, for every clock cycle with one of these transitions there is no charge transfer and hence no thermal noise. Overall noise is therefore considerably reduced.

    Abstract translation: DAC(1)具有取决于所需的模拟电压电平(Vref 1,Vref 2)的开关(6,S 1 / S 2)向其输送电荷的开关元件电容器(7,Cr)。 输出开关(S 3)闭合,接地开关(S 4)打开,根据接收到的双电平数字输入(+1,-1)将电荷输送到输出端。 如果存在从+1到-1或从-1到+1的输入数字转换,则控制块(2)具有存储器并且确定不活动的输出电平。 对于无效级别,S 3保持打开,并且S 4保持关闭。 因此,对于具有这些转换之一的每个时钟周期,不存在电荷转移,因此没有热噪声。 因此整体噪音大大降低。

    CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS
    43.
    发明申请
    CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS 审中-公开
    电机驱动系统的控制技术

    公开(公告)号:US20140292249A1

    公开(公告)日:2014-10-02

    申请号:US14303896

    申请日:2014-06-13

    CPC classification number: G05B13/02 G05B5/01 H02P25/034

    Abstract: Embodiments of the present invention provide a motor-driven mechanical system with a detection system to measure properties of a back channel and derive oscillatory characteristics of the mechanical system. Uses of the detection system may include calculating the resonant frequency of the mechanical system and a threshold drive DTH required to move the mechanical system from the starting mechanical stop position. System manufacturers often do not know the resonant frequency and DTH of their mechanical systems precisely. Therefore, the calculation of the specific mechanical system's resonant frequency and DTH rather than depending on the manufacturer's expected values improves precision in the mechanical system use. The backchannel calculations may be used either to replace or to improve corresponding pre-programmed values.

    Abstract translation: 本发明的实施例提供一种具有检测系统的电机驱动机械系统,用于测量后通道的性质并导出机械系统的振荡特性。 检测系统的使用可以包括计算机械系统的谐振频率和将机械系统从起动机械停止位置移动所需的阈值驱动DTH。 系统制造商往往不了解其机械系统的谐振频率和DTH。 因此,特定机械系统的谐振频率和DTH的计算而不是依赖于制造商的预期值来提高机械系统使用的精度。 反向通道计算可用于替换或改善相应的预编程值。

    Control techniques for motor driven systems
    44.
    发明授权
    Control techniques for motor driven systems 有权
    电机驱动系统的控制技术

    公开(公告)号:US08766565B2

    公开(公告)日:2014-07-01

    申请号:US12572559

    申请日:2009-10-02

    CPC classification number: G05B13/02 G05B5/01 H02P25/034

    Abstract: Embodiments of the present invention provide a motor-driven mechanical system with a detection system to measure properties of a back channel and derive oscillatory characteristics of the mechanical system. Uses of the detection system may include calculating the resonant frequency of the mechanical system and a threshold drive DTH required to move the mechanical system from the starting mechanical stop position. System manufacturers often do not know the resonant frequency and DTH of their mechanical systems precisely. Therefore, the calculation of the specific mechanical system's resonant frequency and DTH rather than depending on the manufacturer's expected values improves precision in the mechanical system use. The backchannel calculations may be used either to replace or to improve corresponding pre-programmed values.

    Abstract translation: 本发明的实施例提供一种具有检测系统的电机驱动机械系统,用于测量后通道的性质并导出机械系统的振荡特性。 检测系统的使用可以包括计算机械系统的谐振频率和将机械系统从起动机械停止位置移动所需的阈值驱动DTH。 系统制造商往往不了解其机械系统的谐振频率和DTH。 因此,特定机械系统的谐振频率和DTH的计算而不是依赖于制造商的预期值来提高机械系统使用的精度。 反向通道计算可用于替换或改善相应的预编程值。

    Open loop rail-to-rail precharge buffer
    45.
    发明授权
    Open loop rail-to-rail precharge buffer 有权
    开环轨到轨预充电缓冲器

    公开(公告)号:US08514006B2

    公开(公告)日:2013-08-20

    申请号:US13115724

    申请日:2011-05-25

    CPC classification number: H03K19/01714

    Abstract: A method and system that may include a pair of amplifier transistors and an output coupled to a load device. The precharge buffer may be controlled by an activation signal. The precharge buffer may also include a pair of level shifters. Each level shifter may be provided in association with a respective one of the transistors, and each may provide a respective level shift to an input signal at a common signal source based on a reference voltage. Outputs of the level shifters may be coupled to the respective transistors. The precharge buffer may also include a bypass signal path extending from the common signal source to the load device. A signal path may be controlled by another activation signal, and the precharge buffer and the bypass signal may be enabled during mutually exclusive states of the activation signal.

    Abstract translation: 可以包括一对放大器晶体管和耦合到负载装置的输出的方法和系统。 预充电缓冲器可以通过激活信号来控制。 预充电缓冲器还可以包括一对电平移位器。 每个电平移位器可以与晶体管中的相应一个相关联地提供,并且每个电平移位器可以基于参考电压在公共信号源处向输入信号提供相应的电平移位。 电平移位器的输出可以耦合到相应的晶体管。 预充电缓冲器还可以包括从公共信号源延伸到负载装置的旁路信号路径。 信号路径可以由另一激活信号控制,并且可以在激活信号的互斥状态期间使能预充电缓冲器和旁路信号。

    Control techniques for motor driven systems
    46.
    发明授权
    Control techniques for motor driven systems 有权
    电机驱动系统的控制技术

    公开(公告)号:US08228017B2

    公开(公告)日:2012-07-24

    申请号:US12555936

    申请日:2009-09-09

    CPC classification number: H02P23/0077

    Abstract: A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. The drive signal may be provided in a series of steps according to a selected row of Pascal's triangle, wherein the number of steps equals the number of entries from the selected row of Pascal's triangle, each step has a step size corresponding to a respective entry of the selected row of Pascal's triangle, and the steps are spaced from each other according to a time constant determined by an expected resonant frequency of the mechanical system. Alternatively, the stepped drive signal may be provided as a series of uniform steps according to a selected row of Pascal's triangle, in which the steps are provided in a number of spaced intervals corresponding to the number of entries from the selected row of Pascal's triangle, each interval includes a number of steps corresponding to a respective entry from the selected row of Pascal's triangle and the intervals are spaced in time according to a time constant determined from the expected resonant frequency of the mechanical system. These techniques not only generate a drive signal with substantially no energy at the expected resonant frequency, they provide a zero-energy “notch” of sufficient width to tolerate systems in which the actual resonant frequency differs from the expected resonant frequencies.

    Abstract translation: 在机械系统的预期谐振频率下,用于电动机械系统的驱动信号具有零(或接近于零)的能量。 可以根据所选择的帕斯卡三角形行以一系列步骤提供驱动信号,其中步数等于所选行的帕斯卡三角形的条目数,每一步具有对应于 所选择的Pascal三角形行,并且步骤根据由机械系统的预期谐振频率确定的时间常数彼此间隔开。 或者,阶梯驱动信号可以根据所选择的帕斯卡三角形行被提供为一系列均匀的步骤,其中步骤以对应于所选行的帕斯卡三角形的条目数量的间隔间隔提供, 每个间隔包括对应于所选行的帕斯卡三角形的相应条目的多个步骤,并且间隔根据从机械系统的预期谐振频率确定的时间常数在时间上间隔开。 这些技术不仅在预期谐振频率下产生基本上没有能量的驱动信号,它们提供足够宽度的零能量“陷波”以容忍其中实际谐振频率与预期谐振频率不同的系统。

    OPEN LOOP RAIL-TO-RAIL PRECHARGE BUFFER
    47.
    发明申请
    OPEN LOOP RAIL-TO-RAIL PRECHARGE BUFFER 有权
    OPEN LOOP RAIL-TO-RAIL PRECHAR BUILER

    公开(公告)号:US20120092058A1

    公开(公告)日:2012-04-19

    申请号:US13115724

    申请日:2011-05-25

    CPC classification number: H03K19/01714

    Abstract: A method and system that may include a pair of amplifier transistors and an output coupled to a load device. The precharge buffer may be controlled by an activation signal. The precharge buffer may also include a pair of level shifters. Each level shifter may be provided in association with a respective one of the transistors, and each may provide a respective level shift to an input signal at a common signal source based on a reference voltage. Outputs of the level shifters may be coupled to the respective transistors. The precharge buffer may also include a bypass signal path extending from the common signal source to the load device. A signal path may be controlled by another activation signal, and the precharge buffer and the bypass signal may be enabled during mutually exclusive states of the activation signal.

    Abstract translation: 可以包括一对放大器晶体管和耦合到负载装置的输出的方法和系统。 预充电缓冲器可以通过激活信号来控制。 预充电缓冲器还可以包括一对电平移位器。 每个电平移位器可以与晶体管中的相应一个相关联地提供,并且每个电平移位器可以基于参考电压在公共信号源处向输入信号提供相应的电平移位。 电平移位器的输出可以耦合到相应的晶体管。 预充电缓冲器还可以包括从公共信号源延伸到负载装置的旁路信号路径。 信号路径可以由另一激活信号控制,并且可以在激活信号的互斥状态期间使能预充电缓冲器和旁路信号。

    Control techniques for electrostatic microelectromechanical (MEM) structure
    48.
    发明授权
    Control techniques for electrostatic microelectromechanical (MEM) structure 有权
    静电微机电(MEM)结构的控制技术

    公开(公告)号:US08102637B2

    公开(公告)日:2012-01-24

    申请号:US12507361

    申请日:2009-07-22

    CPC classification number: H01H59/0009 H01H47/14

    Abstract: Disclosed are a method, device, and system for a microelectromechanical (MEM) device control system that can control the operation of a MEM device. The system can include a microelectromechanical device and a control circuit. The micromechanical device can include a moveable member coupled to an electrical terminal, a sensor, responsive to a movement of the moveable member, can output a sensor signal based on the movement of the moveable member, and an actuating electrode for receiving a control signal. The control circuit can be responsive to the signals output by the sensor and outputs the control signal to the actuating electrode.

    Abstract translation: 公开了可以控制MEM装置的操作的用于微机电(MEM)装置控制系统的方法,装置和系统。 该系统可以包括微机电装置和控制电路。 微机械装置可以包括耦合到电端子的可移动构件,响应于可移动构件的运动的传感器可以基于可移动构件的运动输出传感器信号,以及用于接收控制信号的致动电极。 控制电路可以响应由传感器输出的信号,并将控制信号输出到致动电极。

    CONTROL TECHNIQUES FOR ELECTROSTATIC MICROELECTROMECHANICAL (MEM) STRUCTURE
    49.
    发明申请
    CONTROL TECHNIQUES FOR ELECTROSTATIC MICROELECTROMECHANICAL (MEM) STRUCTURE 有权
    静电微电子(MEM)结构的控制技术

    公开(公告)号:US20110019330A1

    公开(公告)日:2011-01-27

    申请号:US12507361

    申请日:2009-07-22

    CPC classification number: H01H59/0009 H01H47/14

    Abstract: Disclosed are a method, device, and system for a microelectromechanical (MEM) device control system that can control the operation of a MEM device. The system can include a microelectromechanical device and a control circuit. The micromechanical device can include a moveable member coupled to an electrical terminal, a sensor, responsive to a movement of the moveable member, can output a sensor signal based on the movement of the moveable member, and an actuating electrode for receiving a control signal. The control circuit can be responsive to the signals output by the sensor and outputs the control signal to the actuating electrode.

    Abstract translation: 公开了可以控制MEM装置的操作的用于微机电(MEM)装置控制系统的方法,装置和系统。 该系统可以包括微机电装置和控制电路。 微机械装置可以包括耦合到电端子的可移动构件,响应于可移动构件的运动的传感器可以基于可移动构件的运动输出传感器信号,以及用于接收控制信号的致动电极。 控制电路可以响应由传感器输出的信号,并将控制信号输出到致动电极。

    CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS
    50.
    发明申请
    CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS 审中-公开
    电机驱动系统的控制技术

    公开(公告)号:US20100201302A1

    公开(公告)日:2010-08-12

    申请号:US12367938

    申请日:2009-02-09

    CPC classification number: G05B5/01

    Abstract: A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. The drive signal may be provided in a series of steps according to a selected row of Pascal's triangle, wherein the number of steps equals the number of entries from the selected row of Pascal's triangle, each step has a step size corresponding to a respective entry of the selected row of Pascal's triangle, and the steps are spaced from each other according to a time constant determined by an expected resonant frequency of the mechanical system. Alternatively, the stepped drive signal may be provided as a series of uniform steps according to a selected row of Pascal's triangle, in which the steps are provided in a number of spaced intervals corresponding to the number of entries from the selected row of Pascal's triangle, each interval includes a number of steps corresponding to a respective entry from the selected row of Pascal's triangle and the intervals are spaced in time according to a time constant determined from the expected resonant frequency of the mechanical system. These techniques not only generate a drive signal with substantially no energy at the expected resonant frequency, they provide a zero-energy “notch” of sufficient width to tolerate systems in which the actual resonant frequency differs from the expected resonant frequencies.

    Abstract translation: 在机械系统的预期谐振频率下,用于电动机械系统的驱动信号具有零(或接近于零)的能量。 可以根据所选择的帕斯卡三角形行以一系列步骤提供驱动信号,其中步数等于所选行的帕斯卡三角形的条目数,每一步具有对应于 所选择的Pascal三角形行,并且步骤根据由机械系统的预期谐振频率确定的时间常数彼此间隔开。 或者,阶梯式驱动信号可以根据所选择的帕斯卡三角形行被提供为一系列均匀步骤,其中步骤以对应于所选行的帕斯卡尔三角形的条目数量的间隔间隔提供, 每个间隔包括对应于所选行的帕斯卡三角形的相应条目的多个步骤,并且间隔根据从机械系统的预期谐振频率确定的时间常数在时间上间隔开。 这些技术不仅在预期谐振频率下产生基本上没有能量的驱动信号,它们提供足够宽度的零能量“陷波”以容忍其中实际谐振频率与预期谐振频率不同的系统。

Patent Agency Ranking