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57 条记录 (耗时 0.043 秒)

    Method and system for assessing performance of control systems
    22.
    发明授权
    Method and system for assessing performance of control systems 有权
    评估控制系统性能的方法和系统

    公开(公告)号：US07729882B2

    公开(公告)日：2010-06-01

    申请号：US12363562

    申请日：2009-01-30

    申请人： John E. Seem

    发明人： John E. Seem

    IPC分类号： G06F17/18

    CPC分类号： G05B23/0216 ,  G05B23/024

    摘要： A system is disclosed for scaling performance indicators of control applications in an environmental control system. The system is configured to identify a probability distribution that is characteristic of a fault-free environmental control system and to use the probability distribution of a fault-free environmental control system in calculations to display probability distributions of data from first and second control applications on a common scale.

    摘要翻译： 公开了一种用于缩放环境控制系统中控制应用的性能指标的系统。 该系统被配置为识别作为无故障环境控制系统的特征的概率分布，并且在计算中使用无故障环境控制系统的概率分布来显示来自第一和第二控制应用的数据的概率分布 共同规模。

    Method of intelligent data analysis to detect abnormal use of utilities in buildings
    23.
    发明授权
    Method of intelligent data analysis to detect abnormal use of utilities in buildings 有权
    智能数据分析方法，用于检测建筑物中公用设施的异常使用情况

    公开(公告)号：US06816811B2

    公开(公告)日：2004-11-09

    申请号：US09910371

    申请日：2001-07-20

    申请人： John E. Seem

    发明人： John E. Seem

    IPC分类号： G08B2100

    CPC分类号： G06F17/18 ,  G01D4/14

    摘要： Outlier identification is employed to detect abnormally high or low energy use in a building. The utility use is measured periodically throughout each day and the measurements are grouped according to days that have similar average utility consumption levels. The data in each group is statistically analyzed using the Generalized Extreme Studentized Deviate (GESD) method. That method identifies outliers which are data samples that vary significantly from the majority of the data. The degree to which each outlier deviates from the remainder of the data indicates the severity of the abnormal utility consumption denoted by that outlier. The resultant outlier information is readily discernable by the building operators in accessing whether the cause of a particular occurrence of abnormal utility usage requires further investigation.

    摘要翻译： 使用异常值识别来检测建筑物中异常高或低能量的使用。 每天定期测量效用使用情况，根据具有类似平均效用消耗水平的天数对测量进行分组。 使用广义极端学生偏倚（GESD）方法对每组中的数据进行统计分析。 该方法识别出与大多数数据显着不同的数据样本的异常值。 每个异常值偏离数据的其余部分的程度表示由该异常值表示的异常公用事业消耗的严重性。 所得到的离群信息在建筑操作者访问是否需要进一步调查的异常公用事业特定事件的原因时很容易辨别出来。

    System and method for controlling air quality in a room
    24.
    发明授权
    System and method for controlling air quality in a room 有权
    控制房间空气质量的系统和方法

    公开(公告)号：US06369716B1

    公开(公告)日：2002-04-09

    申请号：US09728232

    申请日：2000-12-01

    申请人： Mustafa Abbas ,  John E. Seem ,  Bernard Philippe Nicolas Clement

    发明人： Mustafa Abbas ,  John E. Seem ,  Bernard Philippe Nicolas Clement

    IPC分类号： G08B1710

    CPC分类号： G08B21/12 ,  F24F11/30 ,  F24F2011/0002 ,  F24F2110/50 ,  F24F2110/70

    摘要： A system and method of controlling air quality within a room. The method includes determining a first discharge air temperature setpoint based upon a room temperature setpoint and a first value indicative of an air temperature within the room, and determining a first air flow control signal based upon the first discharge air temperature setpoint and a second value indicative of an air temperature of discharge air being provided into the room. The method further includes controlling an air flow device based upon the first air flow control signal, and maintaining a heating device employed to influence the air temperature of the discharge air at a maximum heating level. The method additionally includes monitoring a level of carbon dioxide within the room to determine whether the level is below a predetermined threshold.

    摘要翻译： 控制房间内空气质量的系统和方法。 该方法包括基于室温设定点和指示房间内的空气温度的第一值来确定第一排出空气温度设定点，以及基于第一排出空气温度设定点确定第一气流控制信号和指示第二排气温度设定点 排出空气的空气温度被提供到房间中。 该方法还包括基于第一气流控制信号控制空气流动装置，并且保持用于以最大加热水平影响排出空气的空气温度的加热装置。 该方法还包括监测房间内的二氧化碳水平以确定水位是否低于预定阈值。

    Apparatus and method for filtering a digital signal
    26.
    发明授权
    Apparatus and method for filtering a digital signal 失效
    用于过滤数字信号的装置和方法

    公开(公告)号：US06122605A

    公开(公告)日：2000-09-19

    申请号：US135786

    申请日：1998-08-18

    申请人： Kirk H. Drees ,  Nebil Ben-Aissa ,  John E. Seem

    发明人： Kirk H. Drees ,  Nebil Ben-Aissa ,  John E. Seem

    IPC分类号： G05B5/01 ,  G05B7/02 ,  G05B11/36 ,  G05B11/42 ,  G05B13/02 ,  G05B21/02 ,  H03H17/02 ,  H03K5/08

    CPC分类号： G05B5/01 ,  G05B11/42 ,  G05B13/024 ,  G05B7/02

    摘要： A closed loop feedback control system operates to maintain a process variable at or near a process variable setpoint. A digital filter is implemented with the controller to filter the process variable signal input to the controller. The filter includes both an amplitude filter to clip signal spikes and glitches and low pass filter to remove higher order, noise related frequencies from the signal, that could adversely affect computational speed of the controller.

    摘要翻译： 闭环反馈控制系统用于将过程变量保持在过程变量设定点处或附近。 使用控制器实现数字滤波器，以过滤输入到控制器的过程变量信号。 滤波器包括幅度滤波器，用于钳位信号尖峰和毛刺以及低通滤波器，以从信号中去除高阶噪声相关频率，这可能不利地影响控制器的计算速度。

    Fast automatic tuning of a feedback controller
    27.
    发明授权
    Fast automatic tuning of a feedback controller 失效
    快速自动调谐反馈控制器

    公开(公告)号：US5568377A

    公开(公告)日：1996-10-22

    申请号：US346570

    申请日：1994-11-29

    申请人： John E. Seem ,  Gaylon M. Decious

    发明人： John E. Seem ,  Gaylon M. Decious

    IPC分类号： G05B11/42 ,  G05B13/02

    CPC分类号： G05B13/024 ,  G05B11/42

    摘要： A feedback controller configured to automatically tune a control system by determining proportional gain, integral time and/or derivative time control parameters based on estimates of process time delay, process time constant and process gain values which are monitored by the feedback controller. The feedback controller further determines control limits for estimating the process time delay based on the resolution of the sampled values of the process output and the standard deviation of the process output during the initial steady-state condition. The feedback controller also estimates characteristic areas for a first-order response based on a first-order plus time-delay model to determine process time constant and process gain values. These process time constant, process gain and process delay estimates are translated into proportional gain, integral time and/or derivative time control parameters based on design relations of the particular feedback controller.

    摘要翻译： 反馈控制器，被配置为基于由反馈控制器监视的过程时间延迟，过程时间常数和过程增益值的估计，通过确定比例增益，积分时间和/或微分时间控制参数来自动调整控制系统。 反馈控制器还基于过程输出的采样值和初始稳态条件下的过程输出的标准偏差的分辨率来确定用于估计处理时间延迟的控制极限。 反馈控制器还基于一阶加时间延迟模型估计用于一阶响应的特征区域，以确定处理时间常数和处理增益值。 这些处理时间常数，过程增益和过程延迟估计根据特定反馈控制器的设计关系转换为比例增益，积分时间和/或微分时间控制参数。

    Controller for use in an environment control network capable of storing diagnostic information
    28.
    发明授权
    Controller for use in an environment control network capable of storing diagnostic information 失效
    用于能够存储诊断信息的环境控制网络中的控制器

    公开(公告)号：US5555195A

    公开(公告)日：1996-09-10

    申请号：US278915

    申请日：1994-07-22

    申请人： Howard A. Jensen ,  John E. Seem

    发明人： Howard A. Jensen ,  John E. Seem

    IPC分类号： F24F3/044 ,  F24F11/00 ,  G01F1/34 ,  G01F15/06 ,  G05B19/418 ,  G01F1/06

    CPC分类号： G05B19/4184 ,  F24F11/0086 ,  G01F1/34 ,  G01F15/063 ,  F24F2011/0067 ,  F24F2011/0091 ,  F24F3/044 ,  Y02B30/767 ,  Y02P90/14 ,  Y02P90/18

    摘要： The present invention relates to a diagnostic system for use in a network control system. The diagnostic system is preferably utilized to analyze VAV box performance in an environmental control system such as a network facilities management system. The diagnostic system advantageously records temperature, airflow, and actuator position data in the controller associated with the VAV box. Such a system allows person to analyze VAV boxes and controller performance over a particular timely period and the lifetime of the system. Box and damper warnings may be provided by the diagnostic system when the box or damper is operating below particular performance levels. Preferably, the diagnostic system formats the air flow actuator positions and temperature data so that it can be displayed for graphing. The diagnostic data is advantageously stored in the individual controllers.

    摘要翻译： 本发明涉及一种在网络控制系统中使用的诊断系统。 诊断系统优选地用于分析诸如网络设施管理系统的环境控制系统中的VAV盒性能。 诊断系统有利地将温度，气流和致动器位置数据记录在与VAV箱相关联的控制器中。 这样的系统允许人们在特定的时间和系统的使用寿命内分析VAV盒和控制器的性能。 当盒子或阻尼器运行在特定的性能水平以下时，诊断系统可能会提供盒子和阻尼器警告。 优选地，诊断系统对气流致动器位置和温度数据进行格式化，使得其可以被显示用于图形化。 诊断数据有利地存储在各个控制器中。

    Pattern recognition adaptive controller and method used in HVAC control
    29.
    发明授权
    Pattern recognition adaptive controller and method used in HVAC control 失效
    HVAC控制中使用的模式识别自适应控制器和方法

    公开(公告)号：US5506768A

    公开(公告)日：1996-04-09

    申请号：US291283

    申请日：1994-08-16

    申请人： John E. Seem ,  Howard J. Haugstad

    发明人： John E. Seem ,  Howard J. Haugstad

    IPC分类号： G05B11/42 ,  G05B13/02

    CPC分类号： G05B11/42 ,  G05B13/024

    摘要： A pattern recognition adaptive controller configured to dynamically adjust proportional gain and integral time control parameters to minimize integrated absolute errors between a setpoint temperature and a monitored temperature in an HVAC system. The pattern recognition adaptive controller receives a sampled signal representative of the temperature and determines a smoothed signal based on the sampled signal. The controller characterizes a disturbance in the smoothed signal by a damping factor and a closed loop response time. When a significant load disturbance or setpoint temperature change occurs, the controller estimates an optimal gain based on the damping factor, and an optimal integral time based on the response time. The estimated optimal gain and estimated optimal integral time are used to determining a new gain and a new integral time values, to which the control parameters of the controller are then set.

    摘要翻译： 模式识别自适应控制器，被配置为动态地调整比例增益和积分时间控制参数，以最小化HVAC系统中设定点温度和监测温度之间的积分绝对误差。 模式识别自适应控制器接收代表温度的采样信号，并根据采样信号确定平滑信号。 控制器通过阻尼因子和闭环响应时间来表征平滑信号中的干扰。 当发生显着的负载扰动或设定点温度变化时，控制器基于阻尼因子估计最佳增益，并根据响应时间估计最优积分时间。 估计的最佳增益和估计的最佳积分时间用于确定新的增益和新的积分时间值，然后设置控制器的控制参数。