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1. 发明授权

US4148452A Filtering technique based on high-frequency plant modeling for high-gain control 失效
标题翻译：基于高频植物建模的高增益控制滤波技术
公开(公告)号：US4148452A
公开(公告)日：1979-04-10
申请号：US858762
申请日：1977-12-08
申请人： Frank R. Niessen , John F. Garren, Jr.
发明人： Frank R. Niessen , John F. Garren, Jr.
IPC分类号： G05D1/08
CPC分类号： G05D1/0825
摘要： This invention is an improvement in aircraft control systems that utilize feedback motion sensors to generate a control signal to control the aircraft. The improvement consists essentially of a complementary filter comprising a simplified model of the aircraft, a high-pass filter, a low-pass filter and a summing amplifier. The control signal is applied to the simplified model of the aircraft which ateempts to compute the vehicle response to the signal. This computed response is then fed into the high-pass filter to eliminate long-term errors in the calculated response, with the result that a good estimate of the high frequency content of the aircraft motion is obtained. In order to obtain a good estimate of the low frequency content of the motion a rate gyro signal is fed through the low-pass filter that eliminates all of the offending noise. The outputs from the high-pass and low-pass filters are summed by the summing amplifier to produce an estimated rate which is then used as a motion feedback signal. The use of the complementary filter permits a substantial increase in frequency band-width due to the simultaneous reduction in noise amplificaton and control limit-cycle tendencies.
摘要翻译：本发明是利用反馈运动传感器产生控制信号以控制飞行器的飞机控制系统的改进。该改进基本上由包括飞行器的简化模型，高通滤波器，低通滤波器和求和放大器的补充滤波器组成。控制信号被应用于飞行器的简化模型，该简化模型试图计算车辆对信号的响应。然后将该计算的响应馈送到高通滤波器中以消除所计算的响应中的长期误差，结果是获得对飞行器运动的高频内容的良好估计。为了获得运动的低频内容的良好估计，速率陀螺仪信号通过低通滤波器馈送，消除了所有令人讨厌的噪声。来自高通滤波器和低通滤波器的输出由求和放大器相加以产生估计速率，然后将其用作运动反馈信号。由于噪声放大和控制限制周期趋势的同时减少，使用互补滤波器可以显着增加频带宽度。

2. 发明授权

US4656362A Blade pitch angle control for large wind turbines 失效
标题翻译：用于大型风力发电机的桨叶角度控制
公开(公告)号：US4656362A
公开(公告)日：1987-04-07
申请号：US722767
申请日：1985-04-16
申请人： Kermit I. Harner , Frank R. Niessen , Robert Sherman
发明人： Kermit I. Harner , Frank R. Niessen , Robert Sherman
IPC分类号： F03D7/02 , F03D7/04 , F03D9/00
CPC分类号： F03D7/043 , F03D7/0224 , F03D9/002 , F05B2220/706 , F05B2260/74 , F05B2270/32 , F05B2270/327 , F05B2270/335 , Y02E10/723 , Y02E10/725
摘要： A blade pitch angle control system for a wind turbine includes an improved control means (95) for providing a minimum pitch angle reference signal indicative of desired blade pitch at wind velocities less than rated. The control means includes means (35 and 30) for providing signals indicative of generated (output) power or torque and the rotational frequency of the wind turbine rotor. The output and rotor speed signals are input to a function generator which, in response to such signals, provides a signal indicative of the minimum pitch angle.
摘要翻译：用于风力涡轮机的桨叶倾角控制系统包括改进的控制装置（95），用于在小于额定值的风速下提供指示期望叶片桨距的最小俯仰角参考信号。控制装置包括用于提供表示风力涡轮机转子的产生（输出）功率或转矩以及转速的信号的装置（35和30）。输出和转子速度信号被输入到函数发生器，函数发生器响应于这些信号提供表示最小桨距角的信号。

3. 发明授权

US5072357A Automatic reset circuit for integral control 失效
标题翻译：自动复位电路，用于集成控制
公开(公告)号：US5072357A
公开(公告)日：1991-12-10
申请号：US488918
申请日：1990-03-05
申请人： Frank R. Niessen , Joseph M. Kos
发明人： Frank R. Niessen , Joseph M. Kos
IPC分类号： G05B5/01
CPC分类号： G05B5/01
摘要： An automatic control system includes a multiplier for multiplying the error signal fed to an integrator in accordance with the state of the integrator. The multiplier multiplies the error signal by a unity gain factor over the normal range of integral control; whereas, the multiplier multiplies the error signal by a factor greater than one, typically ten, when the integrator output is saturated at either the minimum or maximum values. The high multiplication value of the error signal ensures a sufficiently quick recovery from an integrator saturation condition.
摘要翻译：自动控制系统包括乘法器，用于根据积分器的状态将馈送到积分器的误差信号相乘。乘法器将误差信号乘以整数控制的正常范围内的单位增益系数; 而当积分器输出在最小值或最大值饱和时，乘法器将误差信号乘以大于1的因子，通常为10。误差信号的高乘法值确保从积分器饱和状态恢复得足够快。

4. 发明授权

US5042965A Propeller synchrophaser control with trajectory logic 失效
标题翻译：螺旋桨同步控制与轨迹逻辑
公开(公告)号：US5042965A
公开(公告)日：1991-08-27
申请号：US367285
申请日：1989-06-16
申请人： Frank R. Niessen
发明人： Frank R. Niessen
IPC分类号： B64C11/50 , H02P5/52
CPC分类号： H02P5/52 , B64C11/50
摘要： An apparatus for controlling the phase of a slave propeller relative to that of a master propeller is shown and described. A logic means having a trajectory function, F(.phi..sub.E), which defines the region for phase holding, i.e. where the error correction signal, .phi..sub.EC, equals phase error .phi..sub.E. In the region of phase holding, normal control is achieved and there is no slipping of control from a first propeller blade to a second propeller blade.
摘要翻译：显示和描述了一种用于控制从属螺旋桨相对于主螺旋桨的相位的装置。具有定义用于相位保持的区域的轨迹函数F（phi E）的逻辑手段，即纠错信号phi EC等于相位误差phi E.在相位保持区域中，实现正常控制，没有从第一螺旋桨叶片到第二螺旋桨叶片的控制滑动。

5. 发明授权

US4659283A Propeller Synchrophaser.RTM. device and mode logic 失效
标题翻译：螺旋桨同步器TM设备和模式逻辑
公开(公告)号：US4659283A
公开(公告)日：1987-04-21
申请号：US781586
申请日：1985-09-30
申请人： Frank R. Niessen , Roy W. Schneider
发明人： Frank R. Niessen , Roy W. Schneider
IPC分类号： B64C11/50 , H02P5/52
CPC分类号： B64C11/50 , H02P5/56
摘要： An improved slave propeller SYNCHROPHASER.RTM. device and mode logic for a multi-propeller aircraft is disclosed. A designated master propeller has at least one associated slave propeller which has its speed and phase controlled with respect to the master by initially controlling the speed of the slave propeller to within a selected constant number of RPM of the master so that the master and slave propellers are periodically in phase and then switching to phase control for controlling the speed of the slave propeller in the presence of a phase difference signal having an absolute magnitude less than a selected absolute magnitude. A selected phase difference relationship between the master and the slave may thus be effected with minimum transient effect on the speed of the slave propeller.
摘要翻译：公开了一种用于多螺旋桨飞机的改进的从属螺旋桨SYNCHROPHASER TM装置和模式逻辑。指定的主螺旋桨具有至少一个相关联的从属推进器，其通过初始地将主推进器的速度控制在主控制器的选定的常数RPM内，使其相对于主机具有速度和相位控制，使得主从动螺旋桨周期性地同相，然后切换到相位控制，以在存在具有小于所选绝对量值的绝对量值的相位差信号的情况下控制从属螺旋桨的速度。因此，可以以对从属螺旋桨的速度具有最小的瞬时效应来实现主机和从机之间所选择的相位差关系。

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