公开(公告)号：US4900226A

公开(公告)日：1990-02-13

申请号：US122944

申请日：1987-11-19

申请人： Luitzen de Vries

发明人： Luitzen de Vries

IPC分类号： B64C11/50

CPC分类号： B64C11/50 ,  Y02T50/66

摘要： Control system for synchrophasing the propellers of an aircraft, each propeller provided with a blade pitch controller for controlling the blade angle of the propeller, the systen containing for each propeller a control loop, comprising: a revolution rate controller, means for determining the blade passing frequency, an adjustable propeller revolution rate reference source supplying a revolution rate setpoint control signal, comparator means for comparing the blade passing frequency with said setpoint to generate an error signal for the revolution rate controller. The control system comprises furthermore for each propeller: means for determining the position of the propeller blades, a reference signal source, adjustable means changing the phase reference signal a comparator to compare the sensed position of the propeller blades with said phase reference signal, providing a control signal to be combined with the output signal of the revolution controller, and that the system furthermore comprises means to adjust said propeller revolution rate reference source and said phase reference signal deriving means such that for each revolution rate setpoint a predetermined mutual phase relationship between the propellers are maintained.

摘要翻译： 用于同步飞行器螺旋桨的控制系统，每个螺旋桨设置有用于控制螺旋桨的叶片角度的叶片俯仰控制器，每个螺旋桨包含控制回路的系统，包括：转速控制器，用于确定叶片通过的装置 提供转速设定点控制信号的可调螺旋桨转速参考源，比较器装置，用于将叶片通过频率与所述设定值进行比较，以产生转速控制器的误差信号。 所述控制系统还包括用于每个螺旋桨的装置：用于确定螺旋桨叶片的位置的装置，参考信号源，可调节装置，改变相位参考信号比较器以将所述螺旋桨叶片的感测位置与所述相位参考信号进行比较， 控制信号与旋转控制器的输出信号组合，并且该系统还包括用于调节所述螺旋桨转速参考源和所述相位参考信号导出装置的装置，使得对于每个转速设定点，预定的相位关系 螺旋桨被维持。

公开(公告)号：US4758164A

公开(公告)日：1988-07-19

申请号：US854524

申请日：1986-04-22

申请人： Luitzen de Vries

发明人： Luitzen de Vries

IPC分类号： G09B9/28 ,  G09B9/08

CPC分类号： G09B9/28

摘要： A flight simulator includes a servo system connected with a control element, an electrical analog providing inputs to the servo system and receiving inputs from a digital computer and including a combining circuit, a divider and two integrators. Outputs from the two integrators to the computer are of digital form and the second integrator preferably is itself of digital form.

摘要翻译： 飞行模拟器包括与控制元件连接的伺服系统，电模拟器提供对伺服系统的输入并从数字计算机接收输入，并且包括组合电路，分频器和两个积分器。 从两个积分器到计算机的输出都是数字形式，而第二个积分器本身就是数字形式。

公开(公告)号：US4708656A

公开(公告)日：1987-11-24

申请号：US826029

申请日：1986-02-04

申请人： Luitzen de Vries ,  Gerhard J. Wierda

发明人： Luitzen de Vries ,  Gerhard J. Wierda

IPC分类号： G09B9/28 ,  G09B9/08

CPC分类号： G09B9/28

摘要： A simulator of previously chosen mechanical properties of the steering system of a device such as an aircraft employs a controllable limiter for simulating the mechanical Coulomb friction of the control member and is arranged in a negative feedback loop and having two control signal inputs which determine the maximum and minimum outputs of the limiter in association with a further input signal corresponding to the friction concerning the control member. The limiter interrupts output until the level of the Coulomb friction to be simulated is exceeded.

摘要翻译： 先前选择的诸如飞行器的设备的转向系统的机械性能的模拟器采用可控制的限制器来模拟控制构件的机械库仑摩擦，并且被布置在负反馈回路中并具有确定最大值的两个控制信号输入 以及限制器的最小输出与对应于与控制构件相关的摩擦的另一个输入信号相关联。 限位器中断输出，直到超过要模拟的库仑摩擦水平。

公开(公告)号：US5078345A

公开(公告)日：1992-01-07

申请号：US610518

申请日：1990-11-08

申请人： Luitzen De Vries ,  Jan Meuzelaar

发明人： Luitzen De Vries ,  Jan Meuzelaar

IPC分类号： F02C9/28 ,  F02C9/58 ,  G05D1/06

CPC分类号： F02C9/58 ,  F02C9/28 ,  G05D1/063 ,  G05D1/0661 ,  G05D1/0676 ,  F05D2270/02 ,  F05D2270/052 ,  F05D2270/122

摘要： A flight control system of a turboprop airplane includes electronic controlled engines, which are governed by a manual operating device for setting the engine power in order to obtain a certain airspeed, a device for selecting a desired airspeed, and an engine control system for computing and controlling the required engine torque and speed as a function of ambient and engine conditions, the selected engine speed and the setting of said operating device. For automatically controlling the engine speed during the final approach to an airfield, the system includes an electronic approach speed control unit of which the adjustment signal influences the engine control device keeping the speed of the airplane during approach at a selected value whereby said manual operating device has a fixed setpoint. This electronic speed control unit may be carried out as an add-on device for retrofitting on a flight control system.

摘要翻译： 涡轮螺旋桨飞机的飞行控制系统包括电子控制发动机，其由手动操作装置控制，用于设定发动机功率以获得一定的空速，用于选择所需空速的装置，以及用于计算和 根据环境和发动机条件，所选择的发动机速度和所述操作装置的设置来控制所需的发动机扭矩和速度。 为了在最后接近机场期间自动控制发动机转速，该系统包括电子接近速度控制单元，其中调节信号影响发动机控制装置，以在接近期间将飞机的速度保持在选定值，由此所述手动操作装置 具有固定设定值。 该电子速度控制单元可以作为用于在飞行控制系统上进行改装的附加装置来执行。

公开(公告)号：US4398889A

公开(公告)日：1983-08-16

申请号：US271220

申请日：1981-06-08

申请人： Wilhelmus J. Lam ,  Luitzen de Vries

发明人： Wilhelmus J. Lam ,  Luitzen de Vries

IPC分类号： G09B9/28 ,  G09B9/08

CPC分类号： G09B9/28

摘要： A flight simulating system is provided with a manually operated control member connected to a servomechanism which responds to manual input by the control member and reacts to provide realistic feedback to the control member in accord with simulated flight conditions. For this purpose, a combining circuit, a dividing circuit and two integrator circuits are provided in series. The combining circuit has an input which represents manual input force to the control member and another input from the flight-simulating computer which represents simulated internal forces acting on the controlled member and the dividing circuit divides the output of the combining circuit by a value representing the mass of the control member to produce a control member acceleration-related signal. This acceleration-related signal is integrated twice to produce, respectively, a control member velocity-related signal and a control member position-related signal. These various signals are fed back to the servomechanism to provide a response which produces the correct "feel" at the control member for the flight condition under simulation.

摘要翻译： 飞行模拟系统设置有连接到伺服机构的手动操作的控制构件，该伺服机构响应于控制构件的手动输入并且根据模拟的飞行条件作出反应以向控制构件提供现实的反馈。 为此，串联地提供组合电路，分频电路和两个积分电路。 组合电路具有代表对控制构件的手动输入力的输入和来自飞行模拟计算机的另一个输入，其代表作用在受控构件上的模拟内力，分频电路将组合电路的输出除以表示 控制构件的质量以产生控制构件加速度相关信号。 该加速度相关信号被积分两次，分别产生控制构件速度相关信号和控制构件位置相关信号。 这些各种信号被反馈到伺服机构，以提供在模拟下为飞行状态在控制构件处产生正确“感觉”的响应。

公开(公告)号：US4358959A

公开(公告)日：1982-11-16

申请号：US140061

申请日：1980-04-14

申请人： Wilhelmus J. Lam ,  Luitzen De Vries

发明人： Wilhelmus J. Lam ,  Luitzen De Vries

IPC分类号： G01L5/22 ,  G01M5/00

CPC分类号： G01M5/005 ,  G01L5/223

摘要： A method of measuring the rigidity, the damping coefficient and the inertia of a system consisting of a damped, spring-supported mass, particularly, the manually operable member of the control-system of an aircraft or a flight simulator, in which method the measurement of the rigidity takes place by determining the relationship between the force exerted on the mass and the deviation of the mass from the state of equilibrium at a speed and an acceleration of substantially zero value and storing the relationship. The method is characterized by the initial step of forming three electric signals--namely, a force signal having a value directly proportional to the force exerted on the mass, an acceleration signal having a value directly proportional to the acceleration of the mass, and a velocity signal having a value directly proportional to the speed of the mass. Thereafter, the mass is moved in a manner such that it attains an acceleration and a velocity having values differing from substantially zero and the amplitude of the acceleration signal and of the velocity signal is adjusted such that by subtracting these two signals from the force signal substantially the same relationship to the deflection is obtained as in measuring the rigidity. A device for carrying out the method is also provided.

摘要翻译： 一种测量系统的刚性，阻尼系数和惯性的方法，该系统由阻尼的弹簧支撑的质量组成，特别是飞行器或飞行模拟器的控制系统的可手动操作的构件，其中测量 通过确定施加在质量上的力与质量与平衡状态的偏差之间的关系，速度和加速度基本上为零，并且存储该关系，发生刚度。 该方法的特征在于形成三个电信号的初始步骤 - 即具有与施加在质量上的力成正比的值的力信号，具有与质量加速度成正比的值的加速度信号，以及 速度信号具有与质量的速度成正比的值。 此后，质量块以使其达到加速度和具有不同于基本为零的值的速度的方式移动，并且调整加速度信号和速度信号的振幅，使得通过从力信号中大致减去这两个信号 与测量刚度一样获得与偏转相同的关系。 还提供了一种用于执行该方法的装置。