摘要:
A joystick includes a pivotably mounted X yoke connected to an X potentiometer and a pivotably mounted Y yoke connected to a Y potentiometer. To permit at least one additional degree of control, a platform member is pivotably mounted one of the yokes to support an additional control element such as a further potentiometer. The pivoting motion of the platform member with respect to the yoke element on which it is mounted is conveyed to the remaining yoke element. Both a platform member and the remaining yoke element pivot about respective axes that are perpendicular to the pivot axis of the yoke element on which the platform member is mounted.
摘要:
A hand control capable of suppressing tremors and other unwanted vibrations is disclosed which incorporates viscous damping in two degrees of freedom to mechanically filter the forces applied by the user's hand. To suppress pathological intention tremors, the damping characteristics are chosen so as to selectively reduce the amplitude of movements at or above about 3 Hertz. The hand control includes a chamber filled with a viscous fluid, a position-sensing actuator assembly and a damping element connected to the actuator and disposed within the chamber to suppress involuntary movements of the actuator. The volume of the chamber, size of the damping element and viscosity of the fluid are chosen to achieve a damping constant of about 2 to 20 lbf-sec/ft., preferably from about 5 to about 15 lbf-sec/ft. The viscous fluid is preferably a silicone oil having a viscosity of about 300,000 to about 900,000 cstokes.
摘要翻译:公开了一种能够抑制震动和其他不期望的振动的手控制,其包括两个自由度的粘性阻尼以机械地过滤由用户的手施加的力。 为了抑制病理意图震颤,选择阻尼特性,以选择性地降低大约3赫兹或更高的运动幅度。 手控制包括填充有粘性流体的腔室,位置感测致动器组件和连接到致动器并且设置在腔室内的阻尼元件,以抑制致动器的不自主运动。 选择室的体积,阻尼元件的尺寸和流体的粘度以实现约2至20lbf-sec / ft 2,优选约5至约15lbf / sec / ft 2的阻尼常数。 粘性流体优选为粘度为约30万至约900,000个碳原子的硅油。
摘要:
A mechanism for connecting and disconnecting return springs for multiple axis analog control sticks. The control stick, movable in two axes, can be fully spring centered along both axes, spring centered along one axis and frictionally positioned along the other axis, or freely frictionally positioned along both axes. Externally accessible pins are selectably operable to engage or disengage the centering springs to change control stick modes. Additionally, motion of the control stick in one or both axes may be substantially inhibited by the pins.
摘要:
A manually-operable joystick is mounted for universal pivoting motion as by means of spherical bearing and journal means and is biased toward a neutral position so as to return automatically thereto upon release of manual constraint.
摘要:
A control stick assembly has a crank coupling the control stick to the input shaft of one potentiometer and a bail coupling the control stick to the input shaft of the other potentiometer. There are no other connections between the control stick and the remainder of the assembly to bear loads exerted on the control stick. The bail furnishes mechanical stability to the control stick support because it is connected to the housing of the assembly at two places on either side of the control stick. This eliminates the cantilever effect of the control stick support without substantially increasing the number of parts or design complexity.
摘要:
In a control device of the "joystick" type in which movement of a single control lever is resolved into two orthogonal components, each component is represented by movement of one of a pair of pivoting members. Each such pivoting member has a respective coupling member mounted thereon for angular movement relative thereto about an axis perpendicular to the axis of the corresponding pivoting member. The two coupling members are connected to the control member so as to be restrained against relative translational movement.
摘要:
A device for coordinatedly controlling a plurality of variable resistors so as to achieve a desired combination of a plurality of variable resistors, said device comprising a first horizontal crosspiece having a lengthwise slot and a lateral plate perpendicular to the length of the crosspiece per se at each end thereof and second crosspiece having the similar slot and lateral plates the underside of which is partly on the same level as the underside of the first crosspiece when it is mounted on the second crosspiece, the two crosspieces being arranged crosswise and being moved relatively on a plane so that their movement moves a plurality of wipers so as to wipe the corresponding resistor elements.
摘要:
The stick of a joystick type control device is rigidly affixed to a carrier plate that extends normal to it. The plate is gimbal mounted on a fixed base and has four reaction receiving elements equidistant from the stick axis, arranged two along each gimbal axis, at opposite sides of the stick. Four springs react, all in the same direction, between the fixed base and the plate, one against each reaction receiving element. When the stick is in a normal position the springs exert equal forces.