6 Degrees of freedom controller with capability of tactile feedback

• US 5,589,828 A
• Filed: 03/05/1992
• Issued: 12/31/1996
• Est. Priority Date: 03/05/1992
• Status: Expired due to Term

• Current Assignee: Anascape, Ltd.
• Original Assignee: Brad Alan Armstrong
• Inventors: Armstrong, Brad A.
• Primary Examiner(s): Peng, John K.
• Assistant Examiner(s): HILL, ANDREW M
• Application Number:
  US07/847,619
• Time in Patent Office: 1,762 Days
• Field of Search: 341/20, 341/21, 345/156, 345/157, 345/161, 318/145, 200/6 A, 74/471 XY
• US Class Current: 341/20
• CPC Class Codes: G05G 2009/04755 Magnetic sensor, e.g. hall generator, pick-up coil
• CPC Class Codes: G05G 2009/04766 providing feel, e.g. indexing means, means to create counterforce
• CPC Class Codes: G05G 9/04737 with six degrees of freedom
• CPC Class Codes: G06F 3/0213 Arrangements providing an integrated pointing device in a keyboard, e.g. trackball, mini-joystick for pointing devices integrated in a laptop computer G06F1/169; joysticks G05G9/047; constructional details of pointing devices G06F3/033
• CPC Class Codes: G06F 3/03548 Sliders, in which the moving part moves in a plane
• CPC Class Codes: G06F 3/03549 Trackballs G06F3/03541 takes precedence
• CPC Class Codes: H01H 2003/008 with a haptic or a tactile feedback controlled by electrical means, e.g. a motor or magnetofriction
• CPC Class Codes: H01H 2237/002 Bell crank
• CPC Class Codes: H01H 25/00 Switches with compound movement of handle or other operating part
• CPC Class Codes: H01H 25/002 having an operating member rectilinearly slidable in different directions
• CPC Class Codes: H01H 25/008 Operating part movable both angularly and rectilinearly, the rectilinear movement being perpendicular to the axis of angular movement
• CPC Class Codes: Y10T 74/20201 Control moves in two planes

Abstract

Described and shown is a six degree of freedom physical to electrical converter with capability of tactile feedback, specifically, a human hand operated input controller with the capability of vibration feedback in the handle. Two embodiments, each capable of translating complex three dimensional linear and rotational forces into their constituent orthogonal vectors are described and shown. Also described and shown are various different sensor types which can be implemented in the embodiments. The embodiments have physical space between sensors and actuators maintained by resilient means, enabling tactile feedback (vibration) to be induced directly in the handle without erroneously activating sensors.

Claims

1. A hand-operated controller allowing six degrees of freedom of hand input force into a single handle for conversion of the hand input force into electrical output signals, said controller comprising;

stationary base means including a first portion of said base means and a horizontally positioned second portion of said base means for supporting

sliding-plate-linear-conversion means for moving within a horizontal first linear degree of freedom and a horizontal second linear degree of freedom of said six degrees of freedom and for actuating

linear sensor means for sensing positions of said sliding-plate-linear-conversion means within the horizontal first and second linear degrees of freedom and for producing electrical output signals related to sensed positions of said sliding-plate-linear-conversion means;

said sliding-plate-linear-conversion means sandwiched between said first portion of said base means and said horizontally positioned second portion of said base means and thereby restrained against upward and downward movement;

a shaft coupled to said sliding-plate-linear-conversion means to move with said sliding-plate-linear-conversion means at least in the horizontal first and second linear degrees of freedom;

said shaft having

said single handle on an upper end of said shaft to allow all of said six degrees of freedom of hand input force to be applied to said controller through said single handle;

means for transferring horizontal linear hand input force applied to said single handle directionally correspondingly to the horizontal first and second linear degrees of freedom into directionally corresponding horizontal linear force against said shaft, whereby with said shaft being coupled at least in the horizontal first and second linear degrees of freedom to said sliding-plate-linear-conversion means, the shaft can transfer horizontal linear force applied to said single handle into said sliding-plate-linear-conversion means so as to move said sliding-plate-linear-conversion means in the horizontal first and second linear degrees of freedom in a substantially identical direction as the direction of the horizontal linear hand input force applied to said single handle;

means for allowing said single handle to be rotatable in three separate degrees of rotational freedom about a single point defined by an intersection of three mutually perpendicular axes within said single handle, whereby three degrees of rotational freedom of said six degrees of freedom are provided;

rotational force sensor means for sensing rotational force against said single handle in any of said three degrees of rotational freedom, and for producing electrical output signals related to sensed rotational force against said single handle,

means for allowing said single handle to be moved vertically upward and downward in a third linear degree of freedom of said six degrees of freedom by vertical hand input force against said single handle,

up and down movement sensor means for sensing upward and downward movement of said single handle in said third linear degree of freedom and for producing electrical output signals related to sensed upward and downward movement of said single handle.

2. A controller in accordance with claim 1 further including

spatial isolation means in association with said linear sensor means, said rotational force sensor means and said up and down movement sensor means.

3. A controller in accordance with claim 2 wherein said linear sensor means is more narrowly defined as

an independent first sensor and an independent second sensor each associated with the horizontal first linear degree of freedom;

and further,

an independent third sensor and an independent fourth sensor each associated with the horizontal second linear degree of freedom;

the independent first through fourth sensors each being separate and distinct from one another.

4. A controller in accordance with claim 3 wherein said rotational force sensor means is more narrowly defined as

six independent sensors each separate and distinct from one another, and each separate and distinct from said independent first through fourth sensors.

5. A controller in accordance with claim 4 wherein said up and down movement sensor means is more narrowly defined as

two independent sensors each separate and distinct from one another, separate and distinct from said six independent sensors, and separate and distinct from said independent first through fourth sensors.

6. A controller in accordance with claim 5 wherein said independent first through fourth sensors, and said six independent sensors and said two independent sensors all jointly comprise twelve sensors each being separate and distinct from one another;

each separate and distinct sensor of said twelve sensors is an electricity manipulating sensor each capable of manipulating electricity independently of the other sensors of said twelve sensors.

7. A controller in accordance with claim 6 wherein said twelve sensors are each electrical contact switches.

8. A controller in accordance with claim 7 wherein each switch of the twelve electrical contact switches is an open switch closeable with force applied thereto.

9. A controller in accordance with claim 8 further including tactile feedback means for providing vibration which can be felt through said single handle.

10. A hand-operated controller allowing six degrees of freedom of hand inputs for conversion of the hand inputs into twelve orthogonal outputs each dependant upon hand inputs, with the twelve orthogonal outputs each represented by an electrical output signal each produced by one of twelve separate sensors attached to said controller, with each of said sensors associated one said sensor per each orthogonal output of said twelve orthogonal outputs, said controller comprising;

a stationary base for supporting

sliding-plate-linear-conversion means movably sandwiched between a first portion and a second portion of said base;

said sliding-plate-linear-conversion means movable in a first linear degree of freedom and in a second linear degree of freedom of said six degrees of freedom for actuating

a first four sensors of said twelve separate sensors;

said first four sensors mounted within said base;

said first four sensors including a move-forward sensor associated with

a first output of said twelve orthogonal outputs;

said first four sensors including a move-back sensor associated with

a second output of said twelve orthogonal outputs;

said first four sensors including a move-right sensor associated with

a third output of said twelve orthogonal outputs;

said first four sensors including a move-left sensor associated with

a fourth output of said twelve orthogonal outputs;

said sliding-plate-linear-conversion means sandwiched between said first portion and said second portion of said base so that said sliding-plate-linear-conversion means is moveable exclusively horizontally to and from actuation of each of the sensors of said first four sensors;

a shaft;

said shaft having a lower end and an upper end;

the lower end of said shaft coupled to said sliding-plate-linear-conversion means so that said shaft is coupled with said sliding-plate-linear-conversion means to move in the first and second linear degrees of freedom so that linear horizontal movements of said shaft can be translated into linear horizontal movements of said sliding-plate-linear-conversion means to move said sliding-plate-linear-conversion means to and from actuation of each of the sensors of said first four sensors;

a handle on said upper end of said shaft, said handle manipulable by human hand inputs for applying all of said six degrees of freedom of hand inputs into said controller;

means for allowing said handle to be rotatable in three degrees of rotational freedom about a single point defined by an intersection of three mutually perpendicular axes within said handle, whereby three degrees of rotational freedom of said six degrees of freedom are provided;

a second four sensors of said twelve separate sensors, said second four sensors mounted within said handle and associated with at least two rotational degrees of freedom of said three degrees of rotational freedom;

said second four sensors including a turn-up sensor associated with

a fifth output of said twelve orthogonal outputs;

said second four sensors including a turn-down sensor associated with

a sixth output of said twelve orthogonal outputs;

said second four sensors including a turn clockwise sensor associated with

a seventh output of said twelve orthogonal outputs;

said second four sensors including a turn counter-clockwise sensor associated with

an eighth output of said twelve orthogonal outputs;

said controller including a turn-right sensor associated with

a ninth output of said twelve orthogonal outputs;

said ninth output associated with a third degree of rotational freedom separate from said two rotational degrees of freedom;

said controller including a turn-left sensor associated with

a tenth output of said twelve orthogonal outputs;

said tenth output associated with said third degree of rotational freedom;

means for allowing said handle to be moved vertically up and down in a third linear degree of freedom separate from the first and second linear degrees of freedom of said six degrees of freedom;

said controller including a move down sensor and a move up sensor each associated with said third linear degree of freedom of said six degrees of freedom;

said move down sensor associated with an eleventh output of said twelve orthogonal outputs;

said move up sensor associated with a twelfth output of said twelve orthogonal outputs.

11. A controller in accordance with claim 10 wherein each sensor of said twelve separate sensors is an electrical contact switch with the contacts in an open position and being closeable with force.

12. A controller in accordance with claim 11 further including

spatial isolation means in association with each switch of the twelve switches.

13. A controller in accordance with claim 12 further including tactile feedback means for providing vibration which can be felt through said handle.

14. A hand-operated controller allowing six bi-directional degrees of freedom of hand input force into a single handle, said controller comprising;

said single handle movably supported by

means for converting hand input force applied in any direction to said single handle into movement of said single handle in a direction substantially identical to the hand input force direction and relative to

a stationary support base of said controller;

whereby linear hand input force against said single handle absent rotational force can move said single handle purely linearly, and rotational hand input force against said single handle absent linear force can move said single handle purely rotationally;

linear sensor means for sensing only linear movement of said single handle and producing electrical output signals indicative of linear hand input force direction against said single handle;

rotational sensor means for sensing only rotational movement of said single handle and producing electrical output signals indicative of rotational hand input force direction against said single handle.

15. An improved hand operated controller of the type allowing six degrees of bi-directional freedom of hand inputs for conversion of the hand inputs into electrical outputs;

wherein the improvement comprises the use of a separate and distinct sensor for each direction of each bi-directional degree of freedom of said six degrees of freedom;

whereby twelve separate and distinct sensors are utilized for converting hand inputs into said electrical outputs.

16. An improved six degree of freedom controller in accordance with claim 15 wherein each sensor of the twelve sensors is an electrical contact switch.

17. An improved six degree of freedom controller in accordance with claim 16 further including tactile feedback means for providing vibration to be felt by a hand operating said controller.

18. A controller in accordance with claim 17 further including

spatial isolation means in association with each switch of the twelve switches.