Control Console Handwheel With Haptic Inertia for Smooth Camera Motion

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Solution Overview

Problem

In 'fly-by-wire' camera systems, the lack of haptic feedback in handwheels results in camera operators having little feel for the weight of the camera system, leading to non-smooth movements, as previous solutions focused on removing human input rather than enhancing user experience through haptic feedback.

Innovation Solution

A digital handwheel system incorporating a motor and rotation detector, coupled with a controller to simulate higher rotational inertia, providing haptic feedback that makes the handwheel feel heavier than it actually is, using a closed-loop control system to match the handwheel's rotation with a remotely located motor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a fly-by-wire system with remote motor control is used, then the system weight is reduced and automation is improved, but the operator loses haptic feedback and feel for the camera weight

Engineering Contradiction:
Improveremote motor controlVSAvoidhaptic feedback
Core Design Contradiction:
Extent of automationVSEase of operation

Solution Approach 1:

The patent applies haptic feedback through a force feedback mechanism that provides resistance torque to the handwheel, simulating the weight and inertia of the camera system. The controller receives input from the handwheel and generates counter-torque proportional to the handwheel's acceleration, giving the operator tactile feedback about camera movements while maintaining remote electronic control.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent introduces an intermediary force feedback mechanism between the operator and the remotely controlled camera. This intermediary system includes a force feedback generator and controller that mediate the interaction by providing simulated physical sensations, allowing the operator to feel camera weight without direct mechanical connection.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the handwheel mass is increased to provide rotational inertia, then smooth movement is improved, but the device complexity and weight increase

Engineering Contradiction:
Improvesmooth movementVSAvoidhandwheel mass
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical solution of increasing handwheel mass with an electronic control system. Instead of adding physical mass to provide rotational inertia, the system uses a controller and force feedback mechanism to generate simulated inertia through electronic control of motor torque, thereby achieving smooth movement without increasing mechanical complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the parameter of rotational inertia from a fixed mechanical property to a controllable electronic parameter. By adjusting the force feedback gain and control algorithm, the system can dynamically adjust the simulated rotational inertia to achieve desired smoothness characteristics without being constrained by physical mass limitations.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution allows camera operators to feel the weight of the camera system, improving the smoothness and control of remote camera movements by simulating higher rotational inertia, enhancing the user experience and control precision.

Implementation Method 1

a haptic feedback system can be used in a lightweight handwheel system to give the handwheel a simulated rotational inertia

Methodology Applied
Scientific EffectHaptic feedback:

Implementation Method 2

simulate a rotational inertia of the handwheel that is different from the handwheel's actual rotational inertia

Methodology Applied
Scientific EffectRotational inertia simulation: Inertia

Implementation Method 3

a rotation detector configured to detect a rotation of the handwheel

Methodology Applied
Scientific EffectRotation detection:

Implementation Method 4

a motor having a rotor; a handwheel coupled with the rotor

Methodology Applied
Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Data Source

PatentUS11977685B2Handwheels and associated control consoles
Publication Date: 2024.05.07 NODAL FILM SYST LLC
  • US11977685B2 patent drawing
  • US11977685B2 patent drawing
  • US11977685B2 patent drawing

AI summary

Handwheel systems, including control consoles incorporating handwheels of the inventive subject matter, are described in this application. Handwheels described in this application can be used to control remotely located motors, especially those configured to control camera movements. To make it easier for camera operators to control remotely located motors using handwheels, those handwheels can be incorporated into a control console. Control consoles of the inventive subject matter can include several dials, toggle buttons, a display, and a variety of different inputs and outputs.