Camera Control Handwheel With Simulated Inertia Feedback
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Solution Overview
Problem
In fly-by-wire camera systems, the lack of haptic feedback results in a loss of the feeling of weight, leading to unsmooth camera movements, as the operator does not directly experience the weight of the camera system, which is crucial for smooth control.
Innovation Solution
A handwheel system with a motor and rotation detector provides haptic feedback by simulating higher rotational inertia, using a closed-loop control system to make the handwheel feel heavier than it actually is, incorporating a brushless DC motor and various encoders to detect and control the handwheel's rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fly-by-wire system with remote motor control is used, then the operator can control the camera from a distance, but the operator loses the feeling of weight and rotational inertia, resulting in unsmooth movements
Solution Approach 1:
The system implements a feedback mechanism where the rotation detector monitors handwheel movement and the controller simulates rotational inertia by adjusting motor torque in real-time. This creates haptic feedback that gives the operator the sensation of weight and inertia, resolving the information loss from remote control
Solution Approach 2:
The motor acts as an intermediary between the handwheel and the camera. It not only transmits motion but also provides haptic feedback through simulated inertia, serving as a mediator that bridges the gap between the operator and the remotely controlled camera
2Stability of the object's composition
If the handwheel mass is increased to provide rotational inertia, then smooth movement is achieved, but the system weight increases
Solution Approach 1:
The system replaces the mechanical solution of increasing handwheel mass with an electronic control solution. The motor and controller simulate rotational inertia through torque adjustment, eliminating the need for additional physical mass while maintaining movement smoothness
Solution Approach 2:
The system changes the parameter of rotational inertia from a fixed physical property (mass) to a controllable variable parameter. The controller dynamically adjusts motor torque to simulate different inertia levels, allowing smooth movement without increasing physical weight
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
The system restores the operator's sense of weight, enhancing the control experience by providing a simulated feeling of inertia, improving the smoothness of remote camera operations.
Implementation Method 1
a motor (e.g., a brushless DC motor)
Implementation Method 2
various encoders to detect and control the handwheel's rotation
Implementation Method 3
the controller is configured to operate a control system for the motor that uses the detected rotation of the handwheel to simulate a rotational inertia of the handwheel that is different from the handwheel's actual rotational inertia
Data Source
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.