Multi-Axis Electronic Joystick for Working Machine Control
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Solution Overview
Problem
Current joystick control systems for working machines require two joysticks to control the working arm and additional foot controls for machine movement, leading to a complex and non-intuitive control arrangement for operators.
Innovation Solution
A single electronic joystick with four or six axes of movement is used to control all functions associated with the working arm, and a second joystick is used to control the working machine's movement without the need for foot pedals, simplifying the control arrangement and freeing up space in the operator cab.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two joysticks and foot controls are used to control working arm and machine movement, then all functions can be controlled, but the control arrangement becomes complex and non-intuitive
Solution Approach 1:
The patent combines multiple control functions into a single joystick by integrating four independent axes of movement (laterally, longitudinally, vertically, and rotationally). Each axis controls a different function of the working arm, eliminating the need for separate joysticks and foot controls while maintaining comprehensive control capability
Solution Approach 2:
The single joystick is designed with multi-functionality to control all working arm functions through its four axes: lateral movement controls one function, longitudinal movement controls another, vertical movement controls a third function, and rotational movement controls a fourth function, making one device perform the work of multiple control mechanisms
2Ease of operation
If two joysticks are provided to control working arm functions, then complete control is achieved, but space in the operator cab is consumed
Solution Approach 1:
The patent merges the functionality of two separate joysticks into a single joystick unit. By integrating four axes of movement in one device, it achieves complete control capability while occupying significantly less space in the operator cab compared to two separate joysticks
3Adaptability or versatility
If foot pedals are used for machine movement control, then drive control is achieved, but the control arrangement becomes more complex
Solution Approach 1:
The patent integrates machine movement control functions into the single joystick by utilizing its rotational axis. This eliminates the need for separate foot pedals and their associated control mechanisms, reducing overall system complexity while maintaining full drive control capability
Solution Approach 2:
The patent replaces the mechanical foot pedal control system with an electronic joystick system. The rotational movement of the joystick generates electronic signals that control the drive arrangement, substituting a simpler electronic control mechanism for the more complex mechanical foot pedal arrangement
Data Source
AI summary
A joystick assembly for a working machine having a working arm includes a controller configured to control a plurality of machine functions, a first electronic joystick in communication with the controller, and actuators in communication with the controller. Each actuator is configured to actuate a function associated with the working arm. The first electronic joystick comprises four axes of movement, and the first electronic joystick is configured to transmit electronic signals to the controller in response to being displaced along an axis from a neutral position. The controller is configured to receive the electronic signals from the first electronic joystick, and to transmit an electrical signal to one or more actuators to actuate the actuators. The joystick assembly is configured such that the controller actuates a different actuator for controlling a different function associated with the working arm, dependent upon the axis of displacement of the first electronic joystick.