Vehicle Operating Lever Mode Selection Control
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Solution Overview
Problem
Existing vehicle control devices for locomotives and traction vehicles lack operator-selectable position-dependent and time-dependent operating modes, limiting user-friendly control options and flexibility in driving situations.
Innovation Solution
Integration of a selection device with the control device allows operators to choose between position-dependent and time-dependent operating modes, generating control signals based on the selected mode and lever position, with an inactive period after mode changes to ensure correct lever positioning and continuous vehicle handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed control function is assigned to each deflection angle of the control lever, then the control device is simple and reliable, but the operating device lacks flexibility and cannot be adapted to different driving situations
Solution Approach 1:
The control device is designed to perform multiple functions by enabling both position-dependent and time-dependent operating modes through a single device structure. The control device can switch between different operating modes (position-dependent mode where control signals are generated based on lever position, and time-dependent mode where control signals are generated based on lever position and duration), allowing one device to serve multiple control purposes without requiring separate control systems for different operating scenarios.
Solution Approach 2:
The control device incorporates dynamic switching capability between different operating modes. The device can transition from a static position-dependent control mode to a dynamic time-dependent control mode based on operator selection and driving conditions. This dynamic adaptability allows the control system to adjust its behavior in real-time, changing how control signals are generated and interpreted based on the selected operating mode and current driving situation.
2Adaptability or versatility
If the operating mode is changed during vehicle operation, then the driver can adapt to different driving situations dynamically, but unintended vehicle behavior may occur due to incorrect lever positioning
Solution Approach 1:
Before the time-dependent operating mode becomes fully active after a mode change, the system implements a preliminary evaluation period during which the control device assesses whether the lever position is appropriate for the newly selected mode. During this evaluation period, the control device generates control signals based on both the new operating mode and the current lever position, allowing the driver to verify and correct lever positioning before the mode change takes full effect. This preliminary check prevents unintended vehicle behavior by ensuring the lever is correctly positioned for the selected operating mode.
3Speed
If the control device immediately activates after mode change, then the response is fast, but the driver cannot verify lever position correctness leading to potential errors
Solution Approach 1:
The control device implements a preliminary evaluation period after mode switching during which the driver can verify and correct lever positioning. This evaluation period occurs before the time-dependent operating mode fully activates, providing the driver with an opportunity to ensure correct lever position. The control device continuously evaluates control signals during this period based on the new operating mode, allowing the driver to make adjustments if needed before the mode change becomes irreversible.
Solution Approach 2:
The control device provides feedback to the driver during the evaluation period after mode switching. By continuously monitoring lever position and generating control signals based on the newly selected operating mode, the system gives the driver information about whether the current lever position is appropriate for the selected mode. This feedback mechanism allows the driver to verify positioning and make corrections if necessary, ensuring safe and intended vehicle operation before the mode change fully takes effect.
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
Enables operators to dynamically select the most suitable operating mode for driving situations without changing the lever or other parts, preventing unintended vehicle behavior and ensuring smooth control signal continuity.
Implementation Method 1
an angle measuring device for detecting the adjustment angle of the operating lever is connected to the control device
Data Source
Figure 1
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Figure 4
AI summary
The invention relates, inter alia, to an operating device (10) having an operating lever (20) for controlling a vehicle, particularly for controlling a locomotive engine or a traction vehicle. According to the invention, the operating device comprises a control device (50), which allows a position-dependent operating mode (BA=0) and a time-dependent operating mode (BA=1) of the operating device, and a selection device (60), which allows the operator to select the position-dependent operating mode or the time-dependent operating mode of the operating device, is connected to the control device. Depending on the selected operating mode and the respective position of the operating lever, the control device is suited to generate a control signal (ST) on the output side, which determines the respective operating command (BF) of the operating lever.