Motor-Driven Traveling Device Brake Control Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Motor-driven traveling devices equipped with electromagnetic brakes face safety issues when releasing the brake, as they can unexpectedly move due to residual motor rotation, posing a risk to users, especially when on slopes, due to the lack of effective control over motor and brake interaction.
Innovation Solution
A motor-driven traveling device with a brake control circuit that manages the interaction between the motor and electromagnetic brake through a multistage brake release switch, allowing controlled brake release by disconnecting the motor power supply and energizing the electromagnetic brake, thereby preventing unexpected movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electromagnetic brake is energized to release the brake, then the vehicle body can be moved by pushing, but the motor may rotate by battery residual amount causing unexpected movement
Solution Approach 1:
The brake control circuit performs preliminary action by detecting battery residual quantity before allowing brake release. When the battery has sufficient residual quantity to potentially cause dangerous motor rotation, the circuit prevents electromagnetic brake release in advance, thereby avoiding unexpected vehicle movement while still allowing manual pushing when it is safe
2Ease of operation
If the vehicle body is stopped on a slope and the electromagnetic brake is released, then the vehicle can be pushed, but the vehicle body may move toward the person pressing the switch
Solution Approach 1:
The brake control circuit incorporates feedback by continuously monitoring battery residual quantity and using this information to control whether the electromagnetic brake can be released. This feedback mechanism ensures that brake release is only permitted when the battery has sufficient power to control the motor, preventing situations where the vehicle might move toward the user on a slope due to uncontrolled motor rotation
3Reliability
If the electromagnetic brake is used for safety when the motor is stopped, then the vehicle body is secured, but the user cannot manually move the vehicle when needed
Solution Approach 1:
The system dynamically adjusts its behavior based on battery residual quantity. When the battery has sufficient power, the electromagnetic brake can be released and the motor can control vehicle movement. When the battery is depleted, the system automatically prevents brake release to maintain safety. This dynamic adaptation allows the system to provide both safety when the motor is stopped and manual movability when needed
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 safe brake release by suppressing vehicle body movement, reducing the risk of accidents by allowing users to adjust braking force intuitively and preventing vehicle movement down slopes, ensuring user safety during manual operation.
Implementation Method 1
an electromagnetic brake which applies a brake when a power supply for driving is turned off
Implementation Method 2
a motor for travel driving that is capable of braking the vehicle body
Data Source
AI summary
The present invention provides a motor-driven traveling device including: a vehicle body; a motor for travel driving that is capable of braking the vehicle body as a short brake or a dynamic brake; an electromagnetic brake that brakes the vehicle body, separately from the motor; an operation switching circuit that switches between causing the motor to perform travel driving and causing the motor to perform braking; a brake release switch that receives an operation pertaining to brake releasing of the motor and the electromagnetic brake; and a brake control circuit that, while the brake release switch is operated, controls the motor and the electromagnetic brake in response to the operation on the brake release switch.