Pulse-Rate Modifier for High-Speed Motor Controller
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Solution Overview
Problem
High-speed drive motors in motor-vehicle accessories face noise fluctuations due to load changes, which exceed the processing capabilities of commercially available controllers, leading to system malfunctions.
Innovation Solution
A pulse-rate modifier is introduced between the drive motor sensor and controller to adjust the pulse rate within a range processable by the controller, using electronic components like frequency dividers or software controllers to modify the pulse rate, ensuring stable operation across varying loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If high-speed drive motors are used to meet size and weight requirements, then the component size and weight are reduced, but the pulse rate exceeds the processing capability of commercially available controllers
Solution Approach 1:
A pulse-rate modifier is introduced as an intermediary component between the sensor and the controller. This modifier adjusts the pulse rate from the sensor to match the processing capabilities of the controller, enabling the system to use high-speed motors without overwhelming the controller's processing capacity.
2Weight of moving object
If high motor speeds are used to generate necessary power in small motors, then size and weight requirements are met, but noise fluctuations increase due to load variations
Solution Approach 1:
The system uses sensor feedback to continuously monitor motor speed and load conditions. The pulse-rate modifier processes this feedback information to adjust control signals, enabling the controller to compensate for load variations and reduce noise fluctuations caused by changing operating conditions.
3Weight of moving object
If small drive motors are used to reduce weight, then weight requirements are met, but the motors must operate at high speeds which amplifies noise from load fluctuations
Solution Approach 1:
The system changes the parameter of pulse rate through the pulse-rate modifier. By adjusting the pulse rate to match controller processing capabilities while maintaining accurate speed regulation, the system enables small high-speed motors to operate reliably without excessive noise amplification from load fluctuations.
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 for stable regulation of high-speed drive motors, preventing system failures by ensuring the pulse rate remains within the processing limits of commercially available controllers, even under high load conditions, thus maintaining operational integrity.
Implementation Method 1
This may for example be a Hall effect sensor
Data Source
AI summary
A drive for a motor-vehicle accessory has a drive motor, a controller that regulates the drive motor, and a sensor associated with the drive motor and that measures the motor speed of the drive motor and transmits to the controller a signal having a pulse rate corresponding to the motor speed. A pulse-rate modifier between the sensor of the drive motor and the controller serves to modify the pulse rate received from the drive motor in such a way that this rate is within a range of the pulse rate processable by the controller and to transmit a modified value of the pulse rate to the controller.