Active Vibration Insulator Bad-Roads Processor Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Active vibration insulators face the risk of electromagnetic actuators and controllers breaking down when vehicles travel on bad roads due to overcurrents caused by changing inductance during vehicle vibrations, leading to energy consumption and mileage deterioration.
Innovation Solution
An active vibration insulator with a bad-roads processor that stops and resumes vibrating-forces generation control based on detected road conditions, using cyclic pulsating signals to prevent overcurrents by controlling actuating voltages to zero or a predetermined voltage, and employing a vibrations-detection sensor to accurately judge road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the active engine mount is driven to reduce vibrations transmitted from the engine, then the vibration transmission is inhibited, but the vehicle's mileage deteriorates due to energy consumption
Solution Approach 1:
The system applies partial action by selectively reducing actuating signals when road-induced vibrations are detected. Instead of continuously operating at full capacity, the active engine mount operates at reduced intensity when engine vibrations are less critical (during high road vibration conditions), thereby conserving energy while maintaining adequate vibration control when needed.
Solution Approach 2:
The system changes the operating parameters of the active engine mount based on detected road conditions. When high-frequency road vibrations are detected, the controller modifies the actuating signals to keep them low, effectively changing the operational state from active vibration cancellation to a low-energy standby mode, thus reducing power consumption.
2Use of energy by moving object
If the actuating signals are kept low during vehicle driving on bad roads to reduce energy consumption, then the mileage degradation is relieved, but overcurrents might flow in the electromagnetic actuator and controller due to changing inductance
Solution Approach 1:
The system introduces an intermediary detection mechanism (high-frequency vibration detector) that monitors road conditions and mediates the control signals to the active engine mount. This intermediary layer prevents direct application of high actuating signals during bad road conditions, thereby avoiding overcurrents while still maintaining system safety and reliability through controlled operation.
3Adaptability or versatility
If the plunger of the electromagnetic actuator reciprocates due to vehicle vibrations on bad roads, then the inductance of the electromagnetic actuator changes, but this causes overcurrents that may lead to breakdown
Solution Approach 1:
The system applies preliminary anti-action by detecting high-frequency road vibrations before they can cause harmful plunger reciprocation and inductance changes. By preemptively reducing or suppressing actuating signals during such conditions, the system prevents the plunger from reciprocating excessively, thereby avoiding the chain reaction of inductance changes and overcurrents that would lead to component breakdown.
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
Prevents overcurrents and potential breakdowns of electromagnetic actuators and controllers, effectively managing energy consumption and maintaining vehicle mileage by accurately distinguishing between bad and ordinary road conditions.
Implementation Method 1
an electromagnetic actuator for generating vibrating forces depending on electric-current supplies
Data Source
AI summary
An active vibration insulator includes an electromagnetic actuator, a controller, and a bad-roads processor. The electromagnetic actuator generates vibrating forces depending on electric-current supplies. The controller carries out vibrating-forces generation control. In the vibrating-forces generation control, the electric-current supplies are made variable so as to actively inhibit vibrations generated by an on-vehicle vibration generating source of a vehicle from transmitting to a specific part of the vehicle based on cyclic pulsating signals output from the on-vehicle vibration generating source. Thus, the controller lets the electromagnetic actuator generate the vibrating forces. The bad-roads processor stops the vibrating-forces generation control effected by the controller when the vehicle travels on bad roads.