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Magnetic Pivot Drive Motor

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  • Magnetic Pivot Drive Motor

    Pivot Drive Motor.jpg
    Magnetic Pivot Drive Motor:
    The way the Pivot Drive Motor works is that it redirects some of the torque produced in the motor movement. There is torque that is developed in two places. The first one is in the permanent magnets that are mounted in the larger housing mounting plate. The second is into the electromagnet that is at the end of the hammer arm. As the torque is produced into the electromagnet it swings the electromagnet into the opposite direction that it would normally be directed without the arm. The arm swings the electromagnet that is mounted in the hammer arm over to the other side of the housing mounting plate. Some of the torque in the arm pushes on the pivot pin, but most of the torque is absorbed into the housing permanent mounting plate on the other side of the plate where the push came from in the first place. The absorbed torque into the mounting plate has the same direction of push on the mounting plate as the permanent magnet pushed on the electromagnet in the first place. The torque offset caused by the push from the mounting plate on one side of the plate along with the absorption of the movement of the electromagnet in the motor on the other side of the mounting plate causes movement in the same direction in the motor. The motor movement is only opposed by the smaller torque that is applied to the pivot pin.

    With the power from the rare earth magnets and electromagnets, this motor can produce large amount of push compared to the weight of the motor enabling the motor to have great performance.

    The bumpers in the motor are a safety precaution in order to prevent damage to both the permanent magnets and the electromagnets of the motor. The magnetic field of the electromagnet is turned on at just the right time in order to accelerate the swinging arm from one permanent magnet to the other permanent magnet. As the acceleration occurs, it creates the torque in both the permanent magnet and the electromagnet at the same time. The torque on the permanent magnet is active on the permanent magnet housing as soon as the power is turned on to the electromagnet. The torque is generated in the electromagnet at the same time, but the majority of the torque is transferred into angular momentum. This causes the hammer assembly to swing in an arc around the pivot point until the hammer rotates about 120 degrees where the power is turned on to create a stopping force on the electromagnet. As the majority of generated torque is used to stop the momentum in the arm from hitting the housing assembly. This force pushes the housing permanent magnet assembly. The electromagnet comes to a quick stop causing the permanent magnet plate to move in the same direction as the push on the arm in the first place. Since the power is still on the electromagnet, the arm accelerates to the other side of the housing permanent plate. So, this is a start of the same process that we have already discussed. The only difference is that the arm is moving in the opposite direction.

    The action at each side of the motor is the same as the arm swings back and forth transferring it torque twice with each swing in order to change the direction of the torque in the arm into the same direction as the permanent magnets mounted into the housing assembly. The torque pushing on the pivot pin is the only torque that remains to resist the motors movement into the direction of the housing permanent magnet housing. As the hammer arm swings back and forth quickly, the device will not spin in a circle, but in a straight line like that of a cross country skier. The straightness of the line can be improved with some of the design options listed later on.

    Because the hammer action with the correct power switching in the motor does not allow the hammer arm to make physical contact with the permanent magnet housing, the torque is spread out over a longer period of time in the motor which will cause a much lower vibration level in the motor than if physical pounding was allowed to occur in the motor assembly.

    The weight on the hammer arm allows the arm and permanent magnet plate to produce more torque in the motor as it both accelerates the hammer arm and brakes (slows down to a stop) the hammer arm in the motor. More torque produces more movement in the motor. There is a limit according to the strength of the magnets in the motor assembly. More weight in the hammer arm means you can produce a motor with the same speed with slower arm speeds. Slower arm speeds reduces the physical torques of parts on the hammer arm assembly from breaking apart.

    There are different ways to change the timing of power to the electromagnet as it comes into the stopping position with the permanent magnet. Also, for the time the power is on to accelerate the electromagnet away from the permanent magnet. The drawing does not show how the motor start up occurs, but there are many ways to make this happen. Some of these design improvements could be physical changes to the design and some could be electrical changes or some of them could be software changes in the system design.

    The speed of the motor can be adjusted as simply as changing the voltage going to the electromagnet. Many other power and control circuits can be designed for this new motor technology.

    Since the electromagnet moves fast, cooling of it could easily be done by allowing airflow in the motor.

    The power of this motor when properly designed can easily have a lot more torque in creating movement in the motor than the weight of the motor when using the rare earth magnets that are available today. This means vertical lift would be possible along with other directions. The advantages of this type of motor movement are endless. By placing these motors in different places with different torque directions in vehicles of all types could totally change the way we travel today.

    If two motors are stacked on each other, they can be designed to be mounted in the same plain and direction. Then the movements can be designed so that when the first motor is starting its acceleration from the right side of the motor, the acceleration in the second motor is coming from the left side of the motor. This would smoothen out the vibration in the device it is operating. Even better yet, if two more motors are stacked in the same plain and direction, then the third motor can be one half way across from moving from left to right of the first motor. The fourth motor can be one half way across from moving from right to left of the first motor. This would make the vibration even smaller. With a fast enough motor speed of the four motors, along with the fact that no actual parts hit each other in the operation of the motors, the operation should be pretty smooth.

    Since the movement of this motor used in a vehicle is not dependent on the surface it is moving on, the vehicle will not have as many environmental conditions to prevent it from providing superior performance over current vehicles.

    What are your thoughts about this motor?