How can we improve motor control for our robotic television camera positioners?

In summary, Horngroup believes that the motor control issue is a "reinventing the wheel" problem and they will seek help from Maxon.
  • #1
horngroup
2
0
We are many years out of school. We are building robotic positioners for television cameras. Our experience in the mechanical design is extensive. We are seeking direction in motor control. The motors which we would like to try are flat pack brushless dc motors with 5 wire on board control. The manufacturer can supply with an input which causes rotation in one direction from 0-5v and reverses from 5-10v. We use a two axis joystick as we rotate horizontally and vertically. We have trouble with our control at center rest of the joystick, as we need a "dead" spot in the center to insure 0 speed. We need to go from a "creep" speed to about 30-40 deg/sec. We would think that with allthe robotics out there this is reinventing the wheel. Any help out there?
Horngroup
 
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  • #2
horngroup said:
We are many years out of school. We are building robotic positioners for television cameras. Our experience in the mechanical design is extensive. We are seeking direction in motor control. The motors which we would like to try are flat pack brushless dc motors with 5 wire on board control. The manufacturer can supply with an input which causes rotation in one direction from 0-5v and reverses from 5-10v. We use a two axis joystick as we rotate horizontally and vertically. We have trouble with our control at center rest of the joystick, as we need a "dead" spot in the center to insure 0 speed. We need to go from a "creep" speed to about 30-40 deg/sec. We would think that with allthe robotics out there this is reinventing the wheel. Any help out there?
Horngroup

So zero rotation velocity is achieved around 5V? The manufacturer should have some built-in hysteresis around this center voltage, so that you get the dead spot that you want. Something like 100mV hysteresis or so. Or basically a 100mV dead zone around 5V that gives zero rotational velocity. Can they give that to you?
 
  • #3
Thanks for the reply. We'll check with the motor people (Maxon)
 

1. What is a joystick for motor control?

A joystick for motor control is a device used to control the movement of a motor, typically in a robotic or industrial setting. It consists of a lever or handle that can be moved in different directions to send signals to the motor.

2. How does a joystick for motor control work?

A joystick for motor control works by sending electrical signals to the motor based on the movement of the lever or handle. These signals are interpreted by the motor's controller, which then adjusts the motor's speed and direction accordingly.

3. What types of motors can be controlled with a joystick?

A joystick for motor control can be used to control a variety of motors, including DC motors, stepper motors, and servo motors. The type of motor that can be controlled will depend on the specific joystick and its compatibility with different motor types.

4. What are the advantages of using a joystick for motor control?

One advantage of using a joystick for motor control is its intuitive and easy-to-use interface, making it accessible for users with varying levels of technical expertise. Additionally, a joystick allows for precise and proportional control of a motor's movement, making it useful for tasks that require precise positioning.

5. How do I choose the right joystick for my motor control needs?

When choosing a joystick for motor control, consider the type of motor you need to control, the range of motion and sensitivity required, and any additional features such as buttons or switches. It's also important to ensure compatibility between the joystick and your motor's controller.

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