Hi all,
I have a few questions regarding the development of a basic positional control system. I want to make a set of force feedback pedals using
windscreen wiper motors. The pedal will be mounted on an axle so it
pivots moves as I push it down. I am planning on using a
potentiometer to measure how far the pedal is pushed in (as a rotation
about the axle) and sample this signal with an A/D converter. This
digital information will be read in by a PC and a corresponding
feedback level generated based on some feedback parameters I will
implement within the control software. The signal will exit the PC
via a D/A converter before going through an amp and to the motor that
will generate a torque that will force the pedal back to the zero
position as I push it down.
I want to know if the approach outlined above is suitable for this application. I don't know much about servo or stepper motor systems so I really limited my thinking to this basic approach which was what we learnt at uni.
I also want to know what sort of power amplifier I should be using and where I can get somthing that is suitable. The 5V, low current output from the PC is hardly enough to drive the 12V high current motors, especially at stall, which is what these motors will be doing most of the time. Is a PWM amp the way to go or something else? Does anyone have any additional advice, links or whatever that would help me with this project.
Thanks and regards, Lyndon.
I have a few questions regarding the development of a basic positional control system. I want to make a set of force feedback pedals using
I want to know if the approach outlined above is suitable for this application. I don't know much about servo or stepper motor systems so I really limited my thinking to this basic approach which was what we learnt at uni.
I also want to know what sort of power amplifier I should be using and where I can get somthing that is suitable. The 5V, low current output from the PC is hardly enough to drive the 12V high current motors, especially at stall, which is what these motors will be doing most of the time. Is a PWM amp the way to go or something else? Does anyone have any additional advice, links or whatever that would help me with this project.
Thanks and regards, Lyndon.