Iconic Diagrams\Hydraulics\Motors\Basic Motors
Domains: Continuous. Size: 1-D. Kind: Iconic Diagrams (Hydraulics).
This model describes an ideal motor with an axial speed that is proportional to the input flow rate:
pa.phi = pb.phi = i * p_rot.omega;
i = D * c / (2*pi);
The torque is equal to:
p.T = i*(pa.p - pb.p);
The displacement is controllable by the input signal c. For a positive rotation of the driving axis the flow is:
|
c >= 1 c = 0 c <= -1 |
maximum flow from port 1 to port 2 zero flow maximum flow from port 2 to port 1 |
If the port pressure is smaller than the vapour pressure (p < p_vapour), the flow is zero. If the port pressure becomes larger than the vapour pressure the flow gradually grows to its normal value, until the atmospheric pressure (p = 0) is reached.
Ports |
Description |
pa pb p_rot |
inlet port (hydraulic) outlet port (hydraulic) axis (rotation) |
Causality |
|
fixed volume flow out pa fixed volume flow out pb fixed torque out p_rot |
|
Input |
|
c |
relative displacement |
Parameters |
|
D |
displacement per revolution [m3] |