What are parallel robots?
Parallel robots are closed-loop robots whose moving and fixed platforms are connected by at least two independent kinematic chains, and whose mechanisms have two or more degrees of freedom and are driven in parallel.
Parallel robots are characterized by no cumulative error and high precision; the drive unit can be placed on or near a fixed platform, so the moving parts are lightweight, have high speed, and good dynamic response.
Characteristics of parallel robots
1. No cumulative error, high accuracy;
2. The drive unit can be placed on or near a fixed platform, which makes the moving parts lightweight, high-speed, and with good dynamic response;
3. Compact structure, high rigidity, and large load-bearing capacity;
4. Completely symmetrical parallel mechanisms have good isotropy;
5. Small workspace;
Based on these characteristics, parallel robots have been widely used in fields that require high rigidity, high precision, or large loads but do not require a large workspace.
What is a serial robot?
A serial robot is an open kinematic chain robot, which consists of a series of links connected by rotary or locating joints. Actuators are used to drive the movement of each joint, thereby causing the relative movement of the links and bringing the robot's end effector to a suitable position.
Characteristics of serial robots:
1. A speed reducer is required;
2. Different drive power, different motor models;
3. The motor is located in the moving part and has a large moment of inertia;
4. The forward solution is simple, while the inverse solution is complex.
Parallel robots and serial robots have become two driving forces in the field of industrial robots, jointly propelling the development of industrial robots forward.
