Predetermined Motion Time Systems
PMTS are techniques used to establish time standards for manual work by analyzing the basic human motions required to perform a task and assigning predetermined time values to these motions.
PMTS Method
Select the predetermined time system you want to use:
MTM-1 (Methods-Time Measurement)
MTM-1 is the most detailed MTM system, analyzing work into basic motions with time values in TMUs (Time Measurement Units, where 1 TMU = 0.00001 hour = 0.036 seconds).
| Motion | Description | Distance/Parameter | TMUs | Action |
|---|---|---|---|---|
| 0 |
Result
Total TMUs:
Standard Time: seconds
1 TMU = 0.036 seconds | 27.8 TMU = 1 second | 100,000 TMU = 1 hour
MTM-2 (Second Generation MTM)
MTM-2 is a simplified version of MTM-1 with fewer categories, suitable for less detailed analysis. It uses time values in TMUs.
| Motion | Description | Distance/Parameter | TMUs | Action |
|---|---|---|---|---|
| 0 |
Result
Total TMUs:
Standard Time: seconds
1 TMU = 0.036 seconds | 27.8 TMU = 1 second | 100,000 TMU = 1 hour
MTM-UAS (Universal Analyzing System)
MTM-UAS is a simplified MTM system for analyzing work cycles with less detail than MTM-1 but more than MTM-2.
| Activity | Description | Distance/Parameter | TMUs | Action |
|---|---|---|---|---|
| 0 |
Result
Total TMUs:
Standard Time: seconds
1 TMU = 0.036 seconds | 27.8 TMU = 1 second | 100,000 TMU = 1 hour
MOST (Maynard Operation Sequence Technique)
MOST is a higher-level PMTS that analyzes work using standardized sequence models (General Move, Controlled Move, Tool Use).
| Parameter | Value | TMUs |
|---|
Result
Total TMUs:
Standard Time: seconds
1 TMU = 0.036 seconds | 27.8 TMU = 1 second | 100,000 TMU = 1 hour
MODAPTS (Modular Arrangement of Predetermined Time Standards)
MODAPTS is a simplified PMTS where 1 MOD = 0.129 seconds. Body parts are assigned MOD values based on movement.
| Body Part | Motion | Distance/Parameter | MODs | Action |
|---|---|---|---|---|
| 0 |
Result
Total MODs:
Standard Time: seconds
1 MOD = 0.129 seconds | 7.75 MOD = 1 second
Practical Examples
MTM-1 Example
Reach 15 cm to object in fixed location: Reach Case A, 15 cm = 10.6 TMU
Grasp object: Grasp Case 1 = 2.0 TMU
Move object 20 cm to new location: Move Case B, 20 cm = 12.9 TMU
Total = 25.5 TMU (0.92 seconds)
MTM-2 Example
Get small object in easy location: Get A = 6 TMU
Put object to approximate location: Put B = 10 TMU
Total = 16 TMU (0.58 seconds)
MODAPTS Example
Move hand 15 cm: M3 = 3 MOD (0.39 seconds)
Grasp object: G1 = 1 MOD (0.13 seconds)
Total = 4 MOD (0.52 seconds)